三江源区高寒草地生态恢复措施及效果评价
Ecological protection,restoration construction measures and effect evaluation of alpine grassland in headwater regions of Three Rivers in China
赵玲慧 1王文颖 2李文龙 3徐仁飞1
作者信息
- 1. 青海师范大学生命科学学院,青海西宁 810016
- 2. 青海师范大学生命科学学院,青海西宁 810016;青海省人民政府-北京师范大学高原科学与可持续发展研究院,青海西宁 810016
- 3. 兰州大学草地农业科技学院,甘肃兰州 730000
- 折叠
摘要
基于文献计量法整理了 2005-2020年三江源区生态保护、恢复和建设的文献,梳理了三江源区主要生态保护、恢复和建设措施,提出恢复与建设效果评价指标体系,运用Meta分析评估不同恢复措施在高寒退化草地生态系统恢复中的效果.结果表明:高寒轻度退化草地最适合的技术措施是短期、中期围栏封育和N、P添加,不适合长期禁牧和大量施肥.中度退化草地最适合的技术措施是休牧、追加N、P或大量氮肥,不适合施有机肥或低氮肥.重度退化草地最适合的技术措施是休牧,不适合采用短期围栏封育和低氮量施肥.
Abstract
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.
关键词
三江源区/高寒草地/生态恢复/效果评价Key words
headwater regions of Three Rivers in China/alpine grassland/ecological protection/effect evaluation引用本文复制引用
出版年
2024
NETL
NSTL
万方数据