Identifying multispecies dispersal corridor priorities based on circuit theory: A case study in Xishuangbanna, Southwest China  

基于电流理论识别多物种扩散廊道的优先度——以西南西双版纳为例（英文）

作　　者：YIN Yijie LIU Shiliang SUN Yongxiu ZHAO Shuang AN Yi DONG Shikui 尹艺洁;刘世梁;孙永秀;赵爽;安毅;董世魁;Ana COXIXO(State Key Laboratory of Water Environment Simulation, School of Environment, Beijing Normal University)

机构地区：[1]State Key Laboratory of Water Environment Simulation, School of Environment, Beijing Normal University

出　　处：《Journal of Geographical Sciences》2019年第7期1228-1242,共15页地理学报（英文版）

基　　金：National Natural Science Foundation of China,No.41571173;National Key Research and Development Project of China,No.2016YFC0502103

摘　　要：Ecological corridor networks can efficiently improve regional landscape connectivity. Corridors for multiple faunal species movements are receiving increasing attention and graph theory is considered a promising way to explore landscape connectivity. In Xishuangbanna, the circuit theory was applied to explore the corridor networks for biodiversity for the first time. In addition, disturbances caused by the road network and the protection efficiency of National Nature Reserves and planned area for corridors were evaluated. Results indicated that the regional corridor networks could be estimated using a modified circuit method and Zonation model. Spatially, the key corridors were concentrated in the central-western, southeastern and northern regions. We detected 66 main intersections between key corridors and the road buffer. Of these points, 65% are forest, 23% grassland and 12% farmland. More than half of the area of National Nature Reserves constituted the top 50% of the corridors, and the planned corridor areas could efficiently protect some key corridors. However, these reserves only protected about 17% of regional key corridors, and the corridor conservation area in the western and northern regions were absent. The issues addressed in our study aided in the elucidation of the importance of regional landscape connectivity assessments and operational approaches in conservation planning.Ecological corridor networks can efficiently improve regional landscape connectivity. Corridors for multiple faunal species movements are receiving increasing attention and graph theory is considered a promising way to explore landscape connectivity. In Xishuangbanna, the circuit theory was applied to explore the corridor networks for biodiversity for the first time. In addition, disturbances caused by the road network and the protection efficiency of National Nature Reserves and planned area for corridors were evaluated. Results indicated that the regional corridor networks could be estimated using a modified circuit method and Zonation model. Spatially, the key corridors were concentrated in the central-western, southeastern and northern regions. We detected 66 main intersections between key corridors and the road buffer. Of these points, 65% are forest, 23% grassland and 12% farmland. More than half of the area of National Nature Reserves constituted the top 50% of the corridors, and the planned corridor areas could efficiently protect some key corridors. However, these reserves only protected about 17% of regional key corridors, and the corridor conservation area in the western and northern regions were absent. The issues addressed in our study aided in the elucidation of the importance of regional landscape connectivity assessments and operational approaches in conservation planning.

关 键 词：circuitscape PRIORITY ranking landscape connectivity UNBIASED current density map 

分 类 号：P[天文地球]