干旱区生态环境知识资源中心(Arid): 阿克苏市3种绿化乔木树干液流日变化特征

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	阿克苏市3种绿化乔木树干液流日变化特征
其他题名	Sap flow diurnal variation of 3 main urban greening tree species in Aksu City
	买尔当·克依木; 玉米提·哈力克; 古丽卡玛尔·迪力木拉提; 古丽比亚·吾买尔
来源期刊	森林与环境学报
ISSN	2096-0018
出版年	2016
卷号	36 期号:4 页码:473-479
中文摘要	为了测算园林树木的蒸腾耗水量,应用热脉冲技术对阿克苏市3种常见绿化乔木(小叶白蜡、法国梧桐、桑树)进行树干液流的测定,并分析其日变化规律,同时运用自动气象站记录各气象参数数据,分析树干液流日变化与气象因子之间的相关性。结果显示:3种乔木树干液流速率之间有一定的差异,但其日变化过程几乎相似,均有明显的昼夜变化规律。白天的液流速率比夜间大,午间由于太阳辐射(Rs)过强出现午休现象,凌晨和晚上树干液流速率较低,夜间保持微弱的树干液流过程。小叶白蜡、法国梧桐、桑树等树干液流日变化都与太阳辐射、空气温度(Ta)、风速(Ws)呈显著正相关,而与空气湿度(H)呈显著负相关;逐步回归模型显示,影响小叶白蜡树干液流的主要气象因子是太阳辐射和空气湿度,模型拟合度为0.962,法国梧桐的是空气温度和空气湿度,拟合度为0.971,桑树的是空气温度和太阳辐射,拟合度为0.915。不同乔木的日累计液流量大小排序为小叶白蜡(57 0002 400) mL﹥法国梧桐(55 4002 100) mL﹥桑树(7 6001 800)mL。
英文摘要	Stem sap flow (SF) of common tree species, Fraxinus sogdiana, Platanusacerifolia, and Morus alba, in Aksu City was determined by applying heat pulse technique, its daily variation characteristics, correlation between sap flow and meteorological factors were analyzed. There were certain differences in stem sap flow rate among three tree species, but there were still certain similarities in their daily change process. All of them had obvious diurnal variation law. Sap flow rate in daytime was higher than that in nighttime. At noon, midday depression appeared due to the high solar radiation. In the early morning and evening the stem sap flow rate was lower, while in nighttime stem sap flow process remained weak. Sap flow diurnal variation had significantly positive correlation with solar radiation, temperature and wind speed, and significantly negative correlation with humidity. According to stepwise regression model, solar radiation and humidity had the highest impact on the sap flow variation of Fraxinus sogdiana (R~2=0.962), temperature and humidity for Platanusacerifolia (R~2=0.971), temperature and solar radiation for Morus alba (R~2=0.915). Among these three tree species, Fraxinus sogdiana had the highest sap flow daily accumulation (57 0002 400) mL, followed by Platanus*acerifolia (55 4002 100) mL, and thirdly Morus alba (7 6001 800) mL.
中文关键词	干旱区 ; 绿化乔木 ; 树干液流 ; 气象因子 ; 回归模型
英文关键词	arid area greening tree species stem sap flow meteorological factors regression model
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:5825223
来源机构	新疆大学
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/234697
作者单位	新疆大学资源与环境科学学院, 乌鲁木齐, 新疆 830046, 中国
推荐引用方式 GB/T 7714	买尔当·克依木,玉米提·哈力克,古丽卡玛尔·迪力木拉提,等. 阿克苏市3种绿化乔木树干液流日变化特征[J]. 新疆大学,2016,36(4):473-479.
APA	买尔当·克依木,玉米提·哈力克,古丽卡玛尔·迪力木拉提,&古丽比亚·吾买尔.(2016).阿克苏市3种绿化乔木树干液流日变化特征.森林与环境学报,36(4),473-479.
MLA	买尔当·克依木,et al."阿克苏市3种绿化乔木树干液流日变化特征".森林与环境学报 36.4(2016):473-479.