2010年中国1:10万生态系统类型空间分布数据

中国陆地生态系统类型空间数据在遥感解译获取的1：10万比例尺土地利用/土地覆盖数据的基础上，通过对各生态系统类型进行辨识和研究，经过分类处理形成多期中国陆地生态系统类型空间分布数据集。

中国陆地生态系统类型定义见下表，具体划分为7大生态系统类型：

（1）农田生态系统，主要包括土地利用/土地覆盖遥感分类系统中的水田11、旱地12；

（2）森林生态系统，主要包括土地利用/土地覆盖遥感分类系统中的密林地（有林地）21、灌丛22、疏林地23、其它林地24；

（3）草地生态系统，主要包括土地利用/土地覆盖遥感分类系统中的高覆盖度草地31、中覆盖度草地32、 低覆盖度草地33；

（4）水体与湿地生态系统，主要包括土地利用/土地覆盖遥感分类系统中的沼泽地64、河渠41、湖泊42、水库43、冰川与永久积雪44、 滩地46；

（5）荒漠生态系统，主要包括土地利用/土地覆盖遥感分类系统中的沙地61、戈壁62、盐碱地63；高寒荒漠67；

（6）聚落生态系统，主要包括土地利用/土地覆盖遥感分类系统中的城镇51、农村居民地52、工矿53

（7）其它生态系统，主要包括土地利用/土地覆盖遥感分类系统中的裸土地65和裸岩砾石地66。

The spatial dataset of Chinese terrestrial ecosystem types is developed based on the 1:100,000 scale Land Use/Land Cover (LU/LC) data obtained via remote sensing interpretation, through identifying and studying each ecosystem type and performing classification processing, ultimately forming multi-temporal spatial distribution datasets of Chinese terrestrial ecosystem types.

The definitions of Chinese terrestrial ecosystem types are shown in the table below, which are specifically divided into 7 major ecosystem types:

(1) Farmland Ecosystem: mainly includes paddy fields (11) and dry farmlands (12) in the LU/LC remote sensing classification system.
(2) Forest Ecosystem: mainly includes closed forest land (wooded land) (21), shrubland (22), open forest land (23), and other forest lands (24) in the LU/LC remote sensing classification system.
(3) Grassland Ecosystem: mainly includes high-coverage grassland (31), medium-coverage grassland (32), and low-coverage grassland (33) in the LU/LC remote sensing classification system.
(4) Water Body and Wetland Ecosystem: mainly includes marsh land (64), rivers and canals (41), lakes (42), reservoirs (43), glaciers and permanent snow (44), and floodplains (46) in the LU/LC remote sensing classification system.
(5) Desert Ecosystem: mainly includes sandy land (61), Gobi desert (62), saline-alkali land (63), and alpine desert (67) in the LU/LC remote sensing classification system.
(6) Settlement Ecosystem: mainly includes towns (51), rural residential areas (52), and industrial and mining lands (53) in the LU/LC remote sensing classification system.
(7) Other Ecosystems: mainly includes bare land (65) and bare rock and gravel land (66) in the LU/LC remote sensing classification system.