The Influence Of Environmental Changes To Grassland Changesin Chaganhada Town

The paper researched the rules of how the environmental factors and characteristics of vegetation changed with the changes of land use areas in Chagansumu,a small village in northern part of Inner Mongolia.It also tried to find the relationship between characteristics of vegetation and the environmental factors.The research is based on the analyses of changes such as how climates changed between 1954 and 2016,how the population,livestocks and land use areas changed between 1949 and 2016,and also how vegetations changed between 1964 and 2016.It can be concluded as the following:(1)The nature vegetation of this area is degradated seriously and the area became smaller and smaller.The nature vegetation coverage was reduced 51%(it is based on the data of nature vegetation coverage in 1964.The height decreased 3.12cm.Ten kinds of the plant species were reduced every square meter.Straw yield was reduced 810.77kg/hm2.The area of grass was reduced 3440hm2 and the area of nature forests were reduced 4756hm2.The land had been explored about 2594hm2 since 1958.The areas of the land were 2064.8hm2 in 2016,which shows that the areas of the land were reduced 529.2hm2(2)The climate became warmer and drier.The temperature increased 2.1? between 1950s and 2010s.The percipitation decreased 149.27mm.The evaporation was reduced 452.38mm.The evaporation is four times of percipitatoin these years.(3)There are more and more populations.The population increased 2501 and the families increased 1785 from 1949 to 2016.(4)The number of the livestocks were double times increased.The amount of the livestocks is increased from 5733 to 201326 between 1949 and 2016.(5)There is a negative correlation among the temputure,the number of families and the number of livestocks.