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《Research of Environmental Sciences》 2007-05
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Research on Dust Absorption Ability and Efficiency of Natural Vegetation in Mentougou District,Beijing

FENG Chao-yang~(1,2,3),GAO Ji-xi~3,TIAN Mei-rong~3,LIN Dong~(3,4), LV Shi-hai~3,LIU Shang-hua~(3,5)1.Institute of Mountain Hazards and Environment,Chinese Academy of Sciences,Chengdu 610041,China2.Graduate School,Chinese Academy of Sciences,Beijing 100049,China3.Institute of Ecology,Chinese Research Academy of Environmental Sciences,Beijing 100012,China4.College of Prataculture,Gansu Agricultural University,Lanzhou 730070,China5.College of Ecology and Environmental Science,Inner Mongolia Agricultural University,Huhhot 010019,China  
Dust absorption ability measurement of plant leaves were taken in summer 2006 in Mentougou District,Beijing.Those measured plant species were divided into four different vegetation classes,i.e.evergreen tree,deciduous broadleaved tree, deciduous shrub and herb.The average dust absorption of the same vegetation class represented its own ability.The dust absorption ability,amount and efficiency of overall natural vegetation were evaluated by RS and GIS means based on statistical vegetation data.The result showed that natural vegetation has obvious function on dust absorption.The dust absorption amount due to natural vegetation in Mentougou District is 39.47×(10~4 t/a),which brings a benefit of dust absorption of RMB 67.10×10~6 yuan.Shrub forest and deciduous broadleaved forest are the chief components of dust absorption ability and amount in study area;the dust absorption time of evergreen trees is longer than that of other plants,and thus their dust absorption amount and ability are somewhat increased.
【Fund】: 北京市科学技术委员会项目(D0605046040191)
【CateGory Index】: X173
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