基于SRP模型的自然灾害多发区生态脆弱性时空分异研究——以辽宁省朝阳县为例

发布时间：2018-04-27 17:24

本文选题：生态脆弱性 + SRP模型　；参考：《地理科学》2015年11期

【摘要】：依据辽宁省朝阳县生态环境特点,利用朝阳县2003、2006、2009、2012年4个年份的气候、降水量、遥感影像、土壤与数字高程模型(DEM)等基础数据,利用GIS结合SRP模型研究辽宁省朝阳县2003~2012年间的生态脆弱性。研究表明:1 2003、2006、2009年朝阳县的生态脆弱性呈逐年恶化趋势,2006、2009年微度脆弱的面积较2003、2006年分别有所减小,比率分别为15.99%,10.86%;2006、2009年轻度脆弱、中度脆弱、重度脆弱、极度脆弱的面积较2003、2006年均出现不同程度的增加,其中,生态脆弱性偏高的地方主要分布在工业发达、人口众多、地势较高的城乡住宅用地及农业区。到2012年朝阳县生态脆弱性开始有所好转。2胜利乡是生态脆弱性最严重的地区,极度脆弱、重度脆弱、中度脆弱的面积分布中胜利乡均分布最多,比率分别为14.15%,10.26%,8.84%,七道岭乡是生态脆弱性最弱的地区,微度脆弱比率为6.42%。
[Abstract]:According to the characteristics of ecological environment in Chaoyang County, Liaoning Province, the basic data of climate, precipitation, remote sensing image, soil and digital elevation model (DEM) of Chaoyang County in 2012 were used. The ecological fragility of Chaoyang County in Liaoning Province from 2003 to 2012 was studied by using GIS and SRP model. The results show that the ecological vulnerability of Chaoyang County in 2009 is worsening year by year, and the area of micro-vulnerability in 2009 is smaller than that in 2003 and 2006, respectively, with the ratio of 15.990.86% in 2006, mild fragility, moderate fragility and severe fragility in 2009. Compared with 2003 and 2006, the extremely fragile area increased in different degrees, among which, the areas with high ecological vulnerability were mainly distributed in urban and rural residential land and agricultural areas with developed industry, large population and high topography. By 2012, the ecological vulnerability of Chaoyang County had begun to improve, and Victory Township was the region with the most serious ecological vulnerability, which was extremely fragile and severely fragile. The area distribution of the moderate fragility was the highest in Shengli Township. The ratios were 14.15 and 10.26, respectively. Qidaoling Township was the region with the weakest ecological vulnerability, and the micro-vulnerability ratio was 6.42.
【作者单位】：辽宁师范大学自然地理与空间信息科学辽宁省重点实验室;辽宁工程技术大学测绘与地理科学学院;中国科学院地理科学与资源研究所;
【基金】：国家自然科学基金项目(41171137) 2013年国家级大学生创新创业训练计划项目(201310165001) 辽宁省创新团队项目(wt2011002)资助
【分类号】：X43

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