Grassland deterioration in the source region of the Yangtze-Yellow rivers and integrated control of the ecological environment

Abstract

Black Barren indicates seriously deteriorated alpine meadow.It is a comprehensive sign of ecological environment deterioration in the Yangtze-Yellow rivers source region.Climatic warming is the principal cause of deteriorated alpine meadow in this region,and excessive grassland utilization enhances the expansion and damage of the Black Barren.Four recommendations are made for changing excessive grassland utilization,i.e.to combine ecological control with grazing adjustment,to carry out integrated control in the base of small river valleys,to apply 3S technology for accurate planning,and to introduce key technologies.Fencing natural grassland,warm pen construction,establishment of perennial pastures,use of solar energy are key techniques to be introduced soon.