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Table 3 Ecosystem service value coefficients for each land use category obtained from equation ( 1 ) ($ per hectare per year * ; revised from Xie et al. 2003 )

From: Variation in ecosystem service values in response to land use changes in Zhifanggou watershed of Loess plateau: a comparative study

Ecosystem service Forest Grassland Cropland Water body Barren lands
Gas regulation 264 60 38 68 0
Climate regulation 204 68 67 662 0
Water supply 241 60 45 1353 2
Soil formation and retention 294 147 110 65 2
Waste treatment 99 99 124 1372 1
Biodiversity protection 246 82 54 188 26
Food 8 23 75 15 1
Raw material 196 4 8 3 0
Recreation and culture 97 3 1 373 1
Total 1648 546 521 4099 32
  1. *The coefficients are adjusted to 1990 $ according to the exchange rate between RMB Yuan and $.