泾川流域土地利用/覆被时间序列数据集(1976-2015)

Time Series Dataset of Land Use/Cover Change in the Jingchuan Basin

泾川流域指渭河的最大支流——泾河上游、泾川县城以上的河流汇水区。泾川流域土地利用/覆被分类体系由6个一级类与14个二级类组成,一级类包括林地、草地、湿地、耕地及人工表面等6类。基于1976-2015年多时相Landsat MSS/TM/OLI系列影像及eCognition、ENVI平台,采用决策树分类、面向对象基于知识规则集信息提取等方法,得到泾川流域时间序列土地利用/覆被变化数据集(1976-2015)。该数据集包括:(1)泾川流域边界数据;(2)1976-2015年10期(包括:1976、1991、1995、2000、2003、2005、2007、2010、2013、2015)土地利用/覆被分布数据,其中,1976年数据分辨率为60 m;2013、2015年数据分辨率为15 m;其他年份数据分辨率为30 m;(3)1976-1991、1991-2000、2000-2015年3期土地利用/覆被变化数据,其中2000-2015年数据分辨率为15m;其他2期数据分辨率为30m。数据集存储为.shp和.tif格式,由73个文件,数据量为252 MB(压缩为2个文件,数据量为6.83 MB)。

The Jingchuan basin refers to the river catchment area above Jingchuan county of the upper reaches of the Jing river, which is the largest tributary of the Wei river. The land use classification system of the Jingchuan basin consists of six first-level categories and 14 second-level categories. The first-level categories include forest land, grass land, wetland, cultivated land, artificial surface, and bare land. On the basis of multitemporal Landsat MSS/TM/OLI series images from 1976 to 2015 and platforms of e Cognition and ENVI, a time series dataset(1976-2015) of land use change in the Jingchuan basin was extracted using the methods of decision tree classification and object-oriented information extraction based on knowledge rule sets. The datasets include(1) Jingchuan basin boundary data;(2) land use spatial distribution dataset of ten periods from 1976 to 2015(including 1976, 1991, 1995, 2000, 2003, 2007, 2010, 2013, and 2015), the spatial resolution of which in 1976 was 60 m, 15 m in 2013 and 2015, and 30 m in other years;(3) land use change dataset during 1976-1991, 1991-2000, and 2000-2015 periods, the resolution of the latter is 15 m, and the resolution of the former two phases is 30 m. The datasets are archived in the format of.shp or.tif, and comprise 73 files with 252 MB(compressed into two files with 6.83 MB data size).