生态学报2024，Vol.44Issue(12)：5206-5218,13.DOI:10.20103/j.stxb.202308091718
基于InVEST-图论模型的西双版纳州亚洲象生境网络评价
Evaluation of Asian elephant habitat network in Xishuangbanna based on InVEST-Graph Theory model
摘要
Abstract
In the context of advancing biodiversity conservation efforts,the overlapping territories of Asian elephants and human activities have led to an increasing conflict between them.Optimizing species habitat networks can alleviate this contradiction from the source.This paper,taking Xishuangbanna as a case study,proposes a method for identifying and optimizing habitat networks based on the InVEST-Graph Theory composite model at the time of establishment of Asian Elephant National Park.Leveraging land-use data,incorporating insights into Asian elephant behavior and habitat preferences,the approach modifies habitat quality data through three critical factors:elevation,slope,and distance from water sources.Using Graphab software to identify potential habitat networks and combining the Minimum Cumulative Resistance Model concept with component analysis methods from landscape graph theory,this study quantitatively analyzes protection gaps within Xishuangbanna's national-level Asian elephant conservation area from the perspective of"source-corridor."It explores spatial layout optimization strategies and habitat classification protection strategies for the conservation area,with the aim of offering a perspective for the development of Asian Elephant National Parks and Xishuangbanna's territorial spatial planning.The results indicate that a total of 335 ecological source sites were identified in Xishuangbanna,covering a combined area of 4595.60 km2.Overall,high-quality habitats are relatively evenly distributed,with well-connected habitat networks concentrated in the northern and eastern regions.There is a significant ecological island phenomenon in the central B4 Menglun area,and the high-quality patches in the southwest are small and fragmented,lacking large contiguous habitats as core habitat areas.Regarding protection gaps,ecological source sites within the national-level conservation area account for only 31.68%of the total source site area,with large protection gaps concentrated in the northeastern part of the B3 Mengyang area.The optimized habitat network has the potential to establish a"B5-A-B3-B4-B1-B2"biological migration corridor,centered around the B3 Mengyang area and focusing on the national nature reserve.关键词
亚洲象栖息地/景观图论/生境质量评价/保护区缺口/西双版纳州Key words
Asian elephant habitat/landscape graph theory/habitat quality assessment/conservation area gaps/Xishuangbanna引用本文复制引用
魏雯,唐安琪..基于InVEST-图论模型的西双版纳州亚洲象生境网络评价[J].生态学报,2024,44(12):5206-5218,13.基金项目
国家自然科学基金项目(51868028) （51868028）
