| The value evaluation of natural grassland ecosystem has vital significance on the reasonable development and protection of natural grassland in Guizhou, especially on the the biggest ecological problem---rocky desertification. This article makes an evaluation on the function values of natural grassland ecosystem service in Guizhou province, according to ecological value assessment methods proposed by XIE Gao-di, ecological services value equivalency factor table of Chinese terrestrial ecosystemandthesurveyonnatural grass (20hm2)inGuizhouProvince.Theresultsshow that thetotalvalueof ecological services function of natural grassland type in Guizhou is 5.0061×108 dollars per year. The function value of ecological service of hilly grassland accounts for 42.42%of the total value, with 2.1238×108 dollars per year; the function value of ecological service of hilly shrub grassland accounts for 41.08%of the total value, with 2.0567×108 dollars per year; the function value of ecological service of hilly woodland accounts for 14.98%, with 7.5伊107 dollars per year; the function value of ecological service of mountain meadow accounts for 1.51%, with 7.56伊106 dollars per year. Hilly grass and hilly shrub grassland accounts for 83.50%of the total value, and thevalueof ecological serviceofsoil formationandprotectionaccountsfor27.19%,about1.361伊108 peryear. |
