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Feasibility and technical design for enhancing habitat connectivity across two separated components in Shennongjia World Natural Heritage Site, China.

ZHOU You-bing, XU Wen-ting, ZHAO Chang-ming, SHEN Guo-zhen, XIONG Gao-ming, FAN Da-yong, XIE Zong-qiang*#br#   

  1. (State Key Laboratory of Vegetation and Environmental Change, Institute of Botany, Chinese Academy of Sciences, Beijing 100093, China).
  • Online:2017-10-10 Published:2017-10-10

Abstract: A key topic in biodiversity and ecosystem conservation is how to enhance the connectivity of isolated and fragmented habitats, enabling the effective exchange of wildlife to maintain ecosystem functionality. Shennongjia is a World Natural Heritage Site with an exceptionally rich biodiversity supporting unique ecological and biological processes, which provides an outstanding example of pristine subtropical highelevation ecosystem. Unfortunately, the Site is split into two parts. The distance separating the two parts ranges from 3.0 to 13.4 km, and a fenced National Road 209 runs through the jointed area between two parts. This study compiled previous literature and conducted additional field surveys to assess the feasibility of enhancing connectivity between the two components comprising Shennongjia Heritage Site, and proposed specific schemes for implementation. Vegetation covers over 97% of the jointed area, facilitating the development of wildlife corridors or stepping stones across this buffer zone. To achieve sufficient connectivity between the two parts to ensure consistent ecosystem functionality and resilience, we propose that two strip corridors, four stepping stones, four wildlife overpass crossings and 45% roadfence dismantlement will be required. With completion of this strategic scoping study, it is now crucial to establish a detailed timeframe to implement this initiative as soon as possible. Furthermore, we advocate that construction methods and materials should be responsible to the environment and be subject to continuous monitoring and regulation by the administrating authorities.