数据集(库)目录

出版期刊|区域分类

2021年第12期
2019年第02期
数据详情

青海省玛沁县人工草地时空分布数据集(2017-2021)


朱杰1刘伟*2袁烨城1李睿3谭秋园1
1 中国科学院地理科学与资源研究所地理信息科学与技术全国重点实验室,北京1001012 国家林业和草原局林草调查规划院,北京1000133 生态环境部太湖流域东海海域生态环境监督管理局生态环境监测与科学研究中心,上海200125

DOI:10.3974/geodb.2026.08.03.V1

出版时间:2026年8月

网页浏览次数:49       数据下载次数:0      
数据下载量: 无      数据DOI引用次数:

关键词:

人工草地,三江源,人工草地识别指数,光学影像

摘要:

明确生态恢复中人工草地的空间分布,是评估高寒草地恢复工程及其潜在生态影响的重要基础。作者基于Google Earth Engine(GEE)云计算平台,利用2017-2021年多源光学遥感影像,构建生长初期(SE)与生长高峰期(GP)的双时相归一化植被指数比值,并据此计算人工草地识别指数(Artificial Grassland Detection Index,AGDI),研发得到青海省玛沁县人工草地时空分布数据集(2017-2021)。数据集内容包括:(1)研究区范围数据;(2)2017-2021年逐年人工草地空间分布数据,空间分辨率为30 m;(3)验证点数据,包括通过实地调查获得的地面真实点(GP)和在当地工作人员协助下通过目视解译获得的验证点(VP);(4)逐年新增人工草地面积数据。验证表明,2017-2021年平均总体精度(OA)为96.2%,Cohen’s kappa系数为0.91;人工草地类别的平均精确率、召回率和F1分数分别为89.6%、99.2%和94.0%。数据集存储为.shp、.tif和.xlsx格式,由30个数据文件组成,数据量为2.27 MB(压缩为1个文件,919 KB)。与该数据集相关的科学论文发表在《Ecological Indicators》2023年第154卷。

基金项目:

国家自然科学基金(U2243206);中华人民共和国科学技术部(2022YFC3800803)

数据引用方式:

朱杰, 刘伟*, 袁烨城, 李睿, 谭秋园. 青海省玛沁县人工草地时空分布数据集(2017-2021)[J/DB/OL]. 全球变化数据仓储电子杂志(中英文), 2026. https://doi.org/10.3974/geodb.2026.08.03.V1.
.

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数据下载:

序号 数据名 数据大小 操作
1 MQAG_2017-2021.rar 919.92KB
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