生态学杂志2024，Vol.43Issue(6)：1833-1840,8.DOI:10.13292/j.1000-4890.202406.007
基于Biome-BGC模型的若尔盖不同沙地类型土壤水分植被承载力对气候变化的响应
Responses of soil water carrying capacity for vegetation in different sandy land types in Zoigê to climate change based on the Biome-BGC model
摘要
Abstract
Zoigê is a sensitive region to global climate change and a key ecological barrier for the upper reaches of the Yellow River and Yangtze River in China.However,soil water carrying capacity for vegetation(SWCV)in this area under global climate change is still unclear.We used the Biome-BGC model to simulate water use efficiency(WUE)of typical Hippophae rhamnoides-dominated vegetation on four types of sandy land(fixed sand land,semi-fixed sand land,shifting sand land,and exposure sand land)under various climate change scenarios from 2007 to 2021.The SWCV of H.rhamnoides on different types of sandy land was estimated based on the model.The results showed that under different climate scenarios,annual average WUE of H.rhamnoides ranked as exposure sand land＞fixed sand land＞semi-fixed sand land＞shifting sand land.Compared to current climate scenario,WUE was generally lower under future climate change scenarios.Under the scenario with increased temperature and precipita-tion,WUE was the lowest among all scenarios.SWCV was ranked as fixed sand land＞semi-fixed sand land＞shifting sand land＞exposure sand land under different climate scenarios.Compared to current climate scenario,the SWCV decreased on all types of sandy land under future climate change scenarios.Precipitation and temperature had a coupled effect on SWCV,with precipitation having a greater impact than temperature.By revealing the responses of SWCV on different sandy land types in the Zoigê area to climate change,this study provides guidance for ecological management and restoration of alpine sandy land in the region.关键词
Biome-BGC模型/气候变化/土壤水分植被承载力/若尔盖Key words
Biome-BGC model/climatic change/soil water carrying capacity for vegetation/Zoigê引用本文复制引用
张晨凤,贺丽,董廷发,邓东周,刘俊雁..基于Biome-BGC模型的若尔盖不同沙地类型土壤水分植被承载力对气候变化的响应[J].生态学杂志,2024,43(6):1833-1840,8.基金项目
省级林草财政专项科研项目(510201202109731)和西华师范大学博士启动基金(22E020)资助. （510201202109731）
