基于景观结构的经济发达地区生态风险评价——以昆山市为例  

Evaluation of Ecological Risk in Developed Regions Based on Landscape Structure:A Case Study of Kunshan City

作　　者：宋珂[1] 宋喧 韩涛[1] 

机构地区：[1]江苏省地质调查研究院,江苏南京210018

出　　处：《江西农业学报》2015年第1期104-109,共6页Acta Agriculturae Jiangxi

基　　金：江苏省国土资源厅科技项目201045"线性交通工程建设的土地景观生态效应研究"(苏国土资函[2010]771号)

摘　　要：土地利用变化会带来景观结构变化，从而对景观生态安全带来影响。以江苏省昆山市为研究区域，选取1985和2010年2期遥感影像为基本信息，在构建生态风险指数基础上，基于空间分析手段，揭示了经济快速发展对景观格局及区域生态风险的影响。结果表明：1985～2010年，昆山市经济快速发展，人类活动强烈，景观干扰度增大，景观格局从以耕地为基本类型，向耕地、水域和农居点共同主导方向转变，耕地和水域是今后昆山最具有生态风险的景观类型；昆山生态风险形成以城市为中心向外增长趋势，全市有46．15％区域生态风险明显上升，还有23．2％区域生态风险也有所增强。经济快速发展对于区域景观格局作用强烈，导致区域生态风险处于上升态势。Land use change can bring about landscape structure change, and affect the ecological safety of the landscape.Tak-ing Kunshan city, Jiangsu province as the studied region, according to the remote sensing images of Kunshan city in 1985 and 2010, the author constructed the ecological risk index of this city, and studied the impacts of high-speed economic development on the landscape pattern and regional ecological risk based on the spatial analysis method.The results indicated that：from 1985 to 2010, the economy of Kunshan city developed rapidly, human activities were intense, and landscape disturbance increased quickly; the landscape pattern transformed from basic type farmland to farmland, water area and rural residence, and farmland and water area will be the landscape types with the greatest ecological risk in the future.The ecological risk of Kunshan city increased from urban center to rural region, the ecological risk of 46.15%regions of this city increased markedly, and that of 23.20% regions also en-hanced to some extent.So the rapid economic development had intense effect on the regional landscape pattern, and led to the rising of regional ecological risk.

关 键 词：生态风险 景观结构 经济发达地区 昆山 

分 类 号：F301.24[经济管理—产业经济]