Spatial and Temporal Change of Habitat Quality of Poyang Lake Basin in China at Small Watershed Scale and Its Multidimensional Response to Landscape Pattern

作     者：BI Manyu ZHONG Yexi XIAO Zeping FENG Xinghua MA Hongzhi BI Manyu;ZHONG Yexi;XIAO Zeping;FENG Xinghua;MA Hongzhi

作者机构：School of Geography and EnvironmentJiangxi Normal UniversityNanchang 330022China Key Laboratory of Poyang Lake Wetland and Watershed Research Ministry of Education(Jiangxi Normal University)Nanchang 330022China 

出 版 物：《Chinese Geographical Science》 (中国地理科学（英文版）)

年 卷 期：2023年第33卷第3期

页      面：565-582页

核心收录：

学科分类：0830[工学-环境科学与工程（可授工学、理学、农学学位）] 08[工学] 0834[工学-风景园林学（可授工学、农学学位）] 

基　　金：Under the auspices of National Natural Science Foundation of China(No.41961043,42001189) Graduate Innovation Fund in Jiangxi Province(No.YC2021-S230,YC2021-B059)。 

主　　题：landscape watershed Spatial 

摘      要：The health and function of ecosystems are largely determined by the quality of habitat,and the optimal regulation of landscape patterns has become an important way to improve regional habitat quality.This article takes the Poyang Lake Basin of China as a case,reveals the spatial and temporal change of its habitat quality at the small watershed scale,and attempts to examine the multidimensional response of habitat quality to landscape pattern changes with respect to landscape compositions and landscape configuration.The results show:1)from 2000 to 2020,the overall landscape fragmentation of the basin decreased,the landscape aggregation in the central small watersheds changed significantly,and the spatial distribution of landscape elements in the central and southern small watersheds were relatively homogeneous.2)The overall habitat quality of the Poyang Lake Basin is at a middle to high level,with significant spatial differentiation,showing the distribution characteristics of‘high in the periphery,low in the center,high in the south and low in the north’.3)Both landscape compositions and landscape configurations influenced habitat quality,but there were obvious differences in the response degree.From the landscape composition and configuration dimension,the influence of landscape composition on habitat quality was greater than that of landscape configuration;from the multilevel landscape configuration dimension,compared to landscape level,landscape configuration at the class level impacted habitat quality more deeply.To the end,this article proposes a differentiated regulation strategy for habitat quality conservation in small watersheds from the perspective of landscape patterns to improve the ecological service level of Poyang Lake Basin.