Study On The Optimized Model Of Grassland-Husbandry System In The Middle Part Of Northern Slope In Tianshan Mountain

Study on the Optimized Model part of Grassland-Husbandry System in the Middle part of Northern Slope in Tianshan Mountain Chen Fuhua (Grassland Resources and Ecology) Supervised by Thu Jinzhong Meng Lin ABSTRACT The grassland-husbandry system in the middle part of Northern slope in Tianshan Mountain in Xinjiang has the typical vertical grass distribution. The researching area has the same character from high mountain to plain . The problem of overgrazing and the insufficiency of forage cause the ecosystem unbalance, and so the energy conversation and economic effect are low. Through adjusting seasonal grassland and the ratio of forage, the energy conversation ( A: output energy of animal production / input general energy of concentration, forage and pasture ,B: output energy of animal production I input digestible energy of concentration forage and pasture )have been increased from 1.33% ,l.86% at present to 2.1% 3.0%, respectively. At the same time , the ecological environment is protected and can provide more forage to the husbandry sustainably. By extending summer pasture, autumn pasture and cropping area ,more sheep can be raised . More area should be cultured with forage. All these measures better the lives of herdsman , improve their personal income from Y 1317.46 at present to Y 2400.29 and Y 2378.1 in scheme II, Ill, respectively. So, the scheme II is the best.