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应用生态学报 ›› 2021, Vol. 32 ›› Issue (3): 1054-1060.doi: 10.13287/j.1001-9332.202103.020

• 研究论文 • 上一篇    下一篇

基于图论的两栖类生物栖息地网络规划——以黑斑侧褶蛙为例

张利, 何玲, 闫丰, 陈亚恒*   

  1. 河北农业大学国土资源学院, 河北保定 071000
  • 收稿日期:2020-10-18 接受日期:2021-01-05 出版日期:2021-03-15 发布日期:2021-09-15
  • 通讯作者: * E-mail: chenyaheng@126.com.
  • 作者简介:张利, 男, 1981年生, 博士, 副教授。主要从事景观生态规划和生态修复的研究。E-mail: zhang_li126@126.com
  • 基金资助:
    河北省科技计划项目(18227511D)资助

Amphibian habitat network planning based on the graph theory: A case study of Pelophylax nigromaculata

ZHANG Li, HE Ling, YAN Feng, CHEN Ya-heng*   

  1. College of Land Resources, Agricultural University of Hebei, Baoding 071000, Hebei, China
  • Received:2020-10-18 Accepted:2021-01-05 Online:2021-03-15 Published:2021-09-15
  • Contact: * E-mail: chenyaheng@126.com.
  • Supported by:
    Science and Technology Planning Program of Hebei Province (18227511D)

摘要: 生物多样性保护和生物栖息地网络建设是目前我国国土空间规划的重要内容,提升生物栖息地网络的景观功能连接度对生物多样性保护具有重要作用。目前,已有研究对生物栖息地网络规划进行了探索,但在实际规划层面仍缺乏可操作性强的技术方法支撑。本研究采用图论方法,聚焦国土空间规划中生物多样性保护和生态网络建设涉及的进行生物栖息地斑块重要性评价,以确定斑块优先保护次序;寻找最优新增斑块位置,以改善生物栖息地网络景观功能连接度;依据景观功能连接度的降低程度,判断建设项目的影响或评价规划新增建设项目的潜在影响3方面内容,在雄安新区两栖类生物黑斑侧褶蛙(Pelophylax nigromaculata)栖息地网络规划中进行应用研究。结果表明: 图论方法可以有效解决上述3方面的问题;本研究识别的5个最优新增黑斑侧褶蛙栖息地位置使栖息地网络整体景观功能连接度提升19%;通过评价G45高速公路对两栖类生物栖息地网络功能连接度的影响,找出了4个穿越通道设置以减弱G45高速公路的影响。

关键词: 景观功能连接度, 图论, 两栖类生物栖息地网络, 规划, 雄安新区

Abstract: Both biodiversity conservation and the construction of biological habitat networks are key components of territorial spatial planning in China. Improving the landscape functional connectivity of biological habitat networks plays a vital role in biodiversity conservation. Although biological habitat network planning is a hot topic in literature, there is still lack of operable technological and methodological support in practical planning. According to the graph theory, the following three different aspects of biodiversity conservation and ecological network construction should be addressed in territorial spatial planning. First, the importance of biological habitat patches should be evaluated to determine the priority of patch protection. Second, the best locations for adding new elements should be identified to increase landscape functional connectivity of biological habitat network. Third, the impacts of construction projects should be judged and the potential impact of new construction projects according to the reduction of landscape function connectivity should be evaluated. We applied such framework to the network planning of amphibian (Pelophylax nigromaculata) habitat in Xiong’an New Area. The results showed that graph theory approach effectively met the requirements of those three aspects. The identification of the five optimal locations of new habitats of P. nigromaculata improved the overall landscape functional connectivity of habitat network by 19%. Four optimal locations of cross passage were identified to reduce the impacts of G45 expressway by assessing its impacts on functional connectivity of the amphibian habitat network.

Key words: landscape functional connectivity, graph theory, amphibian habitat network, planning, Xiong’an New Area