干旱区生态环境知识资源中心(Arid): 胡杨(Populus euphratica)与柽柳(Tamarix ramosissima)径向生长特征对比

Arid

	胡杨(Populus euphratica)与柽柳(Tamarix ramosissima)径向生长特征对比
其他题名	Comparison of Intra-annual Stem Radial Growth Characteristic between Populus euphratica and Tamarix ramosissima
	田全彦; 肖生春; 彭小梅; 肖洪浪
来源期刊	中国沙漠
ISSN	1000-694X
出版年	2015
卷号	35 期号:6 页码:1512-1519
中文摘要	基于对额济纳旗胡杨(Populus euphratica)和柽柳(Tamarix ramosissima)生长季树干的径向生长变化监测,以及气温、空气相对湿度和地下水位等环境因子的同步监测,利用突变检验和相关分析方法,对两树种日-季节尺度径向生长时间节点、阶段等特征及其环境因子响应模式进行了对比研究。结果显示:在两树种径向生长变化特征方面,日尺度上,胡杨每日径向生长最大值点出现和结束时间均比柽柳早3h左右;季节尺度上,胡杨进入快速生长阶段的时间迟于柽柳,并且比柽柳结束要早,持续时间短于柽柳。在环境响应机制方面,胡杨日收缩极值(eMDV) 、日膨胀极值(iMDV)和日净生长量(DeltaR)阶段变化平均值为柽柳的3倍以上,变化幅度也相对较大;两树种上述径向生长参数与气温和地下水埋深等因子日-季节尺度的响应模式基本一致,快速生长期的地下水位变化影响更为显著,尤其对于柽柳。研究结果对于荒漠河岸林可持续发展及内陆河流域水资源管理具有重要意义。
英文摘要	Using the point-dendrometer,the stem radius variation of Populus euphratica and Tamarix ramosissima were measured during the growing season,in Ejina Oasis,arid northwest China.The environmental factors, such as air temperature,relative air humidity and groundwater level,were monitored synchronously.Using the Regime Shift Detection,different growing phrases of the two species were detected.The relationship between the environmental factors and the diurnal stem radial variation was investigated through correlation analysis. The results showed that,the time of P.euphratica reached the start and the end of daily maximum value were 3 hours earlier than T.ramosissima.The time of P.euphratica entered the rapid growth phase was later than T.ramosissima,and the ending time was earlier.The mean value of eMDV,iMDV and Delta Rof P. euphratica were 3 times larger than T.ramosissima,and the amplitudes of the three parameters were larger for P.euphratica.It is similar of the relationship between those three parameters of the two species and the environmental factors.A more significant correlation has been found between the groundwater level and the three parameters in rapid growth phase,especially for the T.ramosissima.The research results have significant implications for the sustainable development of desert riparian forests and the water resources management in the inland river basin.
中文关键词	胡杨(Populus euphratica) ; 柽柳(Tamarix ramosissima) ; 日-季节尺度 ; 径向生长 ; 环境因子
英文关键词	Populus euphratica Tamarix ramosissima daily-seasonal scale stem radial growth environmental factors
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:5583200
来源机构	中国科学院西北生态环境资源研究院
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/233789
作者单位	中国科学院寒区旱区环境与工程研究所, 兰州, 甘肃 730000, 中国
推荐引用方式 GB/T 7714	田全彦,肖生春,彭小梅,等. 胡杨(Populus euphratica)与柽柳(Tamarix ramosissima)径向生长特征对比[J]. 中国科学院西北生态环境资源研究院,2015,35(6):1512-1519.
APA	田全彦,肖生春,彭小梅,&肖洪浪.(2015).胡杨(Populus euphratica)与柽柳(Tamarix ramosissima)径向生长特征对比.中国沙漠,35(6),1512-1519.
MLA	田全彦,et al."胡杨(Populus euphratica)与柽柳(Tamarix ramosissima)径向生长特征对比".中国沙漠 35.6(2015):1512-1519.