城市绿地土壤无机碳固存和损失的影响因素OA

Soil inorganic carbon(SIC)is a key component of the soil carbon pool,and its sequestration and loss have profound impacts on the global carbon cycling and climate change.With accelerating urbanization in China,urban ecosystems have become a focal point of ecological research.Urban green spaces,as integral components of urban ecosystems,are closely linked to soil carbon dynamics,climate regulation,and ecosystem services,and their response and feedback to urbanization will inevitably be the focus and priority of study.However,the understanding of SIC cycling in urban green spaces remains limited.This paper examined the potential impacts of human activities such as land management and construction on SIC in urban ecosystems.It systematically overviewed the following aspects:(1)sequestration,loss and influencing factors of SIC in urban green spaces under urbanization;(2)the driving effects of changes in soil physical properties,nitrogen inputs,p H,and salinity on the carbonate dissolution-precipitation balance of SIC in urban green spaces;(3)the impact of soil fauna and microbial communities on SIC formation process.Future research should focus on the driving mechanism of SIC dynamics under urbanization,so as to make up for the research deficiencies in inorganic carbon in urban green spaces and provide theoretical support for improving carbon cycling theory and optimizing ecosystem functions in urban ecosystems.