[1]LIU Xiaona,PEI Sha,CHEN Long,et al.Study on Soil Conservation Service of Ecosystem Based on InVEST Model in Mentougou District of Beijing[J].Research of Soil and Water Conservation,2018,25(06):168-176.
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Research of Soil and Water Conservation[ISSN 1005-3409/CN 61-1272/P] Volume:
25
Number of periods:
2018 06
Page number:
168-176
Column:
Public date:
2018-10-26
- Title:
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Study on Soil Conservation Service of Ecosystem Based on InVEST Model in Mentougou District of Beijing
- Author(s):
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LIU Xiaona, PEI Sha, CHEN Long, LIU Chunlan
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National Urban Environmental Pollution Control Engineering Research Center, Beijing Municipal Research Institute of Environment Protection, Beijing 100037, China
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- Keywords:
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soil conservation function; ecosystem services; InVEST model; land use and land cover change; Mentougou District
- CLC:
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S157.1;Q149
- DOI:
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- Abstract:
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Soil erosion caused by unreasonable land resources development has become a hotspot in mountain ecosystem. Based on temporal and spatial analysis of land use and land cover changes (LUCC) between 2005 and 2013, soil conservation service of ecosystem based on InVEST model in Mentougou District of Beijing, which was pure mountainous areas with ecological conservation and soil erosion characteristics, was analyzed quantitatively and evaluated dynamically. The results showed that: (1) the acreages of cultivated land, forestland, waterbody and unused land presented the decreasing trend in contrast to garden plot, grassland, construction land from 2005 to 2013; and the cultivated land was the fastest decreasing type, and was mainly converted into garden plot, forestland and construction land, respectively; meanwhile, the garden plot was the fastest growing type, and was mainly derived from cultivated land and forest land; (2) both the soil conservation ability and capacity of Mentougou ecosystem increased during 2005—2013, annual per unit area of soil conservation capacity raised from 87.41 t/hm2 to 113.56 t/hm2; total soil conservation increased by 3.773 8 million t, while reduced soil erosion was 0.234 2 million t; the capacity of soil conservation in northwest and northeast showed the upward trend, a decreasing trend in southwest, and unchanged in the eastern region; (3) the soil conservation capacity per unit area decreased in the order: forestland > grassland > unused land > construction land > cultivated land > garden plot > waterbody, between 2005 and 2013, soil conservation capacity per unit area of different land use and land cover types tended to increase; the unused land had the fastest growth rate in soil conservation function, while waterbody presented the slowest growth rate; in addition to cultivated land, the total amount of soil conservation of other types showed the increasing trend.