地质通报2024，Vol.43Issue(2)：463-473,11.DOI:10.12097/gbc.2022.07.034
基于"源-汇"理论构建农林交错的县域景观生态修复格局——以鄂伦春旗为例
Constructing a county-level landscape ecological restoration pattern of agricultural and forestry interlacing based on the"Source-Sink"theory:A case study of Oroqen Banner
摘要
Abstract
This study focuses on Oroqen Banner as the research subject and utilizes the"source-sink"theory and the Minimum Cumulative Resistance model(MCR)to establish a landscape ecological restoration pattern in the region.By employing the third national land survey vector data and conducting analysis and calculations through ArcGIS software,the study constructs and discusses the ecological restoration pattern in Oroqen Banner.The identification of source and sink landscapes,along with the analysis of resistance surfaces for different types of source landscapes,allows for the delineation of a 5-level ecological functional zoning.Moreover,a spatial restoration sequence is proposed for the restoration areas.The results indicate that the forest source landscape covers an area of 28054.2 km2 in the study area,while the grassland source landscape spans 2912.9 km2,and the water source landscape occupies 141.4 km2.These source landscapes account for 85.58%of the total area of the banner,demonstrating a generally favorable ecological function and quality.However,the southern part of the banner is primarily characterized by cultivated land,exhibiting significant disparities in landscape ecological security compared to the northern part.Based on the severity of ecological issues and the distribution range of various restoration areas,the restoration sequence is as follows:forest and grassland restoration important area>forest and grassland restoration important area>grassland and water restoration important area>forest and water restoration important area>grassland restoration important area>water restoration important area>forest restoration important area.In contrast to previous research,this study innovatively proposes the distribution range of ecological core areas and key ecological restoration areas within the study area.Additionally,it constructs a"point-line-surface three-in-one"three-dimensional spatial corridor and a"four-horizontal and two-vertical"ecological restoration pattern,serving as an exemplary instance for the ecological environment protection system in underdeveloped county-level areas dominated by forest and cultivated land.The findings have broad applicability to county-level areas with abundant ecological protection areas and a complex mixture of agricultural and forestry landscapes.Accordingly,it will provide valuable references for regional ecological protection and the establishment of ecological restoration patterns in spatial planning and control.关键词
"源-汇"理论/最小累计阻力模型/生态修复格局/鄂伦春旗/县域/内蒙古Key words
source-sink theory/the minimum cumulative resistance/ecological restoration pattern/elunchun county/Orogen Banner/Inner Mongolia分类
资源环境引用本文复制引用
杜银龙,王永亮,李瑞嘉,李永春,陈国栋,邰苏日嘎拉,张栋,杜雨春子..基于"源-汇"理论构建农林交错的县域景观生态修复格局——以鄂伦春旗为例[J].地质通报,2024,43(2):463-473,11.基金项目
中国地质调查局项目《松嫩平原北缘鄂伦春地区黑土地地表基质调查》(编号:DD20220860) （编号:DD20220860）
