本文關(guān)鍵詞： 城市生態(tài)安全格局 源匯理論 最小累積阻力模型 寧國市　出處：《環(huán)境科學(xué)學(xué)報(bào)》2016年12期 　論文類型：期刊論文

【摘要】：根據(jù)景觀生態(tài)學(xué)相關(guān)理論,選取高程、坡度、土地利用類型、植被覆蓋度、土壤侵蝕、距風(fēng)景名勝區(qū)距離、距水體距離、距道路距離、距居民點(diǎn)距離、距工業(yè)用地距離、距礦點(diǎn)距離等11個(gè)生態(tài)安全評(píng)價(jià)因子,應(yīng)用GIS空間分析技術(shù)對(duì)安徽省寧國市生態(tài)安全等級(jí)進(jìn)行劃分,并采用基于源匯理論的最小累積阻力(MCR)模型構(gòu)建寧國市生態(tài)廊道和生態(tài)節(jié)點(diǎn),優(yōu)化生態(tài)網(wǎng)絡(luò)布局.模擬結(jié)果表明,寧國市總體生態(tài)安全水平較高,高度安全的區(qū)域面積為1174.38 km2,占區(qū)域總面積的48.41%;低度安全的區(qū)域面積為232.07 km2,占區(qū)域總面積的9.57%;在生態(tài)安全評(píng)價(jià)的基礎(chǔ)上,提取了寧國市88條潛在生態(tài)廊道,總長度約1426.99 km,生態(tài)節(jié)點(diǎn)57個(gè).與現(xiàn)有生態(tài)廊道相比較,寧國市需進(jìn)一步補(bǔ)充11條主要生態(tài)廊道,總長度約241.37 km,這對(duì)城市生態(tài)安全保護(hù)具有重要的意義.
[Abstract]:According to the theory of landscape ecology, height, slope, land use type, vegetation coverage, soil erosion, distance from scenic area, water body, road, residential area, industrial land, etc. By using the GIS spatial analysis technique, the ecological security grade of Ningguo City in Anhui Province was divided into 11 ecological security evaluation factors, such as distance from the mine site. The minimum cumulative resistance (MCR) model based on the theory of source and sink is used to construct ecological corridors and ecological nodes in Ningguo to optimize the ecological network layout. The simulation results show that the overall ecological security level of Ningguo City is high. The area of high safety is 1174.38 km ~ 2, accounting for 48.41% of the total area, while the area of low degree is 232.07 km ~ 2, accounting for 9.57% of the total area. 88 potential ecological corridors of Ningguo City were extracted on the basis of ecological security evaluation. The total length is about 1426.99 km and the ecological node is 57. Compared with the existing ecological corridor, Ningguo city needs to further supplement 11 main ecological corridors, the total length of which is about 241.37 km, which is of great significance to the protection of urban ecological security.
【作者單位】： 中國環(huán)境科學(xué)研究院;中國城市規(guī)劃設(shè)計(jì)研究院;
【基金】：環(huán)境保護(hù)部重大專項(xiàng)~~
【分類號(hào)】：X826;X321
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本文編號(hào)：1550204