CN102663225A - Quantitative analysis method of urban greenfield development based on greenfield growth index - Google Patents
Quantitative analysis method of urban greenfield development based on greenfield growth index Download PDFInfo
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- CN102663225A CN102663225A CN2012100582022A CN201210058202A CN102663225A CN 102663225 A CN102663225 A CN 102663225A CN 2012100582022 A CN2012100582022 A CN 2012100582022A CN 201210058202 A CN201210058202 A CN 201210058202A CN 102663225 A CN102663225 A CN 102663225A
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Abstract
The invention belongs to technical fields of geographic modeling and urban planning, and specially relates to a quantitative analysis method of an urban greenfield development based on a greenfield growth index. Specific steps of the invention are: 1. establishing an index system, wherein the index system is divided into three hierarchical scales including an area, an urban and a unit greenfield to measure a greenfield increase on different scales. The index system is divided into two parts including a quantity index and a space pattern index to establish an evaluating system to measure the greenfield increase according to a quantity need of the greenfield increase and a change of the greenfield space pattern from various scales. 2. determining a calculating parameter, wherein planning orientation is determined and a threshold is set on prior knowledge and combining industrial and international standards. 3. calculating a result specifically, wherein a space increase of greenfield is measured, counted and described, a process of the greenfield increase is analyzed, and a rule of the greenfield increase is researched through the index system participating into the calculation.
Description
Technical field
The invention belongs to geographical modeling and city planning technical field, be specifically related to a kind of urban green space and expand quantitative analysis method based on the ground growth index.
Background technology
The maximum characteristic of current Chinese city greenery patches development and space structure thereof and ecological functions development is exactly " mobilism ".In many cities; " put things right once and for all ", the green space structure of " unalterable " do not existed; The sort of greenery patches single or plain vanilla is rare; Replace, what reality appeared is the greenery patches 26S Proteasome Structure and Function that is constantly changing along with urban development, enriching, and the process that is based on nature that dreamboat needs, takes into account the development in cities and towns and constantly changes improvement, structure and ecological functions and stage by stage, progressively be tending towards urban green space structure and the ecological functions optimized.Over nearly 20 years, Chinese city gardens greenery area rises to 121.2 ten thousand square metres from 15.3 ten thousand square metres, increases nearly 8 times.Therefore, it is most important how through effective ways quantitative expansion assay to be carried out in the urban green space.
Current urban green space is expanded analytical approach and is also had following weak point:
With current demand forms sharp contrast be, the effective technology aspect the growth of greenery patches and means are obviously not enough, almost are blank about the theory of growth aspect, greenery patches, and the research of shortage architecture.Therefore; Be starved of at present about greenery patches growth pattern rule, the research of dynamic quantity analytical technology; Planning and construction to instruct dissimilar urban green spaces in China's rapid urbanization course make it to give full play to ecological functions, and the space-time cooperative development of real realization and all kinds of lands used in city.
Control indexes is a mode commonly used in the present urban green system planning, and people hope to quantize the reasonable distribution of greenery patches in the city with numeral, to reach the maximum function benefit of greenery patches to the city.The present invention is on the basis of urban green system planning index system and landscape ecology spatial analysis index number system; The greenery patches growth figure system that construction is corresponding with greenery patches growth pattern and programmed decision-making; In order to variation and the variation of spatial framework of the amount in reflection greenery patches, directly guiding plan is made a strategic decision.Index system is divided into zone, three the yardstick levels in city and greenery patches, unit, increases with the greenery patches of weighing on the different scale.System is divided into quantitative index and spatial framework index two parts, and the demand that the number needs summation green space general layout that the greenery patches is increased under each yardstick changes goes out to send to inquire into to set up weighs the appraisement system that the greenery patches increases.
Summary of the invention
The object of the present invention is to provide and a kind ofly can measure, add up and describe the volume grows in greenery patches, analyze the process that the greenery patches increases, quantitative analysis method be expanded in the urban green space of the rule that the research greenery patches increases.
Quantitative analysis method is expanded in urban green space provided by the invention, from the city to the greenery patches increased requirement, on the basis of greenery patches growth pattern; Spacial analytical method in conjunction with urban green system planning theory, time and landscape ecology; Set up and estimate the index system that analysis is expanded in the greenery patches, and participate in computing, and then the volume grows in greenery patches is measured, added up and describes through index system; Analyze the process that the greenery patches increases, the rule that the research greenery patches increases.Concrete steps are:
Step 1, set up index system
Index system is divided into zone, three the yardstick levels in city and greenery patches, unit, increases with the greenery patches of weighing on the different scale.System is divided into quantitative index and spatial framework index two parts, and the number needs summation green space general layout that the greenery patches is increased under each yardstick changes to set up weighs the appraisement system that the greenery patches increases.Quantitative index comprises indexs such as forest coverage rate and per capita green area, and the spatial framework index comprises indexs such as relative width and greenery patches barycenter.Quantitative index under the different scale is carried out different settings based on the yardstick factor again with the spatial framework index.
The confirming of step 2, calculating parameter (be confirming of concrete planning orientation and threshold values, and foundation)
The value orientation of programmed decision-making has determined the selection of index and has changed direction.The present invention combines industry, international standard to confirm planning orientation and setting threshold according to priori.
Step 3, result's concrete calculating
The statistics and the enquiry datas such as statistics area in the basis greenery patches of quantitative index.The space index that the geometric index in the basis greenery patches of spatial framework index is relevant with the greenery patches calculates.
The present invention brings NDVI exponential sum fractal dimension in the spatial framework index into,
NDVI=(NIR-R)/(NIR+R)
NDVI is a normalized differential vegetation index, and NIR is the near-infrared band reflectance value, and R is red wave band reflectance value,
F d Be the fractal dimension index,
pBe the number of greenery patches patch,
AThe length of side for the greenery patches patch.
Description of drawings
Fig. 1 is that the quantitative analysis method diagram is expanded in the urban green space based on the greenery patches growth index of the present invention.
Fig. 2 is that diagram is expanded in the urban green space, Hangzhou among the embodiment.
Embodiment
Below in conjunction with instantiation and accompanying drawing, further describe content of the present invention:
With reference to accompanying drawing 1; Fig. 1 is a basic fundamental process flow diagram of the present invention; The quantitative analysis method that the greenery patches that the present invention proposes is expanded is based upon the greenery patches and expands on the basis of evaluation number, and index system is divided into zone, three the yardstick levels in city and greenery patches, unit, increases with the greenery patches of weighing on the different scale.System is divided into quantitative index and spatial framework index two parts, and the demand that the number needs summation green space general layout that the greenery patches is increased under each yardstick changes goes out to send to inquire into to set up weighs the appraisement system that the greenery patches increases.
The zone index system
Annotate: i is a greenery patches view type sum, and n is the element number among the view type i, and P is a girth, P
iBe the ratio that i kind greenery patches view type accounts for the view total area, D is the dominance index, H
MaxBe the diversity index when all types of probabilities of occurrence in greenery patches equate.
City (subregion) index system
Annotate: i is a greenery patches view type sum, and n is the element number among the view type i, and P is a girth, and A is the study area view total area, P
iBe the ratio that i kind greenery patches view type accounts for the view total area, P
XBe connection degree index, A (i) is the area of patch i; NND (i) is the minor increment of patch i to its adjacent patch, and E is the uniformity coefficient index, and D is the dominance index, H
MaxBe the diversity index when all types of probabilities of occurrence in greenery patches equate, F
dBe fractal dimension, NIR is near infrared brightness value, and R is the brightness value of red visible light.
Greenery patches, unit index system
Annotate: S is a greenery patches patch morphological index, and P is a girth, and A is the study area view total area, F
dBe fractal dimension.
The Hangzhou is positioned at the north in Zhejiang Province, is ringed on three sides by mountains in north, west, south, and physical features is tilted to launch by southwest northeastward, and towards Hangzhou Wan, northeast is adjacent with the Shanghai, commerce and trade city of China's maximum.Have superior geographical location and sea-lanes of communication condition easily, scenery tourist resources is very abundant.The peripheral ecologic setting in urban construction district is good, and general layout is stable.The average annual growth of city of Hangzhou greenery area, synchronous with urban development and population growth.The river course greening is built better, and banded along the river greenery patches characteristic is obvious.The greenery patches characteristic is not enough, function singleness, and skewness, each distinguishes per capita that park green land differs greatly, park green land insufficient total amount in the part subregion.See Fig. 2.
Change and can find from soil, the Hangzhou utilizations in 1980 to 1996, the direction of city expansion is totally surrounded by mountains westwards, the northeast is expanded, southwest is striden 3 directions in river and developed; The urban construction zone mainly concentrates on periphery, northeast and the south in main city.This extended mode and urban function are evacuated and are closely connected.The Binjiang District in the Xia Sha district of northeast, main city and south is respectively the leading Hangzhou Economical Technology Development District of industrial function and the money river new city of comprehensive function.
See from the expansion pattern of Hangzhou, the spatial shape in a very long time Hangzhou, with north, the Qiantang River on the bank city, Xiacheng District and Jianggan District be that the ring layer formula extension feature of core is very obvious, and the future city increases the characteristic that also can continue the circle segment laminar.In this mode, first lap is the core area in zone with Shangcheng District, Xiacheng District and Jianggan District western part, and function is main with commercial affairs, administration and inhabitation.Second circle comprises Gongshu District, Xihu District northeast, and zones such as the economic and technological development zone surrounding area in the economic and technological development zone of Binjiang District, Jianggan District and Yuhang are comprehensive circles.The 3rd circle comprise Xiaoshan City middle part and east and Yuhang, face flat, areas such as dwell in the pool, a good small piece of land surrounded by water, bottle kiln, be concentrated area, manufacturing district.3 other outer parts of ring layer are external radiation areas, Hangzhou.
Table 1 city is expanded and is enlarged afforested area analysis
Claims (2)
1. expand quantitative analysis method based on the urban green space of greenery patches growth index, it is characterized in that: from the city to the greenery patches increased requirement, on the basis of greenery patches growth pattern; Spacial analytical method in conjunction with urban green system planning theory, time and landscape ecology; Set up and estimate the index system that analysis is expanded in the greenery patches, and participate in computing, and then the volume grows in greenery patches is measured, added up and describes through index system; Analyze the process that the greenery patches increases, the rule that the research greenery patches increases; Concrete steps are:
Step 1, set up index system
Index system is divided into zone, three the yardstick levels in city and greenery patches, unit, increases with the greenery patches of weighing on the different scale; Index system is divided into quantitative index and spatial framework index two parts, and the number needs summation green space general layout that the greenery patches is increased under each yardstick changes to set up weighs the appraisement system that the greenery patches increases; Quantitative index comprises indexs such as forest coverage rate and per capita green area, and the spatial framework index comprises indexs such as relative width and greenery patches barycenter; Quantitative index under the different scale is carried out different settings according to the yardstick factor again with the spatial framework index;
Confirming of step 2, calculating parameter
The value orientation of programmed decision-making has determined the selection of index and has changed direction, combines industry, international standard to confirm planning orientation and setting threshold based on priori;
Step 3, result's concrete calculating
The statistics and the enquiry datas such as statistics area in the basis greenery patches of quantitative index; The space index that the geometric index in the basis greenery patches of spatial framework index is relevant with the greenery patches calculates;
NDVI exponential sum fractal dimension is brought in the spatial framework index,
NDVI=(NIR-R)/(NIR+R)
NDVI is a normalized differential vegetation index, and NIR is the near-infrared band reflectance value, and R is red wave band reflectance value;
F d Be the fractal dimension index,
pBe the number of greenery patches patch,
AThe length of side for the greenery patches patch.
2. quantitative analysis method is expanded in the urban green space based on the greenery patches growth index according to claim 1, it is characterized in that:
(1) the zone index system does
Annotate: i is a greenery patches view type sum, and n is the element number among the view type i, and P is a girth, P
iBe the ratio that i kind greenery patches view type accounts for the view total area, D is the dominance index, H
MaxBe the diversity index when all types of probabilities of occurrence in greenery patches equate;
(2) the city index system does
Annotate: i is a greenery patches view type sum, and n is the element number among the view type i, and P is a girth, and A is the study area view total area, P
iBe the ratio that i kind greenery patches view type accounts for the view total area, P
XBe connection degree index, A (i) is the area of patch i; NND (i) is the minor increment of patch i to its adjacent patch, and E is the uniformity coefficient index, and D is the dominance index, H
MaxBe the diversity index when all types of probabilities of occurrence in greenery patches equate, F
dBe fractal dimension, NIR is near infrared brightness value, and R is the brightness value of red visible light;
(3) greenery patches, unit index system does
Annotate: S is a greenery patches patch morphological index, and P is a girth, and A is the study area view total area, F
dBe fractal dimension.
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103918514A (en) * | 2014-04-22 | 2014-07-16 | 东南大学 | Method for optimizing urban green land pattern based on environmental effect field model |
| CN104134158A (en) * | 2014-07-29 | 2014-11-05 | 环境保护部卫星环境应用中心 | Interference analysis method of nuclear power plant landscape |
| CN114881461A (en) * | 2022-05-06 | 2022-08-09 | 合肥市紫蓬园林工程有限公司 | Landscaping management method and landscaping management system |
| CN115062897A (en) * | 2022-05-05 | 2022-09-16 | 中国测绘科学研究院 | Urban ecological space equilibrium measurement and urban ecological pattern comprehensive evaluation method |
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| CN101794433A (en) * | 2010-03-03 | 2010-08-04 | 北京师范大学 | City planning implemented ecological security post-evaluation method |
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| CN101794433A (en) * | 2010-03-03 | 2010-08-04 | 北京师范大学 | City planning implemented ecological security post-evaluation method |
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| 王雪: "城市绿地空间分布及其热环境效应遥感分析", 《中国博士学位论文全文数据库（电子期刊）》, 31 March 2007 (2007-03-31) * |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103918514A (en) * | 2014-04-22 | 2014-07-16 | 东南大学 | Method for optimizing urban green land pattern based on environmental effect field model |
| CN104134158A (en) * | 2014-07-29 | 2014-11-05 | 环境保护部卫星环境应用中心 | Interference analysis method of nuclear power plant landscape |
| CN115062897A (en) * | 2022-05-05 | 2022-09-16 | 中国测绘科学研究院 | Urban ecological space equilibrium measurement and urban ecological pattern comprehensive evaluation method |
| CN114881461A (en) * | 2022-05-06 | 2022-08-09 | 合肥市紫蓬园林工程有限公司 | Landscaping management method and landscaping management system |
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Application publication date: 20120912 |