干旱区生态环境知识资源中心(Arid): 2014年浑善达克沙地黄柳生长季水分来源同位素示踪研究

Arid

	2014年浑善达克沙地黄柳生长季水分来源同位素示踪研究
其他题名	Water Sources in Growing Season of Salix gordejevii in the Otindag Sandy Land Traced by Stable D Isotope in 2014
	菅晶; 贾德彬; 郭少峰; 钱龙娇
来源期刊	干旱区研究
ISSN	1001-4675
出版年	2017
卷号	34 期号:2 页码:350-355
中文摘要	黄柳是我国内蒙古东部和辽宁西部沙丘上广泛分布的多年生灌木,是极佳的固沙树种。通过利用氢同位素示踪方法,测定了2014年浑善达克沙地黄柳生长季茎干水与潜在水源(降水、土壤水、地下水)氢同位素比率deltaD值,并利用多源线性混合模型IsoSource,计算了黄柳对各潜在水源的利用比例。结果表明: 在5月黄柳80% 以上利用120 ~ 160 cm 土壤水和地下水; 6月主要吸收0 ~ 40 cm 土壤水; 7月主要吸收120 ~ 160 cm 土壤水; 8月以地下水为主要水源,利用率为82%。这表明生长在不同季节的黄柳对于各潜在水源的利用有特定的适应结果,同时也说明荒漠灌木可以通过自身的调节朝着最优的方向发展,实现最大限度的水分利用。
英文摘要	Salix gordejevii is a widely-distributed perennial shrub species over the dunes in east Inner Mongolia and west Liaoning Province,China,and it is an excellent sand-fixing shrub species. However,there were very few studies about water sources closely related to the growth of S. gordejevii in both China and foreign countries. In this study,the hydrogen isotope tracer method was used to measure the growth of S. gordejevii in the growing season of 2014,branch stem water potential,water (precipitation,groundwater and soil moisture) regime and values of hydrogen stable isotope ratio (deltaD) in the Otindag Sandy Land,and the multi-source linear mixed model Iso Source model was used to calculate the proportions of potential water sources for the growth of S. gordejevii. The results showed that over 80% water used by S. gordejevii was soil moisture and groundwater in depth of 120 - 160 cm in May. S. gordejevii absorbed mainly soil moisture of 0 - 40 cm in depth in June and mainly that of 120 - 160 cm in depth in July. In August,groundwater was the main water source,and its utilization rate was as high as 82%. These revealed that the potential water sources for the growth of S. gordejevii were different in different seasons,and also suggested that such desert shrub could adapt the optimal water sources through their own adaptive capability to achieve the maximum water use.
中文关键词	黄柳(Salix gordejevii) ; 稳定氢同位素 ; IsoSource 模型 ; 水分来源
英文关键词	Salix gordejevii hydrogen stable isotope IsoSource model water source
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:5946658
来源机构	内蒙古农业大学
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/235980
作者单位	内蒙古农业大学,水利与土木建筑工程学院, 呼和浩特, 内蒙古 010018, 中国
推荐引用方式 GB/T 7714	菅晶,贾德彬,郭少峰,等. 2014年浑善达克沙地黄柳生长季水分来源同位素示踪研究[J]. 内蒙古农业大学,2017,34(2):350-355.
APA	菅晶,贾德彬,郭少峰,&钱龙娇.(2017).2014年浑善达克沙地黄柳生长季水分来源同位素示踪研究.干旱区研究,34(2),350-355.
MLA	菅晶,et al."2014年浑善达克沙地黄柳生长季水分来源同位素示踪研究".干旱区研究 34.2(2017):350-355.