Value Assessment on Service Function of Forest Soil in Qinghai Province

doi:10.13466/j.cnki.lyzygl.2015.04.002

Abstract

Abstract: Based on the continuous forest inventory data,climate data,flux tower data and remote sensing data,the carbon cycling,water cycling and nutrient cycling of forest ecosystem were simulated by using Biome-BGC model in Qinghai province.Furthermore,the model validation was conducted by using the data including above-and belowground biomass,soil organic matter density,soil water content measured at forest plots in 2012 and 2013.So the substance quantity of the carbon sink functions,water resource and evapotranspiration in forest ecosystem from 1998 to 2012 were acquired.Meanwhile,the total substance quantity and total value of three ecological service functions involved from soil carbon storage,soil water conservation and soil nutrient supply in 2000,2005,2010 and 2012 were evaluated.The results showed that the mean value of forest soil services in Qinghai province was 8442287.22 × 10⁴ yuan/a,and the mean value was increasing at 0.25% speed each year.The service value of soil carbon storage accounted for 98.37% of the total value,whereas the ratio of value of both the soil water conservation and soil nutrient supply to the total value was less than 2%.The reason of increasing of soil carbon storage was mainly caused by the increase of carbon sforage of the forest litter,so we should pay attention to the conservation of forest litter.

Key words: forest soil, soil carbon storage, water conservation, service value, assessment

CLC Number:

S718.56

HUANG Guilin, LIU Jing, HOU Meng, CUI Xueqing, XU Shengwang. Value Assessment on Service Function of Forest Soil in Qinghai Province[J]. FOREST RESOURCES WANAGEMENT, 2015, 0(4): 7-12.

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