陕西师范大学学报（自然科学版）2018，Vol.46Issue(1)：97-103,7.DOI:10.15983/j.cnki.jsnu.2018.01.411
鄱阳湖苔草枯水期的水分利用策略
Water use strategy of Carex in the dry season of Poyang Lake
摘要
Abstract
Carex ,the typical plant of Poyang Lake wetland ,was selected to study the water use strategy in December of 2015 and 2016 by field sampling and analyzing on stable hydrogen and oxygen isotopic composition of plant water and soil water .The results showed that there was a significant linear correlation between the hydrogen and oxygen stable isotope ratios of soil water , which experienced more severe evaporation in the dry season of 2016 than in 2015 .The soil water can be divided into three layers including surface soil water ,deep soil water and groundwater according to the distribution of δ18 O and soil moisture with depth .The absorption ratios of Carex to the three layers were among 28 .2％ to 41 .4％ in the dry season ,indicating a generally roughly equal absorption to surface soil water ,deep soil water and ground water .The ratios were distinct in two sections and were different in sampling points .The differences were more obvious in dry season of 2016 with lower water levels than in 2015 .关键词
鄱阳湖/枯水期/苔草/水分来源Key words
Poyang Lake/dry season/Carex/water source分类
农业科技引用本文复制引用
潘国艳,曹夏禹,张翔,邴建平..鄱阳湖苔草枯水期的水分利用策略[J].陕西师范大学学报（自然科学版）,2018,46(1):97-103,7.基金项目
国家自然科学基金(51409191) （51409191）
江西省重大生态安全问题监控协调创新中心项目(JXS-EW-00) （JXS-EW-00）
