Climate change effect on rate of erosion in Guizhou Province

The rate of erosion can be expected to change in correspondence to climate change.It is useful to analyze the response of soil erosion to global climate change and for karst regional planning of soil and water conservation strategy.This study was conducted to assess the potential effects of climate change on the rate of erosion in karst areas of Guizhou Province under A2 and B2 scenarios for the periods of 2020s,2050s and 2080s with the HadCM3.The results show a notable increase in the rate of erosion for both scenarios A2 and B2 across Guizhou Province except a small area of decrease in Zunyi,Tongren and North Qiandongnan from 1980s to 2020s.The increase in rate of erosion varies from region to region.The maximal range distributes respectively in Liupanshui and Qianxinan;Zunyi and north of Tongren;Panshui,Qianxinan,northeast of Zunyi,west of Bijie and Anshun under scenario A2 in the coming three periods.Under scenario B2 in the coming three periods the maximal range distributes respectively in Liupanshui and Qianxinan;south of Liupanshui,west of Qianxinan and northeast of Zunyi;north of Zunyi and a part area of Bijie.