锡林河流域草地地境的划分及特征

本文在土壤与草地资源调查的基础上,本着综合性、广泛性、一致性的原则,依据地形、土属、植物群丛组把锡林河流域草地地境划分为:中丘—砂壤质碳酸盐黑钙土—线叶菊、大针茅旱生杂类草地境;中丘—中厚层黑钙土—羊草、杂类草地境;低丘—砂壤质暗栗钙土—大针茅、旱生杂类草地境;缓坡—厚层暗栗钙土—羊草、大针茅地境;平地-壤质栗钙土-大针茅地境;河漫滩-腐殖质沼泽土—苔草地境;阳坡—紧砂土—山杏、羊柴地境;阴坡—紧砂土—稠李、漏斗叶绣线菊地境;丘间低地—沙栗土—大针茅、糙隐子草地境等9个地境,并对每个地境的植被、土壤和地形特点进行了描述。

Classification of Range Sites in Xilin River Watershed

Through the surveys on soil and vegetation the principles of syndrom,extensivity,consistency were used to devide the rangelands in Xilin River Watershed into 9 range sites: Mid-part of hill/ sand loam carbonate black chestnut soil/ Filifolium sibiricum Stipa grandis xeric forbs plant community range site,Mid-part of hill/mid-deep balck chestnut soil/Leymus chinensis forbs plant community range site,Low hill/sand loam dark chestnut soil/Stipa grandis xeric forbs plant community range site,Slight slope/deep dark chestnut soil/Leymus chinensis Stipa grandisplant community range site, Plain/loamy chestnut soil/Stipa grandisplant community range site,Flood land/humus bog soil/Carex korshinskyiplant community range site,South slope/tight sand soil/Prunus ansu-Hedysarum leaveplant community range site,North slope/tight soil/Prunus padus Spiraea aquilegifoliaplant community range site,and lowland/chesrnut sand soil/Stipa grandis Cleistogenes squarrosaplant community range site.