Study On The Productive And Ecological Efficiency Of Planted Grassland In The Fore Period Settlement For Herdsmen

In the pasturing area, although herdsman have already practiced to settle down, they can not real attain the combination of agriculture and husbandry, the short of grass is still seriously baffling the development of the grassland-husbandry, and still make the ecosystem environment suffer to break seriously at the same time .The research, which was conducted in Ashili Kazak nationl township of Changji City,a typical place of Northern Slope in Tianshan Mountain in Xinjiang ,studies the productive condition of forage and livestock, the conversation condition of material and energy, and suggested an optimized model of artificial grassland with the principle of high efficient of energy-material recycle and linear programming. The study shows that after installing the optimized model the system produced tremendous productive and ecological efficiency :The carrying level of whole year housing breeding amount and the energy conversation have been greatly increased(the carrying level increases from 0.43sheep unit/ hm2 to 33.85 sheep unit/ hm2;A: output net energy of animal production/input general energy of concentration ,forage and pasture ,B: output net energy of pasture increase from 1.68% and 2.60% at present to 1.86% and 2.89%, respectively);Personal income increases from ?702 at present to ?486; Reduces the demands for natural grassland resources and protects ecological environment.