北京市六环内5年间隔30米分辨率土地覆盖数据集

为了评估北京城市绿色空间滞蓄雨水径流功能的空间分布及其动态变化，作者以北京市六环内2000、2005和2010年Landsat TM/ETM 影像数据作为基础数据源，采用2005年Quick Bird影像作为解译训练数据和验证样本，将北京市六环内TM/ETM影像进行监督分类，划为农田、森林、草地、水域、荒地和硬化地表5种土地覆盖类型，并开发了３０米分辨率的2000、2005、2010年度北京市六环内土地覆盖数据集。本数据集存储为.tif格式，压缩后数据量为1.03MKB。该数据集的相关研究成果已发表在《自然资源学报》2015年30卷第9期。

To evaluate the spatial distribution and dynamic changes of the stormwater runoff retention function of urban green spaces in Beijing, the authors used Landsat TM/ETM image data within the 6th Ring Road of Beijing in 2000, 2005 and 2010 as the basic data sources, and adopted 2005 QuickBird images as interpretation training data and validation samples. Supervised classification was performed on the TM/ETM images within the 6th Ring Road of Beijing, dividing them into five land cover types: farmland, forest, grassland, water body, wasteland and impervious surface, and a 30-meter resolution land cover dataset for the areas within the 6th Ring Road of Beijing in 2000, 2005 and 2010 was developed. This dataset is stored in .tif format, with a compressed data volume of 1.03 MKB. Relevant research findings of this dataset have been published in *Journal of Natural Resources*, Volume 30, Issue 9, 2015.