主办单位:中国气象局沈阳大气环境研究所
国际刊号:ISSN 1673-503X
国内刊号:CN 21-1531/P

Journal of Meteorology and Environment ›› 2019, Vol. 35 ›› Issue (3): 68-78.doi: 10.3969/j.issn.1673-503X.2019.03.009

• ARTICLES • Previous Articles    

Effects of climate change on emission rate of dust of grassland soil by wind erosion in Bashang area,Hebei province

WU Jian-guo1, XU Tian-ying1,2   

  1. 1. Chinese Research Academy of Environmental Sciences, Beijing, 100012, China;
    2. College of Forestry, Gansu Agricultural University, Lanzhou 734000, China
  • Received:2017-12-08 Revised:2018-04-03 Published:2019-06-28

Abstract: Based on the data of RCP2.6,RCP4.5,RCP6.0 and RCP8.5 climate change scenarios produced by the global climate model of NorESM1-M and calculation method of dust emission by soil wind erosion recommended by former Ministry of Environmental Protection of People's Republic of China,the effects of future climate change on the seasonal and annual emission rates of dust TSP (Total Suspended Particle),PM10 and PM2.5 by soil wind erosion from sandy loam,clay loam,loam,sandy loam,sandy soil and sandy soil grasslands in Bashang area of Hebei province were analyzed.The results show that the air temperature will increase and the annual precipitation and wind speed will obviously fluctuate with increasing and decreasing trends in Bashang area.Compared with the baseline scenario,the seasonal emission rates of TSP,PM10 and PM2.5 are 15%,47%,28% and 46% higher in spring,17%,54%,45% and 38% higher in autumn,36%,42%,39% and 44% lower in winter in RCP2.6,RCP4.5,RCP6.0 and RCP8.5 scenarios,respectively.In summer,the seasonal emission rates of TSP,PM10 and PM2.5 are 1% lower in RCP2.6 and are 14%,3% and 7% higher in RCP4.5,RCP6.0 and RCP8.5 scenarios than those in the baseline scenario,respectively.Under the background of future climate change,the annual emission rates of TSP,PM10 and PM2.5 by soil wind erosion will respectively increase 25%,54%,35% and 54% in RCP2.6,RCP4.5,RCP6.0 and RCP8.5 scenarios relative to those in the baseline scenario.Under the baseline and future climate change scenarios,the seasonal and annual emission rates of TSP,PM10 and PM2.5 by soil wind erosion and their differences are in the order from large to small by sandy loam,sandy soil,sandy loam,clay loam,clay and sand soil.The results suggest that the increase of the rate of dust by wind erosion in grassland soil in Bashang area of Hebei province will be caused by future climate change,but existing differences in different seasons and climate change scenarios.

Key words: Climate change, Grassland, Soil wind erosion, Dust emission, Bashang area

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