期刊论文

Construction of green space ecological network in Dongting Lake region with comprehensive evaluation method

中文

应用生态学报

1001-9332

2020

31

8

2687-2698

10.13287/j.1001-9332.202008.012

国家自然科学基金项目(51868008) 国家林业局“十三五”重点学科基金项目([2016]21) 湖南省自然科学基金项目(2018JJ3439)资助。

本校为第一机构

绿地生态网络对于改善区域生态空间破碎化、生物多样性降低、生态系统服务供需不平衡及保障区域生态安全具有重要意义。本研究以洞庭湖区为例,在3S技术支持下,从生态系统服务功能、潜在生物多样性、形态空间格局的角度综合评价和识别生态源地及计算栅格单元的基本生态阻力;利用夜间灯光指数修正基本生态阻力;运用最小累积阻力模型识别生态廊道;构建加权评价模型,对源地的聚合度、离散度及廊道的生态连接贡献度进行评价;利用结构特征指数对综合网络、"源-汇"潜在网络及规划网络进行对比分析和评价。结果表明:源地空间分布不均衡,林地、灌丛与水域三者面积之和占源地总面积的95.9%,位于研究区中部...

Green space ecological network is important for improving the fragmentation of regional ecological space,biodiversity loss,imbalance of supply and demand in ecosystem services,and ensuring regional ecology.With Dongting Lake region as an example,the ecological sources were evaluated and identified,and basic ecological resistance of grid element was calculated from the perspectives of comprehensive ecosystem service function evaluation,potential biodiversity comprehensive index evaluation and morphological spatial pattern analysis with the suppo...