基于熵权法的昌江县生态脆弱性研究

Research on Ecological Vulnerability of Changjiang County Based on Entropy Weight Method

基于熵权法构建了昌江县生态脆弱性评价体系,评估其生态脆弱性,结果表明:昌江县的地形分布存在明显的南北差异,北部地形普遍较为平坦,人类活动频繁,林地景观和水域景观破碎度大,南部则反之,以山地为主生态系统的整体连通性较好;昌江县大部分行政区在三级脆弱区到五级脆弱区之间,在霸王岭林场、昌化镇和王下乡等林地景观和水域景观占比较大的行政区的生态脆弱性,因人为因素的影响难以复原而高于林地景观和水域景观占比较小的行政区,因此这些区域更需要加强保护力度。

This study is based on the entropy weight method to construct an ecological vulnerability assessment system to evaluate the ecological vulnerability of Changjiang County. The research results are as follows: the topographical distribution of this county has obvious north-south differences. Its northern part is generally flat and human activities are frequent. The forestland landscape and water landscape have a large degree of fragmentation.While the south is the opposite, the overall connectivity of the mountain-based ecosystem is better. Most of the administrative districts in Changjiang County are between the third-level fragile area and the fifth-level fragile area. The ecological vulnerability of the administrative areas such as Bawangling Forest Farm, Changhua Town and Wangxia Township etc. where the forestland landscape and water landscape occupies larger percentage is relatively difficult to rehabilitation due to human factors, and higher than those areas where the forestland landscape and water landscape occupies smaller percentage, so protection is more needed in these areas.