摘要
针对流域生态系统恢复潜力问题，以南汀河流域为研究区域，选取斑块丰富度密度、NDVI、地形起伏度、坡度、坡向、多年平均降水量等作为评价指标，运用层次分析法确定指标权重，并结合评价指标模型对多源数据进行空间叠加分析，对南汀河流域的恢复潜力进行了定量评价。结果表明：南汀河流域的恢复潜力值在O．1896-0．9636之间；平均值为0．5215，恢复力达到中等或较高水平以上的流域面积为5114．43km2，占流域总面积的65％，表明南汀河流域总体恢复潜力较好；在空间分布上，南汀河流域生态恢复潜力总体趋势呈西高东低，西部和南部处于高或较高恢复水平，中部和东部沿河流地区处于中等、较低或低恢复力水平；其中，低恢复力区域主要为沿流域腹地的特点比较明显，此外，该研究也为南汀河流域的生态恢复与生态重建工作的顺利开展提供决策依据。
Aiming at the potential ability of watershed ecosystem restoration, we choose the Nanting River Basin as the study area, based on the patch richness density, NDVI, undulating terrain, slope and rainfall as the evaluation index, the paper uses AHP to determine the index weight. Combining with the evaluation index model of spatial overlay analysis of multi-source data, recovery potential of the Nanting River Basin was quantitatively evaluated. The results shows that： the potential value is between 0.1896 to 0.9636, and its average value is 0.5215; Among them, the restoring force reaches an area of middle or high level above 5114.43 km2 whose area accounts for 65% in the total area, which suggests the better restoring ability in Nanting River Basin. In spatial distribution, the overall trend of Nanting River Basin ecological restoration potential shows that the western area is in high level and the eastern area is in low level, that the West and South is in high or higher level of recovery, while the central and eastern regions along the river in the middle, is in lower or low level of resilience; Meanwhile the distribution feature is very obvious in main watershed of rivers. In addition, the study of ecological restoration and reconstruction in Nanting River Basin also provide basis for decision making.
出处
《生态经济》
CSSCI
北大核心
2015年第10期116-120,共5页
Ecological Economy
基金
云南省科技计划项目(2012CA015
2012CA024)
