家畜生态学报2024，Vol.45Issue(5)：1-7,7.DOI:10.3969/j.issn.1673-1182.2024.05.001
青藏高原高寒草地生态系统碳平衡对放牧强度的响应
Response of Carbon Balance to Grazing Intensity in Alpine Grassland Ecosystem of the Qinghai-Tibet Plateau
摘要
Abstract
The Tibetan Plateau has the world's most extensive alpine grassland and a long history of grazing that dates back thousands of years.The unique alpine environment conditions make it more sensi-tive to external disturbances.Although many studies have been conducted on the carbon cycling of alpine grassland ecosystems on the Qinghai-Tibet Plateau,how grazing,especially grazing intensity,affects the carbon balance of alpine grassland still needs further studies and clarification.This paper reviews the re-sponse of carbon balance of alpine grassland ecosystem to different grazing intensities on the Qinghai-Tibet Plateau based on four grazing intensities,namely,fence grazing,light grazing,moderate grazing and heavy grazing.The results showed that the change of grazing intensity indirectly affected the carbon input and output of alpine grassland ecosystem by disturbing the plant-soil interface,and further affected the carbon balance.Due to grazing history,climate condition,the grassland types and other interference,the response of alpine grassland ecosystem carbon balance to grazing intensity is complicated,so it is necessary to adopt more flexible,specific and targeted measures to grazing management,which is of great signifi-cance to the rational grassland management decisions,and to the stability of the Qinghai-Tibet plateau al-pine meadow carbon balance.关键词
碳平衡/放牧强度/草地退化/土壤碳库/高寒草地生态系统Key words
carbon balance/grazing intensity/grassland degradation/soil carbon pool/alpine grass-land ecosystem分类
农业科技引用本文复制引用
李娜,郭同庆,张骞,徐田伟,徐世晓..青藏高原高寒草地生态系统碳平衡对放牧强度的响应[J].家畜生态学报,2024,45(5):1-7,7.基金项目
国家重点研发计划(2021YFD1600200) （2021YFD1600200）
青海省自然科学基金(2019-ZJ-974Q) （2019-ZJ-974Q）
第二青藏高原综合科学考察研究(2019QZKK040104) （2019QZKK040104）
中国科学院西部之光创新团队项目(CASLWC-2021) （CASLWC-2021）
