全域土地综合整治背景下乐平市生态安全格局构建与优化研究  

Construction and Optimization of Ecological Security Pattern under the Background of Land Comprehensive Improvement across the entire Region in Leping

作　　者：向文武 蔡海生[1,2,3,4] 张学玲[1,2,3,4] 查东平 XIANG Wenwu;CAI Haisheng;ZHANG Xueling(Research Base for Natural Resource Utilization Technology and Management Innovation in Jiangxi Province,Jiangxi Agricultural University,Nanchang,Jiangxi 330045,China;Key Laboratory of Poyang Lake Watershed Agricultural Resource and Ecology of Jiangxi Province,Jiangxi Agricultural University,Nanchang,Jiangxi 330045,China;Key Laboratory of Poyang Lake Watershed Ecology of Nanchang City,Jiangxi Agricultural University,Nanchang,Jiangxi 330045,China;Research Center for Se-rich Agricultural Industry Development,Jiangxi Agricultural University,Nanchang,Jiangxi 330045,China)

机构地区：[1]江西农业大学江西省自然资源利用科技与管理创新研究基地,江西南昌330045 [2]江西农业大学江西省鄱阳湖流域农业资源与生态重点实验室,江西南昌330045 [3]江西农业大学南昌市鄱阳湖生态重点实验室,江西南昌330045 [4]江西农业大学富硒农业产业发展研究中心,江西南昌330045

出　　处：《中国水土保持》2023年第7期5-10,62,I0007,共8页Soil and Water Conservation in China

基　　金：国家自然科学基金项目(31660140);江西省高校人文社科重点研究基地项目(2018-32);江西省自然资源权益与储备保障中心项目(QY20220084)。

摘　　要：全域土地综合整治对于促进耕地保护、实现土地集约节约、改善区域生态环境具有非常积极的作用。乐平市是江西省全域土地综合整治试点,为实现对矿产资源型地区生态安全格局构建与优化的目标,运用形态学空间格局分析法(MSPA)、景观连通性指数提取生态源地,通过最小累积阻力模型(MCR)和重力模型提取生态廊道和节点,分析区域生态安全格局现状并探索乐平市生态安全格局优化方案。结果表明:乐平市有生态源地19处、生态廊道74条、生态节点44个,呈现地区不均匀分布的特点;生态安全水平总体上不高,生态网络连通性一般,生态阻力大;优化后的生态安全格局新增生态源地9处、生态廊道19条、生态节点7个,形成了“一轴三带三区”的战略布局。Land comprehensive improvement across the entire region has a positive influence on promoting cultivated area protection,achieving land intensive and saving use,improving regional ecological environment.Leping is the experimental city of land comprehensive improvement across the entire region in Jiangxi Province.To achieve the goal of construction and optimization of ecological security pattern in mineral resource-based region,the paper extracted ecological functional areas based on the morphological spatial pattern analysis(MSPA)and landscape connectedness index and ecological corridors and nodes based on the minimum cumulative resistance(MCR)and the gravity model to analyse ecological security pattern condition and explore ecological security pattern optimization scheme.The outcomes show that a)there are 19 ecological functional areas,74 ecological corridors and 44 ecological nodes,presenting uneven distribution characteristic;b)the overall level of ecological security is not high,and the level of ecological network connectedness is general,and ecological resistance is high;c)optimized ecological security pattern increases 9 ecological functional areas,19 ecological corridors and 7 ecological nodes,presenting the strategic layout of one axis,three belts and three zones.

关 键 词：MSPA MCR 重力模型 生态安全格局 全域土地综合整治 乐平市 

分 类 号：X826[环境科学与工程—环境工程]