干旱区生态环境知识资源中心(Arid): 沙漠人工植被区蒸腾测定

Arid

	沙漠人工植被区蒸腾测定
其他题名	Transpiration in Artificially Re-vegetated Desert Area
	张志山; 李新荣; 王新平; 张景光
来源期刊	中国沙漠
ISSN	1000-694X
出版年	2005
卷号	25 期号:3 页码:374-379
中文摘要	利用表面覆盖油毡的大型非称重式蒸渗池和LI-1600气孔计测定油蒿(Artemisia ordosica)和柠条(Caragana korshinskii)的蒸腾,比较了两种测定方法是否存在差异.结果表明:蒸渗池表面自油毡覆盖至试验结束,油蒿、柠条和流沙处理0～150 cm土层土壤含水量都增加,尤其流沙处理土壤含水量上升最明显;油蒿与柠条的冠幅、新梢长和叶面积指数均增加;由于中子仪探测不到蒸渗池底部40 cm厚的砾石层的水分,导致了对照流沙处理测定结果不合常规.测定日期不同,LI-1600气孔计测定的蒸腾速率的变化趋势和值也不同,但油蒿和柠条的变化步调是一致的,油蒿的蒸腾速率普遍高于柠条的;用多项式拟合得到蒸腾速率日变化曲线均达到显著水平(P＜0.05).通过单位换算统一和尺度转换,蒸渗池和LI-1600气孔计测定结果进行方差分析,表明物种间(油蒿和柠条)差异达显著水平(P＜0.05),测定方法间(蒸渗池和LI-1600气孔计)差异不显著;从而说明本研究以叶面积指数和植物冠层盖度为基础,进行叶片水平与种群水平间的尺度转换是可行的.
英文摘要	The experiment based on non-weighing lysimeter covered with bitumen felt and LI-1600 stoma meter aimed to determine the transpiration of Artemisia ordosica and Caragana korshinskii in re-vegeta-ted desert area, and compared the results. The results showed that the soil water contents of sand, A. or-dosica and C. korshinskii vegetation in lysimeters all increase due to bitumen felt cover, especially of the CK(sand). The canopy, new branch length and leaf area index also grow in experimental period. But the CK consumes a little water because the neutron probe can t detect the water in gravel layer. The trends and val-ues of transpiration rates determined by LI-1600 stoma meter were different in different date, but the varia-tion paces of both A. ordosica and C. korshinskii were consistent, and the transpiration rate of A. ordosi-ca was higher than that of C. korshinskii. All of diurnal variation curves of transpiration rates simulated by polynomial are significant (P<0. 05). With unit integrating and scale conversion, the transpirations deter-mined by lysimeter and LI-1600 stoma meter are analyzed with Variance Analysis Method. The results show that the difference between species is significant (P<0. 05), but the difference between methods is not sig-nificant. It indicates that the scale conversion between leaf level and plant population level based on canopy and leaf area index is successful.
中文关键词	沙漠人工植被区 ; 植物蒸腾 ; 蒸渗池 ; LI-1600气孔计 ; 尺度转换
英文关键词	artificially re-vegetated desert area transpiration lysimeter LI-1600 stoma meter scale conver-sion
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:1996984
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/2XILL650/206980
作者单位	中国科学院寒区旱区环境与工程研究所,沙坡头沙漠试验研究站, 兰州, 甘肃 730000, 中国
推荐引用方式 GB/T 7714	张志山,李新荣,王新平,等. 沙漠人工植被区蒸腾测定[J]. 中国科学院西北生态环境资源研究院,2005,25(3):374-379.
APA	张志山,李新荣,王新平,&张景光.(2005).沙漠人工植被区蒸腾测定.中国沙漠,25(3),374-379.
MLA	张志山,et al."沙漠人工植被区蒸腾测定".中国沙漠 25.3(2005):374-379.