Ecological Suitability Analysis Of Planned Area Of Hongensi Park For Landscape Planning

The ecology suitability is refers to the ecological condition of land (for example light, heat, water, earth as well as terrain and so on), being suitable or not and the suitable degree for some kind of use. Because the mountainous park has the quite great environment heterogeneity, that need ecology suitability to offer reference. At present stage in the botanical garden landscape plan, although the suitability analysis method has the application, but also has not formed the system the theory, therefore has the necessity in the present stage to research on the method of suitability analysis.This study was focused on the suitability analysis of Hongensi garden from four aspects, terrain, soil, hydrology and vegetation. By using the R2V evaluation, the adjustment, the use geographic information system technical method, based on the two-dimensional topographic diagram of Hongensi garden.1. The results of terrain analysis, including elevation analysis, slope analysis, direction analysis indicated that the slope of the mountain was from 0°to 85°, the mountainous region faces south to the region occupies the park plan area 45%, because the southing can receive the sunlight in certain time illumination being suitable to carry on the vegetation landscape building.2. The type and volume weight of soil were analyzed, combined with direction and degree of slope, and the sensitive region, serious soil erosion territory area and steep mountain cliff area was analyzed. The results showed that the slope degree less than 5°was mostly distributed on the top and back of the mountain, slope degree from 5°to 25°takes a major part, located in the middle part of the mountain, belonging to less sensitive region, slope degree from 25°to 45°has the most distributed area, belonging to sensitive region, the woodland showed focused on protection and not fit for arable land construction. Vegetation should be enhanced to minimize water loss and soil erosion. Slope degree high than 45°takes a small part, mostly steep coast, is the extremely sensitive region of water loss and soil erosion. It is instable and easy to results in coast, collapse, so vegetation should be enforced for protection. The slope region which higher than 18°the soil erosion modulus is big, the vegetation coverage fraction is very low, is the soil erosion extremely sensitive land sector, should carry on the vegetation to restore, the increase vegetation degree of coverage, is the slope protection forest construction key region, this part occupied has planned about region 25%.3. The basis current of water direction, the afflux cumulate and the afflux region analysis, unifies the ground the prominence, the ridge line and the valley route position, provides the essential reference for Hongensi park water landscape selected location, finally has determined the Hongensi park wetland landscape position and the scope. The Hongensi Park plans in the region the natural precipitation mainly to collect in the mountain massif southeast surface, therefore may establish the wetland landscape in here. Possible to establish the wetland the region to have two, south side its Middle East the south side wetland is broad in the region, the drainage area is approximately 84088m~2, may complete the big ecology lake; The southeast surface north side wetland in the drainage area is 35939m~2, the basin is long and narrow, also the existence certain quantity steep mountain cliff, may consider the establishment stepped wetland, may form the unique wetland landscape, but also may purify the water body.4. After analyzed the vegetation present situation including the vegetation type, the vegetation shade density and the vegetation coverage, join together with Hongensi Park soil and the terrain analysis, may know in plan area most soil for micro acid violet ochre, accounts for the total area 86.9%.Purple ochre, the dull purple earth organic content is high, mainly distributes in the park northwest, also is the vegetation degree of cover big region. The analysis result provides the reasonable basis for the different habitat plant disposition, has determined in the park the different region plant disposition method. Swims the line along the way beautifies through the forest form transformation and the afforestation, the key prominent forest form, the seasonal aspect, forest story, the edge of forest line, forest canopy line and the plant community overall construction landscape effect, provides the colorful vegetation community landscape watching content, achieved improves the overall plant landscape quality the goal. Tree, shrub, the herb and so on the different category plant carries on the reasonable disposition to form the community -like landscape effect. he slope protection and the slope crag uses plant processing, reduces the soil erosion. The slope protection choice grows the plant which quick, the density high, solid earth ability strong, the water resistance strong, easy to maintain. Regarding in the gully region and the garden the water, including the lake pond, the brook and so on, the periphery plant landscape construction does not neglect. Carries on the transformation in the gully region existence secondary brush region to afforest, mixes by the conifer and broadleaf hands over the way to make the scenery; And it disposes the type rich color leaf microphanerophyte, the bush and the flowered bush, the rich landscape level, or the planter local characteristic plant, forms the unique landscape.In order to guarantee the rationality and the sustainable development of the landscape construction, the road system must establish the reasonable buffer to protect the ecology frail region, not only plays connects each scenic spot role, but also established the exquisite botanical garden landscape. This study also carried on the analysis to the landscape line of sight accessibility, the union key scenic area function radiation scope, establishes the reasonable key scenic area the buffer.Finally, according to every single analysis results, through the Arc View superimposition analysis, we determined the various regions suitability rank of Hongensi Park, provided the policy-making basis and the plan advisory opinion for the landscape construction.