干旱区生态环境知识资源中心(Arid): 塔里木河下游典型荒漠河岸植物水分来源

Arid

	塔里木河下游典型荒漠河岸植物水分来源
其他题名	Water Sources of Typical Desert Riparian Plants in the Lower Reaches of Tarim River
	王玉阳 1; 陈亚鹏 1; 李卫红1 ; 王日照 1; 周莹莹 1; 张建鹏 2
来源期刊	中国沙漠
ISSN	1000-694X
出版年	2017
卷号	37 期号:6 页码:1150-1157
中文摘要	通过对塔里木河下游典型荒漠植物河岸胡杨(Populus euphratica,成年和幼龄)、柽柳(Tamarix ramosissima) 、甘草(Glycyrrhiza inflata)、骆驼刺(Alhagi sparfolia)木质部水及不同潜在水源的稳定性氧同位素值的测定,并利用多源线性混合模型(IsoSource)和相似性比例指数(PS指数)分别分析了各潜在水源对不同植物的贡献率以及各月份不同植物间的水分利用关系。结果表明:(1)在塔里木河下游,成年胡杨、幼龄胡杨、柽柳几乎都不利用0~50cm的表层土壤水,而主要利用200cm以下的深层土壤水和地下水,而甘草、骆驼刺主要吸收50~200cm的土壤水。(2)在生长季的不同月份里,除个别月份外,胡杨(成年和幼龄)、柽柳之间存在激烈水分竞争;甘草、骆驼刺在生长旺季和末期对各水源都存在较强的竞争关系,而成年或幼龄胡杨、柽柳和甘草、骆驼刺之间水分竞争关系较弱。(3)在塔里木河下游,为了适应极端干旱,无论是乔木胡杨、还是灌木柽柳,水分来源主要是较稳定的深层水源,且对各水源的利用比例在不同月份波动不大。
英文摘要	The Lower Reaches of the Tarim River is featured with an extraordinary dry and hot climate.Vegetation here has a harsh environment to survival,and water is the most crucial ecological factor.The research of water sources used by desert plants in the growing season helps to understand the water use strategy of the desert plants,which will be useful to vegetation reconstruction in the Lower Reaches of Tarim River.In this study,the stable oxygen isotope(delta18 O)of stem water of four dominant plant species,groundwater and soil water in the lower reaches of Tarim River were measured in May,July,August and September,2015.And then we used the Multi-source mixed liner model(IsoSource)to analyze the probable contribution of potential water sources used by these dominant desert plants.In addition,we use the proportional similarity index(PSI)to analyze the water use relationship between different desert plants.The result indicated that:(1)in the Lower Reaches of Tarim River,Populuseuphraticaoliv(young and mature)and Tamarix ramosissima can hardly use soil water stored at 0-50 cm depth,but mainly uptook deep soil water stored below 200 cm depth and groundwater,Gly-cyrrhizainflataand Alhagi spar folia mainly acquired soil water stored at 50-200 cm depth.(2)During growing season,P.euphratica oliv(young and mature)and T.ramosissima had a fierce water competition,except for individual months.lycyrrhiza inflata and Alhagi spar folia also had a strong water competition,however,P.euphratica oliv(young and mature)and T.ramosissima had a weak water competition with G.inflataand A.spar folia.(3)In order to adapt extremely drought environment,P.euphratica oliv(young and mature)and T.ramosissima had a stable water sources,and the feasible proportion of water sources used by different plants had a slight fluctuation in the Lower Reaches of Tarim River.
中文关键词	塔里木河 ; 荒漠植物 ; 水分来源 ; 稳定性同位素
英文关键词	Tarim River desert plant water sources stable isotopes
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:6118697
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/2XILL650/237154
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室, 乌鲁木齐, 新疆 830011, 中国; 2.中国科学院大学, 北京 100049, 中国
推荐引用方式 GB/T 7714	王玉阳,陈亚鹏,李卫红,等. 塔里木河下游典型荒漠河岸植物水分来源[J]. 中国科学院新疆生态与地理研究所,2017,37(6):1150-1157.
APA	王玉阳,陈亚鹏,李卫红,王日照,周莹莹,&张建鹏.(2017).塔里木河下游典型荒漠河岸植物水分来源.中国沙漠,37(6),1150-1157.
MLA	王玉阳,et al."塔里木河下游典型荒漠河岸植物水分来源".中国沙漠 37.6(2017):1150-1157.