Special Column:Celebration of the 70th Anniversary of IGSNRR, CAS
XIE Gao di, ZHANG Yi li, LU Chun xia, ZHENG Du, CHENG Sheng kui
It is of great significance to estimate ecosystem services value By using method proposed by Constaza et al (1997) and others,this paper calculated the unit area value of rangeland ecosystem services in terms of its biomass in China The results showed that the total value of annual rangeland ecosystem services in China was about US$149.79 billion,among which,the percentage of gas regulation took up 2 66%,that of disturbance regulation accounted for 16 07%,water regulation and water supply 14 44%,erosion control and sediment retention 9 08%,soil formation 0 31%,waste treatment 42 03%,pollination 7 83%,biological control 7 2%,refugia 1 08%,food production and raw material 22 26%,and recreation and culture 5 78% Owing to the integrated effects of biological communities distribution and ecosystem function of unit area,the contribution ratio of ecosystem services of various rangeland types different greatly The contribution ratio of marsh type made up 52 34%,the total contribution ratio of temperate steppe type,tropical herbosa type,tropical shrub herbosa type,lowland meadow type and alpine meadow type varied in the range from 5 03% to 7 74%,that of others types below 5%