Carbon Sequestration Potential of Vegetation and Soil of Degenerative Alpine Meadows in Southern Qinghai Province
Alpine meadow in the south and north of Qinghai Province are similar in terms of vegeta- tion, soil and climate. Moreover, the vegetation, as well as soil carbon density, has a perfect compa- rability between the south and north of the prov- ince. It is found that in the south alpine meadow vegetation degenerates seriously, and carbon den- sities in vegetation and soil show a gradual de- crease with aggravating degradation. Carbon den- sities in vegetation of mild, moderate, severe and extreme severe degeneration are 921. 281 gC.m 2, 809. 998 gC-m-2, 237. 974 kgC.m 2, 75. 972 gC. m 2, respectively, and 0-40-cm soil carbon densi- ties of them are 16. 760 kgC.m-2, 16. 145 kgC. m-2, 14. 360 kgC.m-2, 12. 945 kgC.m-2, respec- tively. In the north of the province, the meadow vegetation and soil carbon densities without degra- dation are 1 149. 327 gC.m-2 and 20. 305 kgC.m^-2, respectively. In the south of the province, the carbon densities of alpine meadows vegetation of the mild, moderate, severe and extreme severe degeneration are 228. 046 gC. m2, 339. 329 gC, m^-2, 911. 354gC.m-2 and1073.355 gC-m 2, re- spectively, more than that in the north of the prov- ince, and the 0 - 40 cm soil carbon densities of them are 3. 545 kgC.m 2, 4. 160 kgC.m-2, 5. 946 kgC.m-2 and 7. 359 kgC.m-2, respectively, more than that in the north of the province, which show that the southern alpine meadows vegetation has more potential for carbon sequestration. In the un- degraded grassland in the south, 0 - 20-cm soil carbon densities of the alpine meadow of the mild, moderate, severe and extreme severe degeneration can reach 1. 694 kgC.m-2, 2. 087 kgC.m-z, 3. 537 kgC. m-2 and 4. 282 kgC. m-2, respectively, which show a high carbon sink potential.
the south and north of Qinghai Provincealpine meadowvegetation/soil carbon densitycarbon sequestration potential
NETL
NSTL
万方数据
维普
