RESEARCH ON THE SPAIOTEMPORAL VARIATIONS OF CARBON STORAGE AND CARBON SEQUESTRATION IN THE GRASSLAND ECOSYSTEM OF THE QINGHAI LAKE BASIN FROM 2000 TO 2022
The Qinghai Lake Basin,located in the northeastern part of the Qinghai-Tibet Plateau,is an essential barrier for maintaining the ecological balance in the region.By utilizing mODIS NPP long-term remote sensing data,combined with soil organic carbon data,the carbon storage per unit area of the grassland ecosystem in the Qinghai Lake Basin and its spatiotemporal variation characteristics from 2000 to 2020 were analyzed.Additionally,based on MODIS GPP data and a grassland ecosystem respiration estimation model,the carbon sequestration per unit area of the grassland ecosystem and its change characteristics were statistically analyzed.The results indicate:(1)The total carbon storage of the grassland ecosystem in the Qinghai Lake Basin is349.96Tg,with a unit area carbon storage of 13.83 kg·m-2,showing a zonal characteristic and radiating distribution pattern.(2)Over the past 21 years,the multi-year average carbon sequestration of the grassland ecosystem in the Qinghai Lake Basin is 17.14 Tg,with a unit area carbon sequestration rate of 0.16kg·m2·a-1,indicating that the grassland ecosystem in this area acts as a carbon sink.
Qinghai Lake BasinGrassland ecosystemCarbon storageCarbon sequestrationCarbon sink
NETL
NSTL
万方数据
