[1]LI Li,ZHU Wenbo,LI Yanhong,et al.Ecosystem Service Value Gains and Losses of Qihe River Basin Based on Topographic Gradient Characteristics[J].Research of Soil and Water Conservation,2019,26(05):287-295.
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Research of Soil and Water Conservation[ISSN 1005-3409/CN 61-1272/P] Volume:
26
Number of periods:
2019 05
Page number:
287-295
Column:
Public date:
2019-09-06
- Title:
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Ecosystem Service Value Gains and Losses of Qihe River Basin Based on Topographic Gradient Characteristics
- Author(s):
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LI Li, ZHU Wenbo, LI Yanhong, ZHU Lianqi, XU Shuaibo, FENG Xiaoyan
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College of Environment and Planning, Henan University, Kaifeng, Henan 475004, China
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- Keywords:
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mountainous river; land use/cover; relief amplitude; ecosystem service value
- CLC:
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X171;F301.2
- DOI:
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- Abstract:
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Ecosystem services have very significant impact on human life. Study of the value of ecosystem services is helpful to understand the changing process of ecosystem services. Based on the revised Chinese terrestrial ecosystem service value scale combined with the land use/cover data of the years of 2000 and 2015, was estimated ecosystem service value (ESV) of Qihe River basin, analyzed the basin ESV change from 2000 to 2015 according to the characteristics of terrain gradient, discussed space structure change of ecosystem service value with the variation of relief. The results show that:(1) from 2000 to 2015, the Qihe River Basin was dominated by woodland, grassland and cultivated land, with the largest decrease of cultivated land (29 671.64 hm2), the largest increase of grassland area (8 854.38 hm2), and the highest dynamic attitude of single unused land (632.14%); (2) ESV of the study area reduced by 0.14 billion in the period 2000-2015, the ESV of cultivated land in elevation 200~400 m classification declined significantly (44.646 4 million yuan), the ESV of water body in 400~600 m elevation increased greatly (23.548 8 million yuan), ESV of woodland with >35° slope declined significantly (42.93 million yuan), the most obvious ESV of cultivated land decreased by 37.2 million yuan in flat area, ESV of water body increased by 59.4 million yuan in micro-undulating area, ESV of woodland decreased by 54.92 million yuan in medium-undulating area, and gained 39.67 million yuan in micro-undulating area; (3) the value of individual ecosystem services is not consistent in the degree of increase or decrease in the topographic gradient, in which the largest increase in the value of ecosystem services results from water conservation, and the largest decrease contributes to soil formation and protection; (4) the value contribution level of each ecosystem service function to ecosystem service remains stable, the level decreases in the order:support service > regulation service > supply service > cultural service; the sensitivity indexes are all less than 1, indicating that the ecosystem service value is inelastic to the value coefficient, and the research results are robust.