生态学杂志2017，Vol.36Issue(6)：1708-1717,10.DOI:10.13292/j.1000-4890.201706.009
高寒草甸植被-土壤系统对气候变暖响应的研究进展
Response of alpine meadow vegetation-soil system to climate change: A review
摘要
Abstract
Alpine meadows occur in low temperature environments and are highly sensitive to climate warming.The response of alpine meadows to climate warming will help predict the possible impact of future climate change on alpine ecosystems.To deepen understanding of the mechanisms of alpine ecosystem responses to climate change,from the individual plant level,the community level,and in relation to the physical,chemical and biological properties of soil,we reviewed the effects of warming on vegetation-soil system of alpine meadow.We identified uncertainties in recent studies on the influences of climate warming on alpine meadow ecosystems and set out guidelines for future research on these issues.Rising temperature can promote the growth and development of alpine meadow plants.Plant photosynthetic and respiration rates,biomass and species diversity increase under moderate warming.However,different plant species have different physiological structures and ecological niches,which interact with the amplitude and duration of increasing temperature.This can result in variations of plant photosynthesis and respiration intensity,biomass allocation and phenological phases.Excessive temperature rises tend to simplify alpine meadow ecosystems and ultimately cause a reduction in species diversity,which influence community succession.Rising air temperature increases soil temperature,reduces soil moisture and has a mixed effect on soil organic carbon.Under short-term warming,soil carbon and enzyme activity increase,raising the soil respiration rate.Over time,the soil respiration rate shows an adaptation to temperature rise.The response models to temperature vary according to their different components and the life processes of species in alpine meadow ecosystems.This leads to large uncertainties in the effects of climate warming on various components of plant and soil ecosystems in alpine meadows.We suggest to find a quantified threshold for the positive and negative effects on alpine meadow vegetation and soil system components under different amplitudes and durations of warming,and to address the response mechanisms from viewpoint of ecological-molecular biology.关键词
气候变暖/高寒草甸/植被/土壤Key words
climate warming/alpine meadow/vegetation/soil引用本文复制引用
马丽,徐满厚,翟大彤,贾燕燕..高寒草甸植被-土壤系统对气候变暖响应的研究进展[J].生态学杂志,2017,36(6):1708-1717,10.基金项目
国家自然科学基金项目(41501219)、山西省应用基础研究计划项目(2016021136)、山西省哲学社会科学“十二五”规划课题(晋规办字[2015]3号)、山西省高等学校科技创新项目(晋教科[2016]4号)、山西省高等学校重点学科建设项目(晋教研函[2016]4号)、太原师范学院研究生教育创新项目(SYYJSJC-1607)、太原师范学院大学生科技创新基金项目(SYTWKC-1610)资助. （41501219）
