摘要
水库消落带土壤环境对水库水位变化的响应非常明显。通过分析大坝运行下水库消落带土壤理化性质、重金属、微生物特性和土壤侵蚀变化特征,总结水位波动对消落带土壤性质的影响过程与趋势。研究表明水库消落带土壤历经长时期干湿交替过程后,其物理性质发生较大改变,但具体变化过程和趋势仍存争议。土壤化学性质中,碳、氮和磷元素迁移转化趋势明显,但各不相同。土壤重金属元素时空分异特征改变。土壤微生物总体上呈减少趋势,并且在海拔梯度上差异显著。土壤侵蚀是消落带面临的主要环境问题。未来应采用物理模型方法,定量分析水位与土壤性质相关关系,并加强对西南高山峡谷区高坝大库消落带的研究。
It is obvious that the soil environment of water-level fluctuation zone response to the dam operation.The paper sum-merized the process and trend of soil characteristics affected by the water level fluctuation through analyzing the changes of soil physicochemical properties,heavy metal content,microbial characteristics,and soil erosion characteristics under the operation of dam.The research shows that soil physical properties have changed a lot since the soil experienced a long period of dry-wet alter-nation,but the specific changes of the process and trends are still controversial.The migration and transformation of soil chemical properties,such as carbon,nitrogen and phosphorus,have different but obvious trends.The temporal and spatial distribution of soil heavy metal elements has changed.Soil microorganisms generally show a decreasing trend after flooded,and it also shows obvious difference on elevation gradients.Soil erosion is the main environmental problem of water-level fluctuation zone.It is suggested that the physical models should be applied to quantitatively analyze the related relation between the soil properties and water level,and the water-level fluctuation zone of giant reservoirs in southwest China should be paid more attention.
作者
周紫璇
陆颖
钟荣华
毕晓静
袁旭
敦越
ZHOU Zixuan;LU Ying;ZHONG Ronghua;BI Xiaojing;YUAN Xu;DUN Yue(Institute of International Rivers and Eco-security,Yunnan University,Kunming 650091,China;2.Yunnan Key Laboratory of International Rivers and Transboundary Eco-security,Kunming 650091,China)
出处
《水文》
CSCD
北大核心
2019年第1期15-19,共5页
Journal of China Hydrology
基金
国家重点研发计划项目(2016YFA0601601)
云南省自然科学研究重点项目(2017FA021)
中国华能集团公司总部科技项目(HNKJ13-H17-03)
国家自然科学基金项目(41601296)
关键词
水库消落带
土壤环境
干湿交替
研究进展
土壤理化性质
water level fluctuation zone
soil environment
dry-wet alternation
research progress
soil physicochemical properties
