Accounting for Ecological Compensation Standards in Watersheds Based on Value of Ecological Products—A Case Study of Nandu River Basin in Hainan Province
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Accounting for Ecological Compensation Standards in Watersheds Based on Value of Ecological Products—A Case Study of Nandu River Basin in Hainan Province
Bulletin of Soiland Water ConservationVol. 43, Issue 2, Pages: 267-276(2023)
Guo Qing, Wang Minying, Ge Chengjun, et al. Accounting for Ecological Compensation Standards in Watersheds Based on Value of Ecological Products—A Case Study of Nandu River Basin in Hainan Province[J]. Bulletin of Soiland Water Conservation, 2023, 43(2): 267-276.
DOI:
Guo Qing, Wang Minying, Ge Chengjun, et al. Accounting for Ecological Compensation Standards in Watersheds Based on Value of Ecological Products—A Case Study of Nandu River Basin in Hainan Province[J]. Bulletin of Soiland Water Conservation, 2023, 43(2): 267-276. DOI: 10.13961/j.cnki.stbctb.2023.02.031.
Accounting for Ecological Compensation Standards in Watersheds Based on Value of Ecological Products—A Case Study of Nandu River Basin in Hainan Province
[Objective] The usefulness of watershed ecological compensation standards for obtaining the value of ecological products was studied in order to provide theoretical support for effective construction of ecological watershed environments. [Methods] The study was conducted at the Nandu River basin in Hainan Province. The InVEST model and ArcGIS were combined to assess the major ecosystem services within the Nandu River basin based on the concepts of ecological damage compensation and ecological protection compensation. The ecological compensation standard was calculated from the perspective of changes in ecosystem services. [Results] ① Between 2015 and 2020
there was clear spatial heterogeneity in ecosystem services within the Nandu River basin
with higher capacity for water conservation services
sediment retention services
and water purification services in the middle and upper reaches of the Nandu River basin
and lower capacity in the lower reaches of the basin. ② Between 2015 and 2020
the value of water conservation services in the watershed ranged from 2.05×1010 yuan to 2.61×1010 yuan; the value of sediment retention services ranged from 1.91×109 yuan to 20.39×108 yuan; and the value of water purification services ranged from 3.78×107 yuan to 3.23×107 yuan. The value of the volume of change in water conservation services ranged from 1.15×109 yuan to 2.73×109 yuan; the value of the volume of change in sediment retention services ranged from 1.34×107 yuan to 1.04×108 yuan; and the value of the volume of change in water purification services ranged from 7.99×104 yuan to 4.01×106 yuan. ③ Based on the values of the three service functions
the ecological compensation standard for the Nandu River basin was 9.06×109 yuan
and the annual ecological compensation standard ranged from 1.18×109 yuan to 2.82×1010 yuan. [Conclusion] During 2015—2020
the value of ecosystem services in the Nandu River basin ranged from 2.25×1010 yuan to 2.82×1010 yuan. Between 2016 and 2020
the ecological compensation rate at the Nandu River basin ranged from 1.18×109 yuan to 2.84×109 yuan. The upper and middle reaches of the Nandu River basin were the core areas providing integrated ecosystem services.
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