摘要
根据中国草地资源调查资料(农业部畜牧兽医司,1996)、中国草业统计(2009)和相关文献,在实地调查的基础上,以中国西南地区的天然草地资源、冬闲田资源、林间草地为研究对象,分析了中国西南地区的草地资源状况。结果表明,1)西南地区天然草地总面积35.58×106 hm2,占该区域土地总面积的32.59%,可利用草地面积29.04×106 hm2,各省可利用草地面积占天然草地面积比例都在70%以上;2)按照以服务畜牧业为主要原则,将天然草地资源划为4个区域:热带湿润灌草丛区、亚热带湿润灌草丛区、亚热带半湿润灌草丛区和高原温带湿润灌丛草甸区;3)西南地区岩溶面积达52.23×106 hm2,占土地面积的29.50%,共有292个岩溶县。石漠化面积达11.11×106 hm2,占岩溶面积的21.27%,有88个石漠化严重县;4)西南地区农闲田可利用面积为961.46×104 hm2,农闲田已利用面积为193.11×104 hm2,占农闲田可利用面积的20.09%。冬闲田种草已利用面积共计118.58×104hm2,占农闲田可利用面积的12.33%,占农闲田已利用面积的61.40%。5)西南地区灌丛、疏林草地面积合计为1 894.84×104 hm2,占草地面积的29.81%,占可利用草地面积的36.06%。
Based on a rangeland resources survey of China（Branch of Animal Husbandry and Veterinary Services affiliated to the Agricultural Department of China,1996）,grassland statistics of China（2009） related literature and field investigations,the natural grassland resources,winter-fallow paddy fields and forest grassland were studied.1） The natural grassland area in southwest China was 35.58×106 ha（32.59% of the total land area）.Available grassland area was 29.04×106 ha（70% of the total natural grassland area）.2） Grassland resources types were divided into four regions： tropical humid shrubby tussock region,subtropical humid tussock region,subtropical subhumid tussock region,temperate humid plateau tussock meadow region.3） The Karst area of southwest China was 52.23×106 ha（29.50% of the land area）,covering 292 counties.The rocky desertification area was 11.11×106 ha（21.27% of the karst region）,covering 88 severely rocky desertification counties.4） The available farming-fallow crop area was 961.46×104 ha,and the utilized farming-fallow crop area was 193.11×104 ha（20.09% of the available farming-fallow crop area）.Utilized winter-fallow paddy field grassland area totaled 118.58×104 ha（12.33% of the available farming-fallow crop area and 61.40% of the utilized farming-fallow crop area）.5） Shrubby tussock and sparse forest tussock of southwest China was 1 894.84×104 ha（29.81% of the grassland area and 36.06% of the available grassland area）.
出处
《草业学报》
CSCD
北大核心
2012年第1期75-82,共8页
Acta Prataculturae Sinica
基金
国家科技支撑项目(2011BAD17B01-05)
国家肉羊产业技术体系黔南综合试验站项目资助
关键词
西南地区
草地资源
天然草地
石漠化
冬闲田
southwest China
grassland resources
natural grassland
rocky desertification
winter-fallow paddy fields
