基于2012年土地利用数据,利用InVEST生境质量模型对贵州省麻江县低山丘陵、岩溶槽谷和中山峡谷3种地貌类型区的生境退化程度进行评价。结果表明：3种地貌类型区的主导土地利用类型均为耕地和林地,而草地、城镇工矿用地、农村居民点和水域相对较小。平均生境退化程度为低山丘陵>岩溶槽谷>中山峡谷。低山丘陵生境退化程度高值和低值分别分布于中东部河谷和西部山区。岩溶槽谷生境退化程度高值和低值分别分布于中部、南部槽谷底部和槽谷两侧。中山峡谷生境退化程度高值和低值分别分布于中北部峡谷底部和峡谷两侧高山。随坡度增加,3种地貌区的平均生境退化程度降低。不同地貌类型区的平均生境退化程度在各坡度带变化趋势亦有所不同。%This paper evaluated the habitat degradation degree in three different landforms of low hill, karst ridge-trough and medium-high mountain-gorge using the InVEST habitat quality model based on the data of land use in 2012 . The results showed that cultivated land and forest land were the dominant land use types in three different landforms. The area of grassland, industrial and mining land, rural settlement and water body were relatively small. Average habitat degradation degree was low hill>karst ridge-trough>medium-high mountain-gorge. The high value and low value of habitat degradation degree in low hill were distributed in valleyof mid-east part and mountain area of west part, respectively. The high value and low value of habitat degradation degree in karst ridge-trough were located in the bottom of ridge-trough of south-central part and both sides of ridge-trough, respectively. The high value and low value of habitat degradation degree in medium-high mountain-gorge were located in the bottom of gorgeof north-central part and mountain area on both sides of gorge, respectively. Average habitat degradation degree declined with the increase of slope. There were great differences of average habitat degradation degree for three landforms in each slope level.
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