河北师范大学学报—

期刊信息

刊名：河北师范大学学报（自然科学版）Journal of Hebei Normal University (Natural Science)
主办：河北师范大学
ISSN： 1000-5854
CN： 13-1061/N
中国科技核心期刊
中国期刊方阵入选期刊
中国高校优秀科技期刊
华北优秀期刊
河北省优秀科技期刊

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北方农牧交错带景观生态风险评价及格局优化研究

杜华明1
2

（1.绵阳师范学院资源环境工程学院,四川绵阳621000； 2.生态安全与保护四川省重点实验室,四川绵阳621000）
DOI： 10.13763/j.cnki.jhebnu.nse.202205002

Study on Landscape Ecological Risk Assessment and Landscape Pattern Optimization of Farming-pastoral Ecotone in Northern China

DU Huaming1,2

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摘要/Abstract

摘要：

以北方农牧交错带景观生态风险为出发点,基于土地利用、土壤类型、DEM数据、道路、居民点等数据,运用ArcGIS空间分析技术,采用空间主成分分析法、加权叠加分析,得到北方农牧交错带景观生态风险空间分布图,并应用最小累积阻力模型构建生态廊道以优化生态网络结构.结果表明：北方农牧交错带低、较低、中、较高、高风险区的占比分别为0.07%,16.54%,64.32%,19.05%,0.02%;低、较低景观生态风险区主要位于农牧交错带东北段大部分区域、西北段局部区域；较高、高生态风险区主要位于农牧交错带的华北段和西北段部分.研究选取29个生态源地，构建51条生态廊道，识别出34个生态节点,形成“点线面”多层次生态网络优化格局.在今后的建设中,应强化生态源地的保护、加强生态廊道和生态节点的建设,以形成稳定的、物种丰富的生态系统.

Abstract：

Based on data of land use, soil type, DEM, road and residential area, landscape ecological risk and landscape pattern optimization are analyzed by using methods of spatial principal component analysis，weighted overlay analysis and minimum cumulative resistance model.Results show that the proportion of lowest, lower, medium, higher and highest risk areas in the farming-pastoral ecotone is 0.07%, 16.54%, 64.32%, 19.05% and 0.02% respectively. The lower and lowest landscape ecological risk areas are mainly distributed in the northeast part of the ecotone and local area in the eastern part of the northwest.The higher and highest ecological risk areas are mainly located in the northern and northwestern sections of the ecotone. In the future construction, the protection of ecological source area, the construction of ecological corridor and ecological node should be strengthened to form a stable and species-rich ecosystem.

关键词

关键词： 景观生态风险；空间主成分分析；加权叠加分析；最小累积阻力模型；北方农牧交错带

Key words： landscape ecological risk ; spatial principal component analysis ; weighted overlay analysis ; minimum cumulative resistance model ; northern farming-pastoral ecotone

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