周边区域景观破碎对铜鼓岭国家级自然保护区的压力分析

以铜鼓岭自然保护区及其周边地区为研究对象,基于2004年的SPOT-5卫星遥感数据,应用ERDAS、ArcGIS等遥感和GIS软件提取出研究区的景观要素分类信息,并选用斑块密度(PD)、最大斑块指数(LPI)、面积加权平均形状指数(AWMSI)、面积加权平均斑块分维数(AWMPFD)、斑块面积变异系数(PSCOV)等景观指数和ArcGIS空间分析功能对保护区及其周边区域(缓冲区)进行景观指数分析。结果表明,铜鼓岭地区景观破碎化趋于严重,在保护区外1 km的范围内,海防林破坏,红树林锐减,生态压力大;高位养虾池的大量建造是威胁保护区生态健康的主要因素。

Stress of surrounding areas landscape fragmentation on Tongguling National Nature Reserve

Based on the SPOT-5 RS image data in 2004 and using ERDAS and ArcGIS to pick up landscape classification information,this paper studied the landscape fragmentation of the surrounding areas of Tongguling National Natural Reserve,and the ecological stress of this fragmentation on the Reserve.PD,LPI,AWMSI,AWMPFD and PSCOV landscape indices were selected to analyze the landscape fragmentation,and ArcGIS spatial analysis was used to explore the ecological stress.The results showed that landscape fragmentation was serious in Tongguling area.In the 1 km buffer zone outside the Reserve,coast-protected forests were destroyed,mangrove forests were decreasing,and high position aquaculture ponds were constructed in large areas.These environmental problems threatened the healthy and sustainable development of the Nature Reserve.