CN110249893B - Greenbelt system of ecological corridor inside city group - Google Patents
Greenbelt system of ecological corridor inside city group Download PDFInfo
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- CN110249893B CN110249893B CN201910657016.2A CN201910657016A CN110249893B CN 110249893 B CN110249893 B CN 110249893B CN 201910657016 A CN201910657016 A CN 201910657016A CN 110249893 B CN110249893 B CN 110249893B
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 26
- 241000196324 Embryophyta Species 0.000 claims description 34
- 238000009423 ventilation Methods 0.000 claims description 26
- 230000007704 transition Effects 0.000 claims description 12
- 244000025254 Cannabis sativa Species 0.000 claims description 10
- 241000894007 species Species 0.000 claims description 6
- 230000000694 effects Effects 0.000 abstract description 15
- 238000009792 diffusion process Methods 0.000 abstract description 3
- 238000005728 strengthening Methods 0.000 abstract description 3
- 238000001816 cooling Methods 0.000 description 4
- 230000003247 decreasing effect Effects 0.000 description 4
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 239000000428 dust Substances 0.000 description 2
- 238000003915 air pollution Methods 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 238000007664 blowing Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 238000003973 irrigation Methods 0.000 description 1
- 230000004630 mental health Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 239000000779 smoke Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000002912 waste gas Substances 0.000 description 1
Classifications
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- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01G—HORTICULTURE; CULTIVATION OF VEGETABLES, FLOWERS, RICE, FRUIT, VINES, HOPS OR SEAWEED; FORESTRY; WATERING
- A01G17/00—Cultivation of hops, vines, fruit trees, or like trees
- A01G17/005—Cultivation methods
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- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01G—HORTICULTURE; CULTIVATION OF VEGETABLES, FLOWERS, RICE, FRUIT, VINES, HOPS OR SEAWEED; FORESTRY; WATERING
- A01G22/00—Cultivation of specific crops or plants not otherwise provided for
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A30/00—Adapting or protecting infrastructure or their operation
- Y02A30/60—Planning or developing urban green infrastructure
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- Life Sciences & Earth Sciences (AREA)
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- Environmental Sciences (AREA)
- Road Paving Structures (AREA)
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Abstract
The invention relates to a green belt system of an ecological corridor in an urban trunk road, which comprises an urban trunk road green belt arranged on a trunk road, a secondary road green belt arranged on a secondary trunk road intersected with the trunk road, a large and medium-sized urban green land and a water system coast green belt, wherein the urban trunk road green belt comprises road side green belts arranged on two sides of the trunk road and a road green belt arranged in the middle of the trunk road. The green belt system of the ecological corridor inside the urban mass carries out various forms of specific arrangement on the forms, plant types, arbor and shrub collocation, plant collocation and the like of the urban main road green belt, the secondary road green belt, the urban large and medium green land and the water system shore green belt, so as to finally achieve the function of strengthening the urban ecological corridor, effectively relieve the urban heat island effect and facilitate urban air flow and pollution diffusion.
Description
Technical Field
The invention relates to the field of ecological environment management and garden construction, in particular to a green belt system of an ecological corridor inside a city group.
Background
In recent years, the urban process of China is accelerated, the scale of cities is gradually enlarged, the number of cities is gradually increased, and a batch of oversized urban groups also appear. A series of environmental problems caused by the rapid development of cities, such as automobile exhaust and industrial smoke and dust are filled in the cities and cannot be dissipated; on one hand, urban high-strength construction encroaches on natural space, on the other hand, urban air flow is hindered, so that urban heat island phenomenon and other heat pollution and air pollution are serious abnormally, and serious threats are formed on urban ecological environment and physical and mental health of residents. Therefore, from the viewpoints of climate and ecology, it is important to construct ecological galleries of cities and urban groups, and the ecological galleries not only can take away harmful waste gas, dust and pollutants in urban air, but also can bring fresh air; and secondly, the extra heat and water vapor in the air are taken away, the heat island effect is relieved, and a relatively suitable climate environment is created for the city.
Urban roads, water systems and greenbelts are the most important ecological ventilation galleries in cities and urban clusters. Urban roads are not only places where urban traffic and personnel are active, but also important components of urban ventilation systems and ecological galleries, and are the main "passages" for the flow of air inside cities. Therefore, through the specific setting of urban green land, optimize and strengthen the ventilation situation of current urban road and building, constitute effective urban ventilation corridor and have important meaning.
Disclosure of Invention
The invention aims at providing a green belt system of an ecological corridor inside a city group aiming at the design purpose of a common green belt, mainly taking the common noise reduction, shading and landscaping functions as well as the ecological corridor function and the like into account, so as to strengthen the functions of ventilation, haze removal, greenhouse effect alleviation and the like in the city.
In order to achieve the above object, the present invention provides a green belt system for an ecological corridor inside a city group, comprising a green belt for an urban arterial road arranged on an arterial road, a green belt for a secondary road arranged on a secondary arterial road intersecting with the arterial road, a green land for a large and medium city and a water system coast green belt, wherein the green belt for the urban arterial road comprises green belts for road sides arranged on both sides of the arterial road and green belts for in-road green belts arranged in the middle of the arterial road, the green belts for the road sides are broadleaf trees and needle tree planted at intervals, the green belts for the in-road have a width of 1/8 to 1/4 of the width of the arterial road surface, the green belts for the secondary road are planted with large trees with large crowns on one side of the entrance of the secondary arterial road close to the wind direction, the opposite side of large-scale arbor is planted and is had little crown width arbor or low grass to irritate, the length of secondary road greenbelt is 1/10 of secondary trunk length, the centre in the middle of the big-and-middle-sized greenbelt in city is the greenbelt, sets up to the transparent state and plant grass planting and irritate the plant all around, the big-and-middle-sized greenbelt in city is in the position that is connected with ventilation gallery and sets up to the form to ventilation gallery direction convex, and the both sides of the big-and-middle-sized greenbelt in convex city are planted and are set up to low grass planting plant in the centre, the road greenbelt is along the water system both sides and with the road greenbelt that water shoreline set up perpendicularly, the road greenbelt sets up the transition zone from the entrance to the road is inside, the plant planting height of transition zone increases gradually, and plant density improves gradually.
Preferably, the height of the broadleaf arbor is 8-12 m, the height of the needle-leaf arbor is 10-18 m, and the plant spacing between the broadleaf arbor and the needle-leaf arbor is 0.8-1.5 times of the crown width of the broadleaf arbor.
Preferably, the plant spacing of the large arbor of the secondary road green belt is 0.5-1 times of the crown width of the adjacent tree species.
Preferably, the plant species in the raised urban large and medium green land portion is set to plant species having a gradually decreasing height along the direction of the projection, and the planting density is gradually decreased.
Preferably, the edges of the urban large and medium green lands are arranged in a zigzag or wavy shape.
Preferably, the length of the transition zone is 10-30 m.
Based on the technical scheme, the invention has the advantages that:
The green belt system of the ecological corridor inside the urban mass carries out various forms of specific arrangement on the forms, plant types, arbor and shrub collocation, plant collocation and the like of the urban main road green belt, the secondary road green belt, the urban large and medium green land and the water system shore green belt, so as to finally achieve the effects of strengthening the urban ecological corridor function, effectively relieving the urban heat island effect and being beneficial to urban air flow and pollution diffusion.
Drawings
The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this specification, illustrate embodiments of the application and together with the description serve to explain the application and do not constitute a limitation on the application. In the drawings:
FIG. 1 is a schematic view of a green belt for an urban arterial road;
FIG. 2 is a schematic view of a secondary road green belt;
fig. 3 is a schematic view of a large and medium-sized green space in a city.
Detailed Description
The technical scheme of the invention is further described in detail through the drawings and the embodiments.
The invention provides a green belt system of an ecological corridor inside a city group, which comprises a main road green belt, a secondary road green belt, a large and medium-sized green land of the city and a water system shore green belt, as shown in fig. 1-3, wherein a preferred embodiment of the invention is shown.
Specifically, the greenbelt system of the ecological corridor inside the urban mass comprises an urban main road greenbelt arranged on a main road 5, a secondary road greenbelt arranged on a secondary main road 6 intersected with the main road, a large and medium urban green land and a water system coast greenbelt, wherein the urban main road greenbelt comprises road side greenbelts 1 arranged on two sides of the main road 5 and a road middle greenbelt 2 arranged in the middle of the main road 5, the road side greenbelts 1 are broadleaf trees 3 and needle tree 4 which are planted at intervals, the width of the road middle greenbelt 2 is 1/8-1/4 of the width of the road surface of the main road 5, the secondary road greenbelts are planted with large-scale trees 7 with large crowns on one side of the entrance of the secondary main road 6 close to the wind direction, the opposite side of large-scale arbor 7 is planted and is had little crown width arbor 8 or low grass to irritate, the length of secondary road greenbelt is 1/10 of secondary trunk 6 length, the centre in the middle of the big-and-middle-sized greenbelt in city is greenbelt 10, sets up to the penetrating state and plants grass planting and irrigates the plant all around, the big-and-middle-sized greenbelt in city sets up to the form to ventilation gallery 9 direction convex in the position that is connected with ventilation gallery 9, and the both sides of the big-and-middle-sized greenbelt part in convex city are planted arbor and are set up to low grass plant that irrigates in the centre, the road greenbelt is along the water system both sides and with the road greenbelt that water bank line set up perpendicularly, the road greenbelt sets up the transition area from the entrance to the road is inside, the plant planting height of transition area increases gradually, and plant planting density improves gradually.
Urban arterial roads are generally used as main air ducts and play an important role in extending and assisting urban ventilation. Because the ventilation time of the larger wind speed is too strong and unstable, the ventilation, haze removal and cooling effects of the surrounding area of the gallery are not facilitated, and the stable and balanced air flow is more beneficial to realizing the functions. Therefore, in the setting of the urban arterial road green belt, the strong wind speed is reduced by properly increasing the roughness of the underlying surface and other modes so as to promote the stable wind speed and ensure the ventilation effect.
As shown in fig. 1, the urban arterial road green belt comprises road side green belts 1 arranged at both sides of an arterial road 5 and an in-road green belt 2 arranged in the middle of the arterial road 5. Preferably, the width of the urban arterial road is 30-40 m. The road side green belt 1 is mainly composed of arbor, evergreen tree species are selected as much as possible to keep the ventilation effect of four seasons, the arbor is composed of broadleaf arbor 3 and needle arbor 4, the broadleaf arbor 3 is a variety with larger adult crown, the height is 8-12 m, the needle arbor 4 is a tree species with smaller crown and large height, and the height is 10-18 m. The plant spacing between the broad-leaved arbor 3 and the needle-leaved arbor 4 is set to be 0.8-1.5 times of the crown width of the broad-leaved arbor 3.
On one hand, the urban arterial road green belt can strengthen the roughness of the underlying surface, plays a role in assisting in reducing the wind speed, and combing the air flow to ensure that the air flow is more stable, on the other hand, the urban arterial road green belt achieves the shading effect and can strengthen urban biodiversity. Due to the arrangement of the specific height and the specific width of the urban arterial road green belt, the ventilation effect of strong wind can be improved, and the ventilation effect of medium-speed wind is not influenced.
As shown in fig. 1, in a region with a high strong wind proportion in one year, a road green belt 2 can be added, the road green belt 2 is mainly selected from shrubs and herbaceous plants, and a small amount of low trees can be planted. The width of the green belt 2 in the road is preferably 1/8-1/4 of the width of the road surface.
As shown in fig. 2, the secondary trunk road 6 refers to a narrower secondary road intersecting the main trunk road 5 and its branches, and has a width of 14 to 24m. The wind source of the secondary main road 6 comes from the main road 5, so that the wind speed and the wind power are weakened, and air flow dead angles are often formed at the corners of the intersection, especially the vertical intersection, so that the ventilation effect is influenced.
Based on the main wind direction, a large arbor 7 is arranged on one side of the secondary road green belt, which is close to the wind direction of the main wind direction, at the road inlet, the crown width is required to be large, the shading is good, the plant spacing is 0.5-1 time of the crown width of the adjacent tree species, the opposite side of the large arbor 7 is mainly the arbor with smaller crown width and higher crown width, or only a low grass irrigator is arranged. The length of the secondary road green belt is 1/10 of the length of the secondary trunk road 6, and the total length is 10-50 m.
The secondary road green belt reduces the air flow inlet to a certain extent by means of the air flow dead angle at one side of the incoming air direction, so that the inlet forms a narrow pipe effect, the air speed entering the secondary trunk 6 is increased, the air pressure is reduced, and the ventilation efficiency of the secondary trunk 6 is accelerated.
The large and medium-sized green lands of the cities serve as sources of ecological cold sources and clean air of the cities, and play an important role in ventilation and cooling of the cities. However, most greenbelts are not set up in consideration of the aeration-cooling effect.
As shown in fig. 3, the middle of the large and medium green land in the city is a green land 10, and the periphery of the green land is set to be in a transparent state and planted with grass-planting and irrigating plants. The periphery of the large and medium-sized green land in the city is set to be in a transparent state, no shielding structures such as solid enclosing walls and the like exist, the periphery greening is mainly based on grasslands or low shrubs, and the periphery cannot be provided with dense structures such as forest belts and the like for blocking fresh air circulation. The large and medium-sized green land in the city is arranged in a protruding form towards the direction of the ventilation gallery 9 at the position connected with the ventilation gallery 9, and in greening planting, two sides of a protruding large and medium-sized green land part in the city are arranged as arbor, and the middle part is arranged as low-level grass-irrigation plant. Preferably, the plant species in the raised urban large and medium green land portion are arranged as plant species with gradually decreasing height along the raised direction and with gradually decreasing planting density, thereby forming an air guide belt assisting clean, constant temperature fresh air to be delivered to other areas of the city through the ventilation gallery 9.
For greenbelts adjacent to building clusters such as residential and commercial areas, the edge line length should be maximized. Preferably, the edges of the large and medium-sized green lands of the city are arranged in a zigzag shape or a wavy shape so as to improve the contact area with the area, so that the area is convenient for forming flowing air flow, the ventilation and cooling functions are improved, and the plant height and the density are the same as those of the large and medium-sized green lands of the city.
Urban water systems can include river channels, lakes, oceans and the like, and on the one hand, the urban water systems can serve as ventilation galleries to accelerate air flow, and on the other hand, due to the lower temperature of the urban water systems compared with other areas of the city, the urban water systems can serve as ecological cold sources to generate amphibious wind blowing from the water systems to land.
Further, the water system shore green belt is a road green belt which is arranged along two sides of the water system and is perpendicular to the water shore line, so that the water and the land can flow conveniently. The road green belt is provided with a transition belt from an inlet to the inside of a road, the plant planting height of the transition belt is gradually increased, and the plant planting density is gradually increased. The length of the transition zone is 10-30 m, and the plants follow the conventional green belt after the transition zone.
The green belt system of the ecological corridor inside the urban mass carries out various specific settings on the forms, plant types, arbor and shrub collocations, plant collocations and the like of the urban main road green belt, the secondary road green belt, the urban large and medium green land and the water system shore green belt which are common in species, so as to finally achieve the functions of strengthening the urban ecological corridor, effectively relieve the urban heat island effect and facilitate urban air flow and pollution diffusion.
Finally, it should be noted that the above-mentioned embodiments are only for illustrating the technical scheme of the present invention and are not limiting; while the invention has been described in detail with reference to the preferred embodiments, those skilled in the art will appreciate that: modifications may be made to the specific embodiments of the present invention or equivalents may be substituted for part of the technical features thereof; without departing from the spirit of the invention, it is intended to cover the scope of the invention as claimed.
Claims (4)
1. The utility model provides a greenbelt system of inside ecological corridor of city crowd which characterized in that: including setting up the urban arterial road greenbelt on arterial road (5), setting up secondary road greenbelt, urban large and medium-sized green land and the water system shore greenbelt on secondary arterial road (6) crossing with arterial road, urban arterial road greenbelt is including setting up road side greenbelt (1) in arterial road (5) both sides and setting up greenbelt (2) in the road in the middle of arterial road (5), road side greenbelt (1) is broadleaf arbor (3) and needle arbor (4) that the interval was planted, the width of greenbelt (2) in the road is 1/8 ~ 1/4 of arterial road (5) road width, secondary road greenbelt is close to main wind direction incoming wind direction one side at secondary arterial road (6) entry and plants big arbor (7) of big crown width, the plant spacing of the large arbor (7) is 0.5-1 times of the crown width of the adjacent tree species, the opposite sides of the large arbor (7) are planted with small crown width arbor (8) or low grass shrubs, the length of the secondary road green belt is 1/10 of the length of the secondary trunk road (6), the middle of the large and medium green land in the city is green land (10), the periphery of the large and medium green land in the city is set to be in a transparent state and planted with grass shrubs, the position of the large and medium green land in the city connected with the ventilation gallery (9) is set to be in a protruding form towards the direction of the ventilation gallery (9), the two sides of the large and medium green land part in the protruding city are planted with arbor and the middle of the large and medium green land part is set to be low grass shrubs, plant species in the large and medium-sized greenbelt part of convex city sets up to the plant species that highly reduces along the protrusion direction, and plant density reduces gradually, the water system shore greenbelt is along the water system both sides and with the road greenbelt that water shoreline set up perpendicularly, the road greenbelt sets up the transition area from the entrance to the road inside, the plant planting height of transition area increases gradually, and plant planting density improves gradually.
2. The greenbelt system according to claim 1, wherein: the height of the broad-leaved arbor (3) is 8-12 m, the height of the needle-leaved arbor (4) is 10-18 m, and the plant spacing between the broad-leaved arbor (3) and the needle-leaved arbor (4) is 0.8-1.5 times of the crown width of the broad-leaved arbor (3).
3. The greenbelt system according to claim 1, wherein: the edges of the large and medium-sized green lands in the city are arranged in a zigzag or wavy shape.
4. The greenbelt system according to claim 1, wherein: the length of the transition zone is 10-30 m.
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| CN112348239A (en) * | 2020-10-27 | 2021-02-09 | 中国建筑科学研究院有限公司 | Method for predicting intensity of artificial green land on heat island of alleviation city |
| CN113159560B (en) * | 2021-04-15 | 2023-12-05 | 中国科学院地理科学与资源研究所 | Optimization configuration method for sandy plant industry |
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