干旱区生态环境知识资源中心(Arid): 古尔班通古特沙漠南缘地下水深埋区幼龄梭梭春夏季土壤水分利用动态

Arid

	古尔班通古特沙漠南缘地下水深埋区幼龄梭梭春夏季土壤水分利用动态
其他题名	The Dynamic of Soil Water Utilization in Spring and Summer of Young Haloxylon ammodendron at Deep Groundwater of Southern Edge of Gurbantunggut Desert
	傅思华 1; 胡顺军 1; 杨涛 1; 朱海 1; 周天河 2
来源期刊	水土保持学报
ISSN	1009-2242
出版年	2016
卷号	30 期号:5 页码:230-234
中文摘要	梭梭是古尔班通古特沙漠的建群种,为研究梭梭水分利用特征及季节变化,于2014年5月和7月利用稳定性同位素技术测量幼龄梭梭小枝木质部水、冠下0400cm不同土层土壤水delta~(18) O值,采用直接对比法、平均深度模型以及Iso-Source模型对幼龄梭梭春夏季的水分来源进行分析。结果表明:幼龄梭梭冠下070cm土壤含水量5月显著高于7月,70cm及以下土层土壤含水量5月、7月相差不大;表层土壤水delta~(18) O值变化较大,5月表层土壤水delta~(18) O值与7月相比显著偏小;5月各土层土壤水delta~(18) O值变化复杂,7月各土层土壤水delta~(18) O值变化单一,随深度增加逐渐减小;幼龄梭梭5月主要利用050cm土层的土壤水,利用比例达67.5%,7月主要利用250400cm土层的土壤水,利用比例达94.2%。
英文摘要	Water is not only an important factor limiting the survival and growth of plants,but also a factor influencing the distribution and quantity of vegetation in arid areas.Haloxylon ammodendronis a dominant plant species in the Gurbantunggut Desert.Studing the water use pattern and seasonal changes is vital for understanding plant adaptation to environmental changes in the arid zone.In this study,the oxygen sable isotope ratios(delta~(18) O)of xylem water and soil water in different soil layers(0400cm)were measured,and the water resource of young Haloxylon ammodendronin spring and summer were analyzed with direct comparison method,Iso-Source model and the mean depth of water uptake model.The results show that(1)The soil water of 070cm in May was significantly higher than the surface soil moisture content in July,the difference of soil moisture content in 70400cm soil layer is not significant in Spring and Summer.(2)The delta~(18) O values of surface soil water changed widely.In May,thedelta~(18) O value of surface soil water was varied and its significantly more negative compared with July.In July,thedelta~(18) O value of soil water gradually decreases with depth increases.(3)The mainly water resource of young Haloxylon ammodendronis the soil water in 050cm soil layer in May,the use ratio is up to 67.5%.However,in July,the contribution of surface soil water decreased drastically while that deep soil water increased rapidly,the mainly water resource is the soil water in 250400cm soil layer in July,the use ratio is up to 94.2%.
中文关键词	梭梭 ; 土壤水分 ; 稳定性同位素 ; 古尔班通古特沙漠
英文关键词	Haloxylon ammodendron water sources stable isotope Gurbantunggut des
语种	中文
国家	中国
收录类别	CSCD
WOS类目	PLANT SCIENCES
WOS研究方向	Plant Sciences
CSCD记录号	CSCD:5824674
来源机构	中国科学院新疆生态与地理研究所
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/234985
作者单位	1.中国科学院新疆生态与地理研究所, 荒漠与绿洲生态国家重点实验站, 乌鲁木齐, 新疆 830011, 中国; 2.赣州水务集团有限责任公司, 赣州, 江西 341000, 中国
推荐引用方式 GB/T 7714	傅思华,胡顺军,杨涛,等. 古尔班通古特沙漠南缘地下水深埋区幼龄梭梭春夏季土壤水分利用动态[J]. 中国科学院新疆生态与地理研究所,2016,30(5):230-234.
APA	傅思华,胡顺军,杨涛,朱海,&周天河.(2016).古尔班通古特沙漠南缘地下水深埋区幼龄梭梭春夏季土壤水分利用动态.水土保持学报,30(5),230-234.
MLA	傅思华,et al."古尔班通古特沙漠南缘地下水深埋区幼龄梭梭春夏季土壤水分利用动态".水土保持学报 30.5(2016):230-234.