CN113313315A - Agricultural product producing area wholesale market planning method and system based on GIS - Google Patents
Agricultural product producing area wholesale market planning method and system based on GIS Download PDFInfo
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Abstract
The invention discloses a method for planning a wholesale market of a production area of agricultural products based on a GIS (geographic information system), which comprises the following steps of: s1: collecting base data of agricultural product wholesale market site selection, analyzing specific indexes in each administrative region by taking county/county as a unit, generating a GIS thematic map, and screening out candidate sites of the agricultural product wholesale market; s2: on the basis of the candidate places, site selection calculation is carried out according to the yield of agricultural products, the distance of transportation and the like, and the optimal site selection of the wholesale market of the agricultural product production places is obtained; s3: confirming the market operation amount of the wholesale market of the agricultural product producing area; s4: estimating the scale of the market trading area; s5: confirming the annual fresh-keeping agricultural product operation amount, and estimating the scale of a refrigerator; s6: estimating the size of the logistic processing area.
Description
Technical Field
The invention relates to the field of geographic information processing, in particular to a method and a system for planning a wholesale market of agricultural product production places based on a GIS.
Background
The wholesale market of the agricultural product producing area is a bridge and a link for communicating the production and consumption of agricultural products, has obvious effects on the aspects of building an agricultural product producing and selling platform, promoting the development of agricultural industry, meeting urban and rural consumption demands and the like and driving the development of agricultural related industries, and the wholesale market planning of the agricultural product producing area is a key ring for producing area market construction. The reasonable planning can scientifically, economically, efficiently and safely realize the construction target of the agricultural product production area wholesale market and exert the logistics node function of the agricultural product production area wholesale market in the agricultural product circulation. However, the existing wholesale market of most agricultural products in production places has small scale, simple and crude facilities and low organization degree, and is not guided forcefully from the planning level, so that the driving function of the wholesale market of the production places on the agricultural industry is not fully exerted.
Therefore, the invention provides a method and a system for planning the wholesale market of agricultural product production places based on a GIS (geographic information system), which can more scientifically, efficiently and economically realize the construction target of the wholesale market of the agricultural product production places.
Disclosure of Invention
In order to realize the purpose of the invention, the following technical scheme is adopted for realizing the purpose:
a method for planning a wholesale market of a production area of agricultural products based on a GIS comprises the following steps:
s1: collecting base data of agricultural product wholesale market site selection, analyzing specific indexes in each administrative region by taking county/county as a unit, generating a GIS thematic map, and screening out candidate sites of the agricultural product wholesale market;
s2: on the basis of the candidate places, site selection calculation is carried out according to the yield of fresh agricultural products and the distance of transportation, and the optimal site selection of the wholesale market of the agricultural product production place is obtained;
s3: confirming the market operation volume of various fresh agricultural products in the wholesale market of the agricultural product producing area;
s4: estimating the scale of the market trading area;
s5: estimating the storage scale of a cold storage/cold storage room;
s6: estimating the size of the logistic processing area.
In the step S1, the GIS thematic map is based on a regional planning database and yield and distribution data of each fresh agricultural product production area, and a distribution yield data map layer of agricultural products, a planning map layer, a road map layer, a basic farmland map layer, a historical relic map layer, an ecological redline map layer and a disaster map layer are generated through GIS overlay analysis, and areas available for site selection are screened to remove areas obviously unsuitable for building the agricultural product wholesale market, and the remaining available site areas are candidate sites of the agricultural product production wholesale market.
In the method for planning the wholesale market of the agricultural product producing area based on the GIS, in the step S2, the specific objective function for determining the optimal address of the wholesale market of the agricultural product producing area according to the candidate location is as follows:
wherein TC is the transportation cost; n is the number of the supply places of the regional fresh agricultural products; ciA shipping rate (cost per unit distance of product shipping) for the ith supply to the market to be built; wiAmount of fresh produce to the i-th supply; diThe transport distance (kilometers) from the supply location to the market to be built. (X)0，Y0) Is the coordinate of the market to be built, (X)i，Yi) Is the coordinates of the i-th supply location,
is the coordinate value at which the objective function can take the minimum value. According to mathematical principles, let TC pair variable X0And Y0Has a partial derivative of 0;
the wholesale market of the to-be-built production place is in
Satisfy the requirement of
Obtaining:
solving the model by using iterative algorithm to obtain rectangular coordinate value
The nearest candidate site in step S1 is selected as the best site for the wholesale market of the origin.
The method for planning the wholesale market of the agricultural product producing area based on the GIS, wherein the step S2 comprises:
(1) calculating the yield of the agricultural products of each fresh agricultural product supply place: the calculation formula is as follows:
Wt＝(At-1+At-2+At-3+...+At-m)/m
in the formula, WtThe predicted value of the yield of the fresh agricultural products of the next year is obtained; m is the number of the year of the moving average; a. thet-1The actual value of the yield of the fresh agricultural products of the last year; a. thet-2，At-3And A andt-mactual values of the previous two years, the previous three years and up to the previous m years are respectively represented;
(2) calculating the minimum distance from a supply place of each fresh agricultural product to a market to be built by using a software GIS space analysis function, specifically, calculating the distance from each production area to the market to be built according to a road network map layer by taking basic geographic information data of each fresh agricultural product production area as a space basis, and replacing a straight line distance with the road network distance;
(3) investigating and collecting the freight rate per kilometer of each fresh agricultural product supply place;
(4) and (4) applying an iterative algorithm to minimize the sum of the product of the distance between the candidate market site selection position and each fresh agricultural product supply place and the flow rate and the transportation rate, obtaining the coordinate value of the optimal site, and selecting the candidate site closest to the candidate site in the step S1 as the optimal site of the wholesale market of the production place.
The method for planning the wholesale market of the agricultural product producing area based on the GIS comprises the following steps of S3:
wherein Ct is the annual market traffic of the fresh agricultural products in the market respectively;
n is n types of fresh agricultural products in a certain area;
Withe yield of each type of fresh agricultural products in a certain area;
Pithe proportion of each type of fresh agricultural products in a certain area in the market transaction of a producing area;
r is an adjustment coefficient.
The method for planning the agricultural product wholesale market based on the GIS comprises the step S4, wherein the step S4 is specifically to estimate the scale of a trading area in the agricultural product wholesale market, and the specific calculation formula is as follows:
in the formula:
at is the total area of the buildings of the wholesale market trading hall in the producing area;
n is total n types of fresh agricultural products;
r is the adjustment factor/reuse efficiency;
ai is the building area of a trading hall allocated for each ton of agricultural products;
ci is the annual market traffic of each type of agricultural product;
di is the number of days that the second type of produce was operated in the wholesale market.
The method for planning the wholesale market of the agricultural product producing area based on the GIS, wherein the step S5 is to estimate the size of a fresh agricultural product cold storage/cold storage room,
the calculation formula is as follows:
wherein S is the sum of the occupied areas of a refrigeration house/refrigeration room required by various agricultural products;
n is the type of fresh agricultural products needing to be stored in the cold storage house/cold storage room;
ci is the annual market traffic of each type of agricultural product;
di is the operation days of each type of agricultural products in market transaction;
Bithe multiple of the cold storage/refrigeration storage capacity and the daily menstruation volume is needed for each type of agricultural products;
ηithe volume utilization coefficient of each type of agricultural products in a refrigeration house/refrigeration room is shown;
ρicalculating the density of each type of agricultural product in the cold storage/cold storage room;
hithe net height of the cold storage/cold storage room of each type of agricultural product.
In the step S6, the circulation processing area is a primary processing service area for providing washing, grading, cutting, packaging, labeling and sub-packaging for the agricultural products, and the scale calculation formula is as follows:
wherein A is the area scale of the desired flow-through processing zone;
n is the type of the fresh agricultural products needing to be subjected to primary processing;
Vifor each type of agricultural productVolume occupied by weight;
Tiaverage turnover time for each type of agricultural product;
Lithe working amount of each type of agricultural products;
τithe ratio of the operation amount of each type of agricultural products in the processing circulation area to the total operation amount of each type of agricultural products is calculated;
r is the adjustment factor/reuse efficiency;
Hiis the volume per unit area that can hold a type i agricultural product.
A GIS-based agricultural product origin wholesale market planning assistance system for performing the planning method as claimed in one of the above, wherein: the auxiliary system comprises a data acquisition module, a GIS spatial database, a market site selection module, a market operation scale estimation module, a market trading area scale estimation module, a market refrigeration house/refrigeration house scale estimation module and a circulation processing area scale estimation module, wherein:
the data acquisition module is used for acquiring relevant data of market site selection and planning;
the GIS spatial database is used for storing GIS spatial data; the method comprises planning and controlling red lines, land utilization planning maps, traffic planning maps, landform maps and disaster maps;
the market site selection module is used for calculating the yield of fresh agricultural products, the transportation distance and iteration calculation and solving the optimal site of a wholesale market in a regional range;
the market operation scale estimation module is used for estimating the operation amount of a wholesale market in a production place according to the yield of the regional fresh agricultural products and the social and economic level;
the market trading area scale estimation module is used for estimating the scale of trading halls in the wholesale market of the production place;
the market refrigeration house/refrigeration house scale estimation module is used for estimating the scale of a refrigeration house/refrigeration house required by fresh agricultural products in a production area wholesale market;
the scale estimation module of the circulation processing area is used for estimating the scale of the primary processing service area and the matched circulation area in the wholesale market of the production place.
Drawings
FIG. 1 is a schematic diagram of a work flow of a GIS-based agricultural product production area wholesale market planning system;
fig. 2 is a schematic diagram of the associated structure of each module of the agricultural product producing area wholesale market planning system based on the GIS.
Detailed Description
The following detailed description of the present invention will be made with reference to the accompanying drawings 1-2.
As shown in fig. 1, the method for planning the wholesale market of the agricultural product producing area based on the GIS comprises the following steps:
s1: collecting base data of agricultural product wholesale market site selection, analyzing specific indexes in each administrative region by taking county/county as a unit, generating a GIS thematic map, and screening out candidate sites of the agricultural product wholesale market;
s2: on the basis of the candidate places, site selection calculation is carried out according to the yield of fresh agricultural products, the distance of transportation and the like, and the optimal site selection of the wholesale market of the agricultural product production places is obtained;
s3: confirming the market operation volume of various fresh agricultural products in the wholesale market of the agricultural product producing area;
s4: estimating the scale of the market trading area;
s5: estimating the storage scale of a cold storage/cold storage room;
s6: estimating the size of the logistic processing area.
In step S1, the GIS thematic map is generated by a GIS overlay analysis based on a regional planning database and yield and distribution data of each fresh agricultural product production area, and then a distribution yield data map layer of agricultural products, a map layer for planning, a road map layer, a basic farmland map layer, a historical relic map layer, an ecological red line map layer, and a disaster map layer are generated, and an area available for site selection is screened to remove areas obviously unsuitable for building a wholesale market of agricultural products, for example, the fresh agricultural products have too low yield and too far away from a traffic trunk road, are located in the range of ecological protection red lines and basic farmland red lines, have risks of destroying historical relics, areas prone to natural disasters, and the remaining available site areas are candidate sites of the wholesale market of agricultural products production areas.
In step S2, the method for determining the wholesale market of the agricultural product production area according to the candidate location is a logistics cost minimization method. The logistics cost minimization method can be used for solving the problem of site selection of logistics facilities. The site selection problem of the wholesale market in the production area is the logistics problem of arranging a new market to the existing production areas of the fresh agricultural products, so that the logistics cost of all the production areas is the lowest, and related factors comprise the yield, the transportation distance and the transportation rate of the fresh agricultural products in each production area. The specific objective function is as follows:
wherein TC is the transportation cost; n is the number of the supply places of the regional fresh agricultural products; ciA shipping rate (cost per unit distance of product shipping) for the ith supply to the market to be built; wiAmount of fresh produce to the i-th supply; diThe transport distance (kilometers) from the supply location to the market to be built. (X)0，Y0) Is the coordinate of the market to be built, (X)i，Yi) Is the coordinates of the i-th supply location,
is the coordinate value at which the objective function can take the minimum value. According to mathematical principles, let TC pair variable X0And Y0The partial derivative of (c) is 0. Even if the wholesale market of the to-be-built production place is in
Satisfy the requirement of
Obtaining:
solving the model by using iterative algorithm to obtain rectangular coordinate value
The nearest candidate site in step S1 is selected as the best site for the wholesale market of the origin.
The specific calculation process comprises the steps of firstly obtaining average fresh agricultural product yield, coordinate data and transportation rate of each fresh agricultural product supply place in a region in the last m years, then substituting the average fresh agricultural product yield, the coordinate data and the transportation rate into a logistics cost minimum method model, and obtaining the optimal site selection through an iterative algorithm.
(1) Calculating the yield of the agricultural products of each fresh agricultural product supply place: calculating the average agricultural product yield of each supply place by adopting a simple moving average method, wherein the calculation formula is as follows:
Wt＝(At-1+At-2+At-3+...+At-m)/m
in the formula, WtThe predicted value (ton) of the yield of the fresh agricultural products of the next year is obtained; m is the number of the year of the moving average; a. thet-1Is the actual value (ton) of the yield of fresh agricultural products in the last year; a. thet-2，At-3And A andt-mrespectively represent the actual values (tons), W, of the previous two years, the previous three years and the previous m yearstIs W in the formula (1)i。
(2) And calculating the minimum distance from each fresh agricultural product supply place to the market to be built by using a software GIS space analysis function. Specifically, the method comprises the steps of taking basic geographic information data of each fresh agricultural product producing area as a spatial basis, calculating the distance between each producing area and a market to be built according to a road network map layer, and replacing a straight line distance with the road network distance;
(3) investigating and collecting the freight rate per kilometer of each fresh agricultural product supply place;
(4) and (4) applying an iterative algorithm to minimize the sum of the product of the distance between the candidate market site selection position and each fresh agricultural product supply place and the flow rate and the transportation rate, obtaining the coordinate value of the optimal site, and selecting the candidate site closest to the candidate site in the step S1 as the optimal site of the wholesale market of the production place.
More specifically, the step S3 is specifically to estimate the market operation amount of various fresh agricultural products such as vegetables and fruits, and the calculation formula is as follows:
wherein Ct is the annual market traffic (ton) of the fresh agricultural products in the market;
n is n types of fresh agricultural products in a certain area;
Wiobtaining the yield (ton) of the ith fresh agricultural product in a certain area according to statistical data;
Pidetermining the proportion (%) of the ith fresh agricultural product in a certain area in the market trading of a producing area according to the actual condition of investigation;
r is an adjustment coefficient, generally 0.8-1.2, and the upper limit value is preferably selected mainly in consideration of the fact that the local population and the consumption level thereof rise year by year; if the farmer market is active in the radiation range, it is advisable to take the lower limit value.
More specifically, the step S4 is to estimate the size of the trading area in the wholesale market of agricultural products, the wholesale market of agricultural products is mainly in spot trading, the trading hall (shed) is the main operating facility of the wholesale market of agricultural products, the building area of the trading hall (shed) is the sum of the building areas of the trading halls (sheds) of different trading varieties, and the specific calculation formula is as follows:
in the formula:
at is the total area (square meter) of a trade hall (shed) building of the wholesale market of the production place;
n is total n types of fresh agricultural products;
r is an adjustment coefficient/repeated utilization rate, and is determined according to the time of various fresh agricultural products in the region to appear on the market;
ai is the building area (square meter/ton) of the trading hall (shed) for each ton of the ith agricultural products, and fruits and vegetables are managed according to the indexesThe agricultural product wholesale market investigation is comprehensively balanced, and the following indexes are obtained by estimation: when calculating the area of the building in the trade hall (shed) for operating vegetables, dry goods and non-staple food, 30.0m is preferably used2T; when operating the building area of trade hall (shed) for fruit and frozen goods, 25.0m is preferably selected2T; 15.0m is preferably used when operating the building area of the trading hall (shed) for fresh and live aquatic products2T; when the building area of trading hall (shed) for dry goods and other agricultural products is managed, 20.0m is preferably taken2/t。
Ci is the annual market volume (ton) of the i-th agricultural product;
di is the number of days of operation of the ith agricultural product in the wholesale market and is determined according to the time of the fresh agricultural product on the market.
More specifically, the step S5 is to estimate the storage scale, and the fresh agricultural products mainly estimate the scale of the refrigeration house/refrigeration room;
the function of the cold storage is to store meat, vegetables, fruits, aquatic products, foods and the like. The occupied area of the cold storage is determined according to the nominal volume of a cold storage room or an ice storage and the height of the cold storage, and the nominal volume of the cold storage is determined according to the storage capacity required by various agricultural products. The calculation formula is as follows:
wherein S is the sum of the occupied areas (square meters) of a refrigeration house/refrigeration room required by various agricultural products;
n is the type of fresh agricultural products needing to be stored in the cold storage house/cold storage room;
ci is the annual market volume (ton) of the i-th agricultural product;
di is the operation days of the i-th agricultural product in market transaction and is determined according to the time of the fresh agricultural product on the market;
Bithe multiple of the refrigeration storage capacity and the daily menstruation volume required by the i-th agricultural products is determined according to the principle of being beneficial to prolonging the production period and being economical and reasonable, the consumption of general fruits and vegetables is calculated by 5-10 days, and the consumption of meat, poultry and aquatic products is calculated by 15-30 days;
ηithe volume utilization coefficient of the i-th agricultural products in a refrigeration house/refrigeration room is shown;
ρicalculating the density (kilogram/cubic meter) of the i-th agricultural product in the refrigerator/cold storage room;
hiis the net height (rice) of the freezer/cold room of the i-th agricultural product.
(1) The calculation of the utilization factor of the volume of the refrigerated space should comply with the following regulations:
TABLE 1 refrigerating compartment capacity utilization coefficient
Note: 1. for a freezer that only stores frozen processed foods or cooled processed foods, the nominal volume in the freezer is the sum of the nominal volumes of all the cold storage rooms; for a freezer that stores both frozen processed foods and cooled foods, the nominal volumes in the table should be the sum of the nominal volumes of each of the frozen object storage room and the cooled object storage room, respectively.
2. The volume utilization coefficient of the vegetable refrigerator is multiplied by a correction coefficient of 0.8 according to the numerical value in the table.
TABLE 2 volumetric utilization factor of ice storage
| Serial number | Ice house Jinggao (m) | Coefficient of volumetric utilization eta |
| 1 | ≤4.20 | 0.40 |
| 2 | 4.21-5.00 | 0.50 |
| 3 | 5.01-6.00 | 0.60 |
| 4 | ＞6.00 | 0.65 |
TABLE 3 calculated Density of food
| Serial number | Categories of food | Calculated Density (kg/m)3) |
| 1 | Frozen meat | 400 |
| 2 | Frozen sliced meat | 650 |
| 3 | Frozen fish | 470 |
| 4 | Basket-packed, boxed fresh eggs | 260 |
| 5 | Fresh vegetable | 230 |
| 6 | Basket-packed, boxed fresh fruit | 350 |
| 7 | Ice eggs | 700 |
| 8 | Machine-made ice making | 750 |
Note: when the same refrigeratory is used for simultaneously storing pork, beef and mutton (including poultry and rabbit), the density can be 400kg/m3Determining; when only frozen mutton is stored, the density is 250kg/m3Determining; when only frozen beef and mutton are stored, the density should be 300kg/m3And (4) determining.
S6: the size of the flow-through processing zone is estimated. The area provides primary processing service areas such as cleaning, grading, cutting, packaging, labeling and subpackaging for agricultural products, and a scale calculation formula of a wholesale market circulation processing area of a production place is as follows:
wherein A is the area scale (square meter) of the desired flow-through processing zone;
n is the type of the fresh agricultural products needing to be subjected to primary processing;
Vithe specific parameters are the volume (cubic meter/ton) occupied by the unit weight of the i-th agricultural product and are adjusted according to the investigation condition;
Tithe average transaction turnover time (days) of the i-th agricultural product is obtained according to the research data;
Lithe workload (ton) of the i-th agricultural product is calculated according to the investigation data;
τithe ratio of the workload of the i-th agricultural product in the processing circulation area to the total operation volume of the i-th agricultural product is calculated according to the investigation data;
r is an adjustment coefficient/repeated utilization rate, and is determined according to the time of various fresh agricultural products in the region to appear on the market;
hi is the volume per unit area that can hold a type i agricultural product (cubic meters per square meter).
TABLE 4 flow-through processing zone parameters
More specifically, the invention also provides a GIS-based agricultural product production area wholesale market planning auxiliary system which is used for executing the planning method and comprises a data acquisition module, a GIS spatial database, a market site selection module, a market operation scale estimation module, a market trading area scale estimation module, a market refrigeration house/refrigeration room scale estimation module and a circulation processing area scale estimation module. Wherein:
the data acquisition module is used for acquiring relevant data of market site selection and planning; including distribution and yield of fresh produce producing areas.
The GIS spatial database is used for storing GIS spatial data; the method comprises a yield data graph, a road graph, a map for planning, a basic farmland graph, a historical relic graph, an ecological red line graph, a disaster graph and the like.
The market site selection module is used for calculating the yield of fresh agricultural products, the transportation distance, an iterative algorithm and the like, and is used for obtaining the optimal site selection of a wholesale market in a regional range;
the market operation scale estimation module is used for estimating the operation amount of a wholesale market in a production place according to the yield of the regional fresh agricultural products and the social and economic level;
the market trading area scale estimation module is used for estimating the scale of trading halls (sheds) in the wholesale market of the production place;
the market refrigeration house/refrigeration house scale estimation module is used for estimating the scale of a refrigeration house/refrigeration house required by fresh agricultural products in a production area wholesale market;
the scale estimation module of the circulation processing area is used for estimating the scale of the primary processing service area and the matched circulation area in the wholesale market of the production place.
The invention comprehensively considers the influence factors of the wholesale market planning of the agricultural product producing area, and develops an auxiliary decision-making system for the wholesale market planning of the agricultural product producing area integrating market site selection, operation scale estimation and supporting facility scale estimation based on a GIS (geographic information system) and by combining a mobile index method, an iterative algorithm, a mathematical formula and the like. The traditional manual planning mode is changed into a computer-aided and manual combined mode, so that the data standardized storage, scientific quantitative analysis and spatial positioning analysis of agricultural product market planning are realized, and the planning normalization, scientificity and accuracy can be effectively improved. In addition, the system is not only an auxiliary decision system for agricultural product market planning, but also a co-construction sharing system for an agricultural product market planning database, and can lay a very solid foundation for the application of future big data technology.
By the method, the wholesale market of the agricultural product producing area can be scientifically and reasonably planned, and scientific basis is provided for site selection, construction and the like of the wholesale market of the agricultural product producing area, so that the driving effect of the wholesale market of the agricultural product producing area on the development of regional agricultural industry is better exerted.
Various other changes and modifications to the above-described embodiments and concepts will become apparent to those skilled in the art from the above description, and all such changes and modifications are intended to be included within the scope of the present invention as defined in the appended claims.
Claims (3)
1. A method for planning the wholesale market of agricultural product producing areas based on GIS is characterized by comprising the following steps:
s1: collecting base data of agricultural product wholesale market site selection, analyzing specific indexes in each administrative region by taking county/county as a unit, generating a GIS thematic map, and screening out candidate sites of the agricultural product wholesale market;
s2: on the basis of the candidate places, site selection calculation is carried out according to the yield of fresh agricultural products and the distance of transportation, and the optimal site selection of the wholesale market of the agricultural product production place is obtained;
s3: confirming the market operation volume of various fresh agricultural products in the wholesale market of the agricultural product producing area;
s4: estimating the scale of the market trading area;
s5: estimating the storage scale of a cold storage/cold storage room;
s6: estimating the size of the logistic processing area.
2. The method according to claim 1, wherein in step S1, the GIS thematic map is based on a regional planning database and the yield and distribution data of each fresh agricultural product production area, and through GIS overlay analysis, a distributed yield data map layer of agricultural products, a map layer for planning, a road map layer, a basic farmland map layer, a historical relic map layer, an ecological red line map layer, and a disaster map layer are generated, and the selectable area is screened to remove areas obviously unsuitable for building the agricultural product wholesale market, and the remaining selectable areas are candidate locations of the agricultural product production area wholesale market.
3. A GIS-based agricultural product producing area wholesale market planning assistance system for performing the planning method according to one of claims 1-2, characterized in that: the auxiliary system comprises a data acquisition module, a GIS spatial database, a market site selection module, a market operation scale estimation module, a market trading area scale estimation module, a market refrigeration house/refrigeration house scale estimation module and a circulation processing area scale estimation module, wherein:
the data acquisition module is used for acquiring relevant data of market site selection and planning;
the GIS spatial database is used for storing GIS spatial data; the method comprises planning and controlling red lines, land utilization planning maps, traffic planning maps, landform maps and disaster maps;
the market site selection module is used for calculating the yield of fresh agricultural products, the transportation distance and iteration calculation and solving the optimal site of a wholesale market in a regional range;
the market operation scale estimation module is used for estimating the operation amount of a wholesale market in a production place according to the yield of the regional fresh agricultural products and the social and economic level;
the market trading area scale estimation module is used for estimating the scale of trading halls in the wholesale market of the production place;
the market refrigeration house/refrigeration house scale estimation module is used for estimating the scale of a refrigeration house/refrigeration house required by fresh agricultural products in a production area wholesale market;
the scale estimation module of the circulation processing area is used for estimating the scale of the primary processing service area and the matched circulation area in the wholesale market of the production place.
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