生态学报2001，Vol.21Issue(4)：617-623,7.
内蒙古草地畜牧业可持续发展的生物经济原则研究
The biological-economical principle on sustainable development of grassland livestock in Inner Mongolia Steppe
摘要
Abstract
With a study of plant community succession on 5 stocking rates,herbage utilizational efficiency and risk-benefit balance,it is suggested the sustainable development should follow:(1)no degradational principle of rangeland,(2)the maximum herbage utilizational efficiency,(3)the risk-benefit balance,When stocking rate was no more than 2.67 sheep/hm2,the proportion of grasses and plant biodiversity index and evenness were increased based on Artemisia frigida and short-grass rangeland.The herbage utilizational efficiency of lamb and total liveweight gain were increased by 4.6 and 2.5 times in comparison with 4.5 year old adult wether.The average liveweight gain per hectare was maximum in the stocking rate of 5.33 sheep/hm2,but its benefit per hectare was less than that of the stocking of 4.00 sheep/hm2 and risk was larger under 6.0 RMB/kg of buying and selling price in 1993.
Overall,he grassland livestock can only develop sustainably based on no degradation of rangeland.And farmer can have more income and lower risk through increase herbage utilizational efficiency and improving management.关键词
内蒙古草原/草地畜牧业/可持续发展/生物经济原则分类
农业科技引用本文复制引用
汪诗平,王艳芬,陈佐忠..内蒙古草地畜牧业可持续发展的生物经济原则研究[J].生态学报,2001,21(4):617-623,7.
