基于生态干扰度的宝清县湿地景观动态分析  

Dynamic Appraisals of Landscape Pattern in Baoqing County Wetland Based on Eco-disturbance Degree

作　　者：李继红[1] 胡庆磊[1] 

机构地区：[1]东北林业大学,黑龙江哈尔滨150040

出　　处：《西北林学院学报》2013年第5期154-159,194,共7页Journal of Northwest Forestry University

基　　金：黑龙江省博士后基金(LBH-Z10279)

摘　　要：以宝清县为研究对象,以1989年9月16日、1999年9月20日和2006年10月1日3期TM(ETM+)遥感影像和2010年10月9日1期SPOT遥感影像为数据源,借助生态干扰度指数、景观格局分析和GIS空间分析方法,探讨宝清县湿地生态干扰度时空动态分异及景观格局指数的响应机制。结果表明:1)全干扰类型面积从1989年的26 050.92hm2上升至28 756.42hm2;半干扰类型从877 869.69hm2上升至907 030.62hm2;而无干扰类型面积从1989年的96 207.24hm2下降至64 340.31hm2,景观呈破碎化趋势,景观干扰程度加强;2)在时间上,干扰过程会导致斑块数量(NP)和边缘密度指数(ED)总体呈上升趋势,平均斑块分形指数(MPFD)和面积加权的平均形状指数(AWMSI)总体在1989—2010年间呈下降趋势;3)空间上,人为干扰度指数与景观格局指数空间分布相关性大小依次为:斑块数量(NP)>边缘密度指数(ED)>面积加权的平均形状指数(AWMSI)>平均斑块分形指数(MPFD),呈正相关。Taking Baoqing County as the study area and using the Landsat Thematic Mapper/Enhanced Thematic Mapper Plus data collected on September 16, 1989, April 20, 1999 and October 1, 2006, as well as the Spot data collected on October 9, 2009 as the data sources, spatiotemporal dynamics of hemeroby and the landscape pattern response scheme were examined through hemeroby analysis, landscape pattern a nalysis, spatial patch analysis, and GIS spatial analysis. The results indicated that 1） complete hemeroby area increased from 26 050.9 2 hm2 in 1958 to 28 756.42 hme in 2010, while partial hemeroby area in- creased from 877 869.69 hm2 to 907 030.62 hm2 , and area without hemeroby declined from 96 207.24 hm2 to 64 340.31 hm2, the landscape patches in the study area became more fragmented, the interference to landscape pattern was strengthened. 2） Disturbance had led to an overall increase in the number of patches （NP） and an overall decrease in mean patch fractal dimension （MPFD）, edge density（ED）, and area weighted mean shape index （AWMSI） between 1989 and 2010. 3） Spatially, hemeroby was positively cor related with NP, ED, AWMSI, MPFD in an decreasing order of influence.

关 键 词：遥感 生态干扰度 湿地 景观动态评价 宝清县 景观格局指数 人机交互解译 

分 类 号：S771.8[农业科学—森林工程]