基于最小阻力面模型的墨江县生态安全格局构建与分析
Construction and Analysis of Ecological Security Pattern Based on Minimum Resistance Surface Model
杨天淼 1程静 1郭志东 2张宇笑3
作者信息
- 1. 云南省林业调查规划院,云南 昆明 650051
- 2. 云南水碧山青林业技术服务有限公司,云南 昆明 650051
- 3. 镇沅县勐大镇林业服务中心,云南 镇沅 665000
- 折叠
摘要
随着城市化的加速扩张,人类对环境的影响、资源的消耗已达到历史新高,环境污染的不断加剧成为影响生态安全的重要因素,构建生态安全格局已刻不容缓.为对进一步完善生态空间保护体系、优化国土开发与保护格局提供参考,基于最小阻力模型构建墨江县生态安全格局,通过专家打分法确定了生态源地影响因子、面积阈值、阻力面影响因子及其权重和各级阻力值,建立全县生态阻力面.通过ArcGIS Pro建立模型迭代,生成生态源地点到其他点的成本距离、成本路径,得出生态源地点之间基于生态阻力面的最小成本路径.最终得到了 10 个生态源地点、9 个生态重要战略节点和45 条潜在的生态廊道,建立了"源地—廊道"的生态安全格局.
Abstract
With the accelerated expansion of urbanization,human impact on the environment and re-source consumption have reached historical highs.The continuous intensification of environmental pollu-tion has become an important factor affecting ecological security,and it is urgent to build an ecological security pattern,to provide reference for further improving the ecological space protection system,opti-mize land development and protection pattern.This paper constructed the ecological security pattern of Mojiang County based on the minimum resistance model,and determined the impact factors of ecological source,area threshold,resistance surface and their weights and resistance values at all levels through ex-pert scoring method.Based on the minimum resistance model,the ecological resistance surface of the en-tire county was established,and the cost distance and cost path from the ecological source location to oth-er points were generated through ArcGIS Pro to obtain the minimum cost path based on the ecological re-sistance surface between the ecological source locations.Finally,10 ecological source sites,9 important ecological strategic nodes and 45 potential wildlife corridor were obtained,and the"source—corridor"ecological security pattern of Mojiang County was established.
关键词
最小阻力模型/生态阻力面/生态源地/生态廊道/生态安全格局/墨江县Key words
minimum resistance model/ecological resistance surface/ecological source location/eco-logical corridor/ecological security pattern/Mojiang County引用本文复制引用
基金项目
云南省科技厅2023年第二批科技成果转化专项资金(530000231100001753720)
出版年
2024
NETL
NSTL
万方数据