[1]WANG Min,RUAN Jun-jie,YAO Jia,et al.Study on Soil Conservation Service of Ecosystem Based on InVEST Model—A Case Study of Ningde City, Fujian Province[J].Research of Soil and Water Conservation,2014,21(04):184-189.
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Research of Soil and Water Conservation[ISSN 1005-3409/CN 61-1272/P] Volume:
21
Number of periods:
2014 04
Page number:
184-189
Column:
Public date:
2014-08-28
- Title:
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Study on Soil Conservation Service of Ecosystem Based on InVEST Model—A Case Study of Ningde City, Fujian Province
- Author(s):
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WANG Min, RUAN Jun-jie, YAO Jia, SHA Chen-yan, WANG Qing
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Shanghai Academy of Environmental Sciences, Shanghai 200233, China
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- Keywords:
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Ningde; soil conservation; ecosystem services; integrated valuation of ecosystem services and tradeoffs; InVEST
- CLC:
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X171.1
- DOI:
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- Abstract:
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Based on the InVEST model, this paper analyzed the spatial characteristics of the soil conservation service of ecosystems and its impact factors in Ningde. The results showed that the amount of soil preserved by ecosystems was approximately 9.35×108 t/a, and the average capacity per unit area was 695.3 t/(hm2·a) for the entire region. With regard to the spatial pattern, it displayed the highest capacity in the central part and has the lowest capacity in the southwest, and the difference among the various regions was significant. The soil conservation capacity differed widely across various ecosystems, with a descending order from shrubs, forests, grasslands, dry lands, plantation, paddy lands, mangroves, swamp and city. Natural ecosystems were generally found to perform better than artificial ones in terms of conserving soil resources. Besides natural factors,social and economic development are important factors influencing soil conservation service. Indicators such as gross regional product per area, GDP of primary industry per area, population density, area ratio of farmland and transit network density, showed a negative correlation with soil conservation capacity, while area ratio of forests and grasslands showed a positive correlation with soil erosion rate. In conclusion, the social and economic development in Ningde might impair soil conservation service of ecosystems, as a result, tradeoffs should be made to keep development harmonious.