水土保持研究2018，Vol.25Issue(3)：210-216,223,8.
高寒草甸土壤贮水量对封育措施的响应
Response of Soil Water Storage to Fencing Measures in the Alpine Meadow
摘要
Abstract
Taking the alpine meadow in Maqin of Qinghai Province as research site,we analyzed the temporal variation characteristics,soil water-holding capacity and its influencing factors of soil water storage content under the condition of fencing measures.The results are as follows.The changing trend about the soil water storage of sample area of fencing and grazing is consistent with precipitation,and it can be divided into freezing stage agglomeration,fluctuations in consumption and accumulation period.In the growing period of plant from May 1 to September 28,the average soil water storages in the depth of 0-40 cm of fencing and grazing are 112.58 mm and 96.26 mm,respectively,the water storage under fencing is greater than that under grazing.Soil water storage was positively correlated with green body(p＜0.05),underground biomass (p＜0.01),was not correlated with organic carbon density(p＞0.05);and was significantly negatively correlated with soil bulk density(p＜0.01).Soil water storage has different changes in the vertical direction and it is higher in the upper layer than the deeper layer.The average soil bulk density decreased by 11 percent after fencing in the depth of 0 40 cm.After 11 years fencing in alpine meadow,the soil saturated water holding capacity,capillary water holding capacity and field capacity increased by 6％,9％ and 11％,respectively,and on rise rates were 1.03 mm/year,1.37 mm/year and 1.37 mm/year,repectivel.It indicates that,to some extent,fencing can increase the alpine meadow soil water-holding capacity.关键词
高寒草甸/土壤贮水量/封育/土壤容重Key words
alpine meadow/soil water storage/fencing/soil bulk density分类
农业科技引用本文复制引用
贺慧丹,祝景彬,未亚西,李红琴,杨永胜,李英年..高寒草甸土壤贮水量对封育措施的响应[J].水土保持研究,2018,25(3):210-216,223,8.基金项目
国家重点研发计划(2016YFC0501802) （2016YFC0501802）
青海省国际合作项目(2015-HZ-801) （2015-HZ-801）
