干旱区生态环境知识资源中心(Arid): 旱区沙柳蒸腾规律及其对气象因子的响应

Arid

	旱区沙柳蒸腾规律及其对气象因子的响应
其他题名	Transpiration of Salix psammophila and its response to meteorological factors in arid area
	王强民; 王文科; 王周锋; 安可栋; 陈立; 宫程程
来源期刊	南水北调与水利科技
ISSN	1672-1683
出版年	2015
卷号	13 期号:4 页码:771-775
中文摘要	为研究沙柳蒸腾规律及其与气象要素的关系,采用包裹式茎流计测量沙柳全叶期至落叶期液流速率,并分析了沙柳蒸腾与气象要素的关系。研究结果表明:沙柳枝条液流速率与其直径呈正相关关系;沙柳液流在早7时开始,10时至15时处于高值,16时后急剧减少,至夜间21时后降至最低(接近0);沙柳液流速率具有典型的季节性特征,且受气象要素影响显著,其受影响强烈程度的大小顺序为:饱和水汽压差>太阳辐射 >大气温度 >相对湿度>风速;另外,参考蒸散发量和液流速率呈显著线性关系,随着潜在蒸散发的增加,沙柳蒸腾也呈增加趋势。
英文摘要	In order to investigate the relationship between the transpiration of Salix psammophila and meteorological factors, packaged sap flow gauge was used to measure the sap flow velocities in the full leaf season and defoliation season. The results showed that (1) the sap flow velocity of Salix psammophila branch has a positive correlation with branch diameter; (2) sap flow velocity increases gradually from 7 am in the morning,reaches a peak between 10 am in the morning and 3 pm in the afternoon, then decreases gradually from 4 pm in the afternoon to the lowest value (near zero) after 9 pm at night; (3) sap flow velocity of Salix psammophila has an obviously seasonal variation with the maximum value in July while the minimum in November; (4) meteorological factors are the most significant factors affecting the sap flow velocity of Salix psammophila in the following order: vapor pressure deficit>solar radiation>air temperature>relative humidity>wind speed;and (5) there is a significantly linear relationship between sap flow velocity and reference evapotranspiration with a correlation coefficient of R~2 =0.77.
中文关键词	沙柳 ; 液流速率 ; 气象因子 ; 干旱区
英文关键词	Salix psammophila sap flow velocity meteorological factor arid area
语种	中文
国家	中国
收录类别	CSCD
WOS类目	AGRICULTURE MULTIDISCIPLINARY
WOS研究方向	Agriculture
CSCD记录号	CSCD:5501186
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/233010
作者单位	长安大学环境科学与工程学院, 旱区地下水文与生态效应教育部重点实验室, 西安, 陕西 710054, 中国
推荐引用方式 GB/T 7714	王强民,王文科,王周锋,等. 旱区沙柳蒸腾规律及其对气象因子的响应[J],2015,13(4):771-775.
APA	王强民,王文科,王周锋,安可栋,陈立,&宫程程.(2015).旱区沙柳蒸腾规律及其对气象因子的响应.南水北调与水利科技,13(4),771-775.
MLA	王强民,et al."旱区沙柳蒸腾规律及其对气象因子的响应".南水北调与水利科技 13.4(2015):771-775.