干旱区生态环境知识资源中心(Arid): 基于茎干液流法和涡度相关法的小叶锦鸡儿(Caragana microphylla)群落蒸散特征

Arid

	基于茎干液流法和涡度相关法的小叶锦鸡儿(Caragana microphylla)群落蒸散特征
其他题名	Transpiration and Evapotranspiration of Caragana microphylla Community Measured with the Sap Flow and Eddy Covariance Methods
	祁秀娇 1; 刘廷玺 2; 段利民 2; 陈小平 1; 黄天宇 1
来源期刊	中国沙漠
ISSN	1000-694X
出版年	2019
卷号	39 期号:4 页码:73-82
中文摘要	运用Dynamax茎流测量系统、涡度相关系统、气象-土壤环境观测系统进行连续观测,利用基径横截面积对单枝茎干液流进行尺度扩展,得到科尔沁沙地小叶锦鸡儿( Caragana microphylla)群落蒸腾量( T),并与涡度相关系统观测的蒸散发量( ET)进行对比,详细分析了小叶锦鸡儿群落T与ET的变化特征以及群落水分收支状况。结果表明:( 1)小叶锦鸡儿群落T、ET日变化趋势基本一致,均值分别为1.61 mm·d~(-1)、2.43 mm·d~(-1);( 2) T、ET日内变化曲线分别呈宽幅单峰型、钟型分布,日累积量均呈S型增长趋势;( 3)不同天气条件下T、ET日变化峰型各异,峰值及总量变化水平晴天高于阴雨天;( 4)不同降水事件中,降雨时间不同导致T启动时间推迟或结束时间提前,ET发生时间降水前后无显著差异;降雨量P≤10 mm或P>20 mm时,雨后T有所降低, 10 mm
英文摘要	Horqin sandy land is one of the most typical desertification areas in North China,and Caragana microphylla is the typical vegetation in desert area. We measured transpiration and evapotranspiration of C. microphylla with packaged sap flow gauges and an eddy covariance system in Horqin sandy land. The basal diameter was used to scale the single stem flow to transpiration of C. microphylla. In contrast, the characteristics of transpiration ( T) and evapotranspiration ( ET),and water budget of the community were analyzed in detail. The results showed that: ( 1) the daily changes of T and ET of C. microphylla community were basically consistent,the daily mean values were 1.61 mm·d~(-1) and 2.43 mm·d~(-1),respectively; ( 2) the daily variation curves of T and ET were wide and single peak type and clock type, and the daily accumulative process curves showed a " S" type growth trend; ( 3) in different weather conditions,the peaks of T and ET daily changes were different. The change level of total amount is higher than that of cloudy and rainy days; ( 4) in different precipitation events,the rainfall time varies lead to T start time or end time changed,there is no significant difference of ET occurrence time before and after rainfall; when P≤10 mm or P>20 mm,T has decreased after rainfall,10 mm
中文关键词	小叶锦鸡儿( Caragana microphylla) ; 茎干液流 ; 涡度相关 ; 蒸腾 ; 蒸散发
英文关键词	Caragana microphylla sap flow eddy covariance transpiration evapotranspiration
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:6526894
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/2XILL650/239814
作者单位	1.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; 2.内蒙古农业大学水利与土木建筑工程学院;;内蒙古农业大学, ;;内蒙古自治区水资源保护与利用重点实验室, 呼和浩特;;呼和浩特, 内蒙古;;内蒙古 010018;;010018, 中国
推荐引用方式 GB/T 7714	祁秀娇,刘廷玺,段利民,等. 基于茎干液流法和涡度相关法的小叶锦鸡儿(Caragana microphylla)群落蒸散特征[J]. 内蒙古农业大学,2019,39(4):73-82.
APA	祁秀娇,刘廷玺,段利民,陈小平,&黄天宇.(2019).基于茎干液流法和涡度相关法的小叶锦鸡儿(Caragana microphylla)群落蒸散特征.中国沙漠,39(4),73-82.
MLA	祁秀娇,et al."基于茎干液流法和涡度相关法的小叶锦鸡儿(Caragana microphylla)群落蒸散特征".中国沙漠 39.4(2019):73-82.