Ecological protection,restoration construction measures and effect evaluation of alpine grassland in headwater regions of Three Rivers in China
Based on the bibliometric method,the literatures on ecological protection,restoration and construction in the Three-River headwater regions of Qinghai Province from 2005 to 2020 were collected,and the main ecological protection,restoration and construction measures and their evaluation indexes were collected.The effects of each management measure on the alpine grassland ecosystem were analyzed by Meta-analysis method.The results showed that the best biomass recovery for mildly degraded grassland was short-term enclosure and N and P mixed addition,the best biomass recovery for moderately degraded grassland was resting grazing and N and P added,and the best biomass recovery for severely degraded grassland was resting grazing and N and P added(mixed addition).Resting grazing promoted the restora-tion of species richness in mildly degraded grassland,resting grazing,grazing prohibition and medium and long term enclosure promoted the restoration of species richness in moderately degraded grassland,and short and medium term enclosure,artificial supplementary sowing and grazing prohibition promoted the restoration of species richness in severely degraded grassland.
headwater regions of Three Rivers in Chinaalpine grasslandecological protectioneffect evaluation
NETL
NSTL
万方数据
