Construction of an Ecological Network of Natural Reserves in Lancang River Basin, Yunnan Province

Guo Hanyueyang; Liu Jiawei; Chen Chunxu

doi:10.13961/j.cnki.stbctb.20230425.001

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Construction of an Ecological Network of Natural Reserves in Lancang River Basin, Yunnan Province

- Construction of an Ecological Network of Natural Reserves in Lancang River Basin, Yunnan Province
- Bulletin of Soiland Water Conservation Vol. 43, Issue 2, Pages: 193-201(2023)
- 作者机构：
  
  1. 西南林业大学园林园艺学院,云南,昆明,650233
  2. 云南师范大学地理学部,云南,昆明,650224
- 作者简介：
- 基金信息：
- DOI：10.13961/j.cnki.stbctb.20230425.001
  CLC： S76
- Published：2023
- 稿件说明：
移动端阅览
Guo Hanyueyang, Liu Jiawei, Chen Chunxu. Construction of an Ecological Network of Natural Reserves in Lancang River Basin, Yunnan Province[J]. Bulletin of Soiland Water Conservation, 2023, 43(2): 193-201.
DOI：

Guo Hanyueyang, Liu Jiawei, Chen Chunxu. Construction of an Ecological Network of Natural Reserves in Lancang River Basin, Yunnan Province[J]. Bulletin of Soiland Water Conservation, 2023, 43(2): 193-201. DOI： 10.13961/j.cnki.stbctb.20230425.001.

摘要

[目的] 构建云南省澜沧江流域自然保护地生态网络，为该流域的生态安全与保护提供科学依据。 [方法] 以云南省澜沧江流域为研究区，选取距水体距离、距建成区距离、植被覆盖度、土地利用、坡度、高程6个生态因子构建最小积累阻力模型，将流域内国家级、省级、市县级自然保护地作为生态源地，识别源与源之间的最小阻力路径作为潜在的生态廊道，在此基础之上识别生态节点与生态断裂点，以此构建出云南省澜沧江流域的生态网络。 [结果] 云南省澜沧江流域生态源地数量为43个，主要集中在流域中游与下游。共构建出67条生态廊道，与澜沧江主体水系重叠度达59%；在生态网络基础之上识别出20个生态节点与41个生态断裂点，为后期生态网络的优化与修复和区域道路建设提供参考依据。 [结论] 根据生态源地、生态廊道、生态网络分布特点，增加澜沧江上游、威远江流域、黑江、黑河流域等地生态源地的数量，提升罗闸河、黑河、黑江、南览河流域等地河流岸边的生境质量，以生态节点和生态断裂点生态化建设作为补充，形成完整的生态保护网络，缓解栖息地孤岛化问题，促进生态源地之间的物种流动，保护区域内的生物多样性。

Abstract

[Objective] The ecological network of Natural Reserves in Lancang River basin

Yunnan Province was constructed in order to providing a scientific basis for the ecological security and protection of the basin. [Methods] We constructed a minimum accumulation resistance model of six ecological factors (distance from water

distance from town

vegetation coverage

land use

slope

and elevation). In this model

the city and county-level nature reserves were considered to be the ecological sources. The ecological network of the Lancang River basin was constructed as the least resistance path between different sources

identified as the potential ecological corridor to detect the ecological nodes and ecological fracture points. [Results] A total of 43 ecological sources in the Lancang River basin (mainly in the middle and lower reaches of the basin) were constructed by using the model

with 67 ecological corridors overlapping the main water system of the Lancang River by 59%. Twenty ecological nodes and 41 ecological breakpoints were identified in the ecological network

and these will be used in the optimization and restoration plan of the ecological network and the construction of regional roads in a later period. [Conclusion] According to the distribution characteristics of ecological source areas

ecological corridors

and ecological networks

the number of ecological source areas in the upper reaches of the Lancang River

Weiyuan River basin

and other related areas should be increased. At the same time

the quality of habitats along river banks in the Lancang River basin should also be improved through the use of ecological construction that considers ecological nodes and ecological breakpoints so as to form a complete ecological protection network

alleviate the problem of islanding

and promote the flow of species between ecological sources.

关键词

Keywords

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