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1990–2010年中国西北地区土地覆被数据集
A dataset of land cover in the northwest region of China from 1990 to 2010
: 2018 - 07 - 09
: 2018 - 07 - 10
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摘要&关键词
摘要:土地覆被变化是全球环境变化最直观的表现之一,同时土地覆被变化又对全球环境产生影响。对区域土地覆被变化状况的动态分析,是开展全球变化、生态系统评估以及人类与环境之间相互作用研究的基础性工作。本研究以中国西北地区(新疆维吾尔族自治区、青海省、甘肃省、宁夏回族自治区、陕西省以及内蒙古自治区的阿拉善盟)为研究区,通过收集区域1990年、2005年和2010年的Landsat TM以及2000年的Landsat ETM+遥感影像数据,基于eCognition软件平台,采用面向对象计算机自动分类与人工目视解译相结合的方法,提取研究区四期土地覆被数据。最后采用野外样本点调查、高分辨率影像识别和Google Earth的样本点识别对数据精度进行验证。本数据集可以作为区域生态环境评估的本底数据,也是区域规划、气候变化研究、环境建模以及生物多样性和生态系统碳储量研究的基础数据。
关键词:中国西北地区;土地覆被;面向对象分类方法;eCongnition;Landsat
Abstract & Keywords
Abstract: Land cover change is one of the most direct manifestations of global environmental change, and it also can influence the global environment. The dynamic analysis of regional land cover change is the basic work for the researches on the global change, ecosystem assessment and interaction between human and environment. In this study we take the northwest China as the research area, including the Xinjiang Uygur Autonomous Region, Qinghai Province, Gansu Province, Ningxia Hui Autonomous Region, Shaanxi Province and Alashan league in Inner Mongolia Autonomous Region, collect the Landsat TM image data in 1990, 2005 and 2010, and Landsat ETM+ image data in 2000, and extract the land cover data in four periods using the object-oriented computer automatic classification combined with artificial visual interpretation methods with the eCognition software platform. Finally, we use three methods to verify the data accuracy, including field sample point survey, high-resolution image recognition and Google Earth sample point identification. This dataset can be used as a background data of regional ecological environment assessment, and is also the basic data for the regional planning, climate change research, environmental modeling, biodiversity, and ecosystem carbon research.
Keywords: northwest region of China; land cover; oriented-object classification method; eCongnition; Landsat
稿件与作者信息
谢家丽
Xie Jiali
xiejl@lzb.ac.cn
颜长珍
Yan Changzhen
常存
Chang Cun
出版历史
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中国科学数据
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