摘要
应用遥感和地理信息技术,通过景观生态学的原理方法,采用反映湿地景观格局的面积、景观多样性、景观面积比例等指数,定量研究了1995-2006年玛曲沼泽湿地景观格局的动态变化。研究发现,受气候暖干影响,研究区湿地景观面积和斑块数目减少趋势明显,斑块数目下降最明显的面积区域是小于10 hm2的面积区间,景观形状指数的下降主要是由于大斑块的面积趋于规则化而引起的。通过研究景观格局变化,为高寒沼泽湿地的保护和可持续发展提供参考。
By using RS and GIS techniques, landscape ecological method, index of LAND, SHAPE,PD, the change of wetland landscape pattern in Maqu was systematically analyzed from 1995 to 2006. The results shown that the reduction tendency of the wetlands was obvious under the background of climate warming up, and the patch number significantly decreased for those area smaller than 10 hectares. At the same time, reduction in landscape shape index was mainly due to the regularly of larger patches. The results of this study could contribute to the protection of alpine marsh wetland.
出处
《草业科学》
CAS
CSCD
北大核心
2009年第8期57-62,共6页
Pratacultural Science
基金
国家自然科学基金资助项目(30700100)
国家教育部社科项目(06JC790020)
国家博士点基金项目(20070740031)
甘肃省"十一五"科技支撑项目(0708NKCA121)
国家"863"项目(2007AA10Z232)
关键词
沼泽湿地
景观格局
玛曲
频度分析
marsh wetland
landscape pattern
Maqu, frequency analysis
