摘要
通过对芨芨草草地土壤水分状况及芨芨草水分利用情况进行初步分析,结果表明:芨芨草地土壤贮水量呈明显的季节变化;土壤剖面可依含水量变化分为3层,即速变层、活跃层和稳定层。芨芨草群体水分利用效率以6月份为最高,而单叶水分利用效率7月份最高,具有较强的抗旱性。
Soil moisture characteristics and water use efficiency of Achnatherum splendens grassland were analyzed. The results show that soil water storage capacity has obvious seasonal change and soil profile can be divided into three layers,fast-change, active and stable layer. Community water use efficiency is highest in June, while simple leaf water use efficiency in July.
出处
《干旱气象》
2004年第4期51-55,共5页
Journal of Arid Meteorology
关键词
芨芨草
土壤水分
群体
单叶
水分利用效率
Achnatherum splendens
soil moisture characteristics
leaf
community
water use efficiency
