| 陕北干旱区景观生态风险空间分异特征及驱动因素分析 |
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| 引用本文： | 钟祺康,王志一,王娜,郗富瑞.陕北干旱区景观生态风险空间分异特征及驱动因素分析[J].测绘通报,2022,0(7):100-106. |
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| 作者姓名： | 钟祺康 王志一 王娜 郗富瑞 |
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| 作者单位： | 1. 中南大学建筑与艺术学院, 湖南 长沙 410083;2. 中国地质环境监测院, 北京 100081 |
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| 基金项目： | 中国地质调查局地质调查项目(DD20221781);国家重点研发计划(2017YFB0503803) |
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| 摘 要： | 陕北黄土高原属于生态脆弱区,是国家生态修复重点项目区。本文以陕北榆林市2000—2020年3期土地利用数据为数据源,用网格法构建基于景观格局的综合生态风险指数模型,定量分析了榆林市景观生态风险时空分布,并采用地理探测器、R和Origin软件等工具定量分析了土地利用与生态风险的耦合关系。结果表明:2000—2020年该地区生态风险整体趋于下降,低生态风险区面积增加、高生态风险区面积逐渐较少且向西北方向偏移;中风险区域面积逐年增加,该区域仍存在较强潜在生态风险;在人类活动影响下的林地、草地面积变化,以及自然胁迫是驱动景观生态风险变化的主要因素。
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| 关 键 词： | 陕北榆林 景观生态 生态风险 空间分异 驱动因素 |
| 收稿时间： | 2022-03-22 |
| 修稿时间： | 2022-05-24 |
Spatial differentiation characteristics and driving factors of landscape ecological risk in arid area of northern Shaanxi |
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| ZHONG Qikang,WANG Zhiyi,WANG Na,XI Furui.Spatial differentiation characteristics and driving factors of landscape ecological risk in arid area of northern Shaanxi[J].Bulletin of Surveying and Mapping,2022,0(7):100-106. |
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| Authors: | ZHONG Qikang WANG Zhiyi WANG Na XI Furui |
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| Institution: | 1. School of Architecture and Art, Central South University, Changsha 410083, China;2. China Institute of Geo-Environment Monitoring, Beijing 100081, China |
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| Abstract: | The Loess Plateau in northern Shaanxi is an ecologically fragile area and a key national ecological restoration project area. Taking the land use data of Yulin city in northern Shaanxi from 2000 to 2020 as the data source, this paper uses the grid method to construct a comprehensive ecological risk index model based on landscape pattern, analyzes the spatial and temporal distribution of landscape ecological risk quantitatively in Yulin city, and uses geographic detectors, R and Origin software and other tools to analyze the coupling relationship between land use and ecological risk. The results show that: from 2000 to 2020, the ecological risk in this area tends to decrease as a whole, the area of low ecological risk area increases, the area of high ecological risk area gradually decreases and shifts to the northwest; the area of medium risk area increases year by year, and the area still exists strong potential ecological risks. Changes in woodland and grassland areas under the influence of human activities and natural stress are the main factors driving the changes in landscape ecological risks. |
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| Keywords: | Yulin northern Shaanxi landscape ecology ecological risk spatial differentiation driving factors |
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