干旱区生态环境知识资源中心(Arid): 干旱区雨养多枝柽柳茎干液流动态及其对环境因子的响应

Arid

	干旱区雨养多枝柽柳茎干液流动态及其对环境因子的响应
其他题名	Dynamics of sap flow rates in stems of typical desert shrub Tamarix ramosissima and its responses to the environmental factors
	李双 1; 杜建括 1; 肖洪浪2
来源期刊	干旱区资源与环境
ISSN	1003-7578
出版年	2018
卷号	32 期号:12 页码:170-175
中文摘要	为探究干旱区雨养柽柳茎流速率与气象要素的关系,对多枝柽柳茎干液流速率及环境因子进行了同步监测。结果表明: 1)不同天气条件下,柽柳液流速率的日变化进程明显不同;气象因子对柽柳液流影响依次为太阳辐射>水汽压差>气温>相对湿度>风速,回归模型能较好地解释不同月份柽柳液流速率变化。 2)柽柳上、下午液流速率与太阳辐射变化呈非对称性,拟合结果在P < 0.01的显著水平上R~2均达0.930以上。 3)夜间,柽柳维持着较稳定的低速液流,其量占全天液流量的3.92% ~ 13.53%,且约有50%用于植物夜间蒸腾。
英文摘要	To explore the relationships between sap flow velocity and main environmental factors in arid desert areas without irrigation condition,the Flow 32 heat balance gauge was used to monitor the sap flow of T. ramosissima during June to September of 2013. The environmental factors were also monitored simultaneously. The results showed that: ( 1) the diurnal variations of stem sap flow rate differed with weather conditions. The partial correlation analysis revealed that the order of the main meteorological factors affecting the sap flux of T. ramosissima were: solar radiation >vapor pressure deficit >air temperature >air relative humidity >wind speed. ( 2) The relationship between stem sap flow rate and solar radiation displayed evident and asymmetric variations in the morning and afternoon,and their relationships reached a high significant level ( P < 0.01) with large determination coefficients ( R~2 ) over 0.930. ( 3) There was still little sap flow at night. Nighttime sap flow was typically 3.92% ~ 13.53% of daytime rates. The stomata of the plant was not completely closed at night,and about 50% of sap flow contributed to transpiration during nighttime.
中文关键词	多枝柽柳 ; 茎干液流 ; 气象要素 ; 夜间蒸腾
英文关键词	Tamarix ramosissima Ledeb stem sap flow meteorological elements nighttime transpiration
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:6378136
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/237742
作者单位	1.陕西理工大学历史文化与旅游学院,秦岭与蜀道地理研究所, 汉中, 陕西 723001, 中国; 2.中国科学院西北生态环境资源研究院, 中国科学院内陆河流域生态水文重点实验室, 兰州, 甘肃 730000, 中国
推荐引用方式 GB/T 7714	李双,杜建括,肖洪浪. 干旱区雨养多枝柽柳茎干液流动态及其对环境因子的响应[J],2018,32(12):170-175.
APA	李双,杜建括,&肖洪浪.(2018).干旱区雨养多枝柽柳茎干液流动态及其对环境因子的响应.干旱区资源与环境,32(12),170-175.
MLA	李双,et al."干旱区雨养多枝柽柳茎干液流动态及其对环境因子的响应".干旱区资源与环境 32.12(2018):170-175.