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世界地质 2023, 42(4) 761-767 DOI: ISSN: 1004-5589 CN: 22-1111/P

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	生态敏感性
	随机森林算法
	延边地区
	本文作者相关文章
	姬冬梅
	李淑杰
	孙建华
	PubMed
	Article by Ji D
	Article by Li S
	Article by Sun J

基于随机森林算法的吉林省延边地区土地生态敏感性评价

姬冬梅1 , 李淑杰2 , 孙建华3

1. 吉林省国土资源调查规划研究院, 长春 130061;

2. 吉林大学地球科学学院, 长春 130061;

3. 吉林省地质环境监测总站, 长春 130061

摘要：以吉林省延边地区为研究对象, 运用随机森林分类方法训练数据并建立模型, 进行生态敏感性评价? 在选取的植被覆盖度? 坡度? 水环境? 人口密度和土地利用类型 5 个因子中, 水环境因子对延边地区生态敏感性影响程度最高, 植被覆盖度次之, 土地利用类型中等, 人口密度和坡度影响较小? 通过评价, 将延边地区生态敏感性划分极度敏感? 高度敏感? 中等敏感? 轻度敏感和不敏感 5 个等级, 占研究区总面积的比例分别为 40. 13% ? 44. 96% ? 8. 98% ? 4. 99% 和 0. 94% , 并在此基础上针对不同土地生态敏感性区域提出差别性的用地管控措施?

关键词：生态敏感性随机森林算法延边地区

Evaluation of ecological sensitivity in Yanbian area of Jilin Province based on random forset algorithm

JI Dongmei 1 , LI Shujie 2 , SUN Jianhua 3

1. Jilin Province Research Institute of Land and Resources Planning, Changchun 130061, China;

2. College of Earth Sciences, Jilin University, Changchun 130061, China;

3. Jilin Geological Environment Monitoring Center, Changchun 130061, China

Abstract: Taking the Yanbian area of Jilin Province as the research object, random forest classification was introduced to train data and establish a model for ecological sensitivity evaluation. Among the five factors selected, namely vegetation coverage, slope, water environment, population density, and land use type, water environment factor exhibited the most significant influence on ecological sensitivity in the Yanbian area, followed by vegetation coverage and land use type, with population density and slope demonstrating relatively minimal impact. Subse? quently, the ecological sensitivity in the Yanbian area was divided into five levels: extremely sensitive, highly sen? sitive, moderately sensitive, slightly sensitive, and insensitive, accounting for 40. 13% , 44. 96% , 8. 98% , 4. 99% , and 0. 94% of the total study area, respectively. Based on the evaluation, differential land use manage? ment measures were then proposed for specific ecologically sensitive areas.

Keywords: ecological sensitivity random forest algorithm Yanbian area

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