马鞍山市生态网络识别与优化

Identification and Optimization of Ecological Network in Ma'anshan City

城市的快速发展导致区域生境斑块破碎,科学地构建生态网络可以有效地连接区域生境斑块,保障区域生物多样性和生态安全。以安徽省马鞍山市为研究对象,采用MSPA方法与生境斑块最小面积、景观连通性分析最佳距离阈值相结合的方法识别源地;MCR模型识别潜在廊道;重力模型提取研究区重要廊道,最后对其进行优化,从而构建马鞍山市生态网络。研究结果表明:马鞍山市识别的生态源地共计14处,识别的潜在生态廊道共计91条,重要生态廊道9条,一般生态廊道82条,主要分布于研究区域西北与中东部。优化后的生态网络共有生态源地17处、生态廊道136条,廊道网络结构相关指数有较大提升。本文的研究结果可以为马鞍山市生态网络的识别与优化提供科学依据,使之合理地协调未来马鞍山市城市的发展和区域的生态保护。

The rapid development of cities has led to fragmentation of regional habitat patches.Scientifically constructing ecological networks can effectively connect regional habitat patches and ensure regional biodiversity and ecological security.Taking Ma'anshan City in Anhui Province as the research object,the MSPA method combined with the minimum area of habitat patches and the optimal distance threshold for landscape connectivity analysis was used to identify source areas;MCR model identified potential corridors;gravity model extracted important corridors in the study area,and finally optimize it to build an ecological network of Ma'anshan City.The results of the study show that there are 14 ecological sources identified in Ma'anshan City,91 potential ecological corridors identified,9 important ecological corridors,and 82 general ecological corridors,which are mainly distributed in the northwest and middle east of the study area.The optimized ecological network has a total of 17 ecological sources and 136 ecological corridors,and the correlation index of the corridor network structure has been greatly improved.The research results of this paper can provide a scientific basis for the identification and optimization of the ecological network of Ma'anshan City,so that it can reasonably coordinate the future urban development of Ma'anshan City and regional ecological protection.