应用生态学报2018，Vol.29Issue(2)：635-642,8.DOI:10.13287/j.1001-9332.201802.013
1980-2015年南四湖流域景观格局及其脆弱性
Landscape pattern and its vulnerability of Nansihu Lake basin during 1980-2015.
摘要
Abstract
Landscape pattern and its vulnerability have direct impacts on ecological environment in the basin.In order to protect the ecological security in Nansihu Lake basin,we analyzed the changes of landscape pattern based on seven sets of land use data (1980-2015),with landscape adaptability index (LAI) and landscape sensitivity index (LSI) being used to build the landscape vulnerability index (LVI).The spatial distribution and changes of LVI were analyzed.Results showed that the percentage of arable land areas decreased by 4.6％ and construction land areas increased by 39.7％ from 1980 to 2015.Other land use types showed fluctuating changes.The areas of forest land,grassland,and unused land decreased while water area increased.The arable land was the dominant land use type from 1980 to 2015 in this area.The degree of fragmentation of arable land and water area in the basin increased,whereas other land use types decreased.The fragmentation of whole basin decreased,but connectivity among landscape types enhanced.The irregularity and complexity of landscape pattern decreased,but diversity and evenness of landscape pattern displayed an increasing trend.With respect to LVI in different periods,the eastern part of the basin was higher than the western part,while the northern part was higher than the southern part.The spatial distribution of LVI was related to topography,layout of landscape types and change of land use.The LVI of Nansihu Lake basin showed a decline trend during 1980-2015.In the eastern part of the basin,higher level of LVI gradually dispersed and was replaced by lower level.In the northwest,the recovery of LVI was obvious.In the south and southwest parts,LVI was consistently low.关键词
景观格局/景观格局脆弱度/南四湖流域Key words
landscape pattern/landscape pattern vulnerability/Nansihu Lake basin.引用本文复制引用
徐燕,孙小银,张大智,单瑞峰,刘飞..1980-2015年南四湖流域景观格局及其脆弱性[J].应用生态学报,2018,29(2):635-642,8.基金项目
本文由教育部人文社科项目(14YJCZH138)、国家自然科学基金项目(41471389)、山东省中青年科学家奖励基金项目(BS2013NY009)和山东省高校科技计划项目(J13LF02)资助 This work was supported by the Humanities and Social Science Project of the Ministry of Education (14YJCZH138),the National Natural Science Foundation of China (41471389),the Excellent Young and Middle-aged Scientist Reward in Shandong Province (BS2013NY009),and the Science and Technology Research Plan of College in Shandong Province(J13LF02). （14YJCZH138）
