The effects of subsurface irrigation at different soil water potential thresholds on the growth and transpiration of Populus tomentosa in the North China Plain

doi:10.1080/00049158.2014.920552

CSpace

	The effects of subsurface irrigation at different soil water potential thresholds on the growth and transpiration of Populus tomentosa in the North China Plain
	Xi, Benye 1; Li, Guangde 2; Bloomberg, Mark 3; Jia, Liming 1
	2014
发表期刊	AUSTRALIAN FORESTRY
ISSN	0004-9158
卷号	77 期号:3-4 页码:159-167
摘要	In order to find the optimal subsurface drip irrigation (SDI) scheduling for mature triploid Populus tomentosa plantations in the North China Plain, a field experiment was conducted in 2010 and 2011 to investigate the effects of SDI at different soil water potential (SWP) thresholds on the growth and transpiration of a P. Tomentosa plantation when it was six and seven years old. The experiment included three SWP treatments, which initiated irrigation when the SWP at 20 cm depth and 10 cm distance from a drip emitter reached -25 (T25), -50 (T50) and -75 (T75) kPa, respectively. A control non-irrigation treatment (CK) was also included. Long-term SWP, soil water content (SWC), transpiration, tree growth, meteorological factors and groundwater level were monitored. Results showed that SDI influenced the SWC only in 0-80 cm of soil. From April to July, on average, the cumulative stand-level transpiration on a ground area basis (E) and growth of basal area at breast height accounted for 81% and 93% of their corresponding whole-season values, while the cumulative reference crop potential evapotranspiration (ET0) was 43% higher than the rainfall. In contrast, from August to October, the growth rate of P. Tomentosa was very slow, while the cumulative rainfall was 36% higher than ET0 and the average groundwater level was relatively high (125 cm). Relative to CK, the E under the SWP treatments was significantly (P 25, T50 and T75 increased the annual above-ground dry biomass (ADB) increment by 54% (P 0.05) in 2010, and by 28% (P > 0.05), 29% (P > 0.05) and 32% (P © 2014 © 2014 The Author(s). Published by Taylor & Francis.
关键词	Evapotranspiration Forestry Groundwater Rain Scheduling Soil moisture Subirrigation Transpiration Irrigation scheduling Populus tomentosa Sap flow Soil water potential Trickle irrigation
DOI	10.1080/00049158.2014.920552
收录类别	EI ; SCIE
语种	英语
WOS研究方向	Forestry
WOS类目	Forestry
WOS记录号	WOS:000346472500004
出版者	Taylor and Francis Ltd.
EI入藏号	20151400702045
EI主题词	Growth rate
原始文献类型	Journal article (JA)
EISSN	2325-6087
引用统计	被引频次：25[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.library.ouchn.edu.cn/handle/39V7QQFX/3881
专题	国家开放大学
作者单位	1.Ministry of Education Key Laboratory of Silviculture and Conservation, Beijing Forestry University, Beijing, China; 2.School of Agroforestry and Medicine, Open University of China, Beijing, China; 3.School of Forestry, University of Canterbury, Christchurch, New Zealand
推荐引用方式 GB/T 7714	Xi, Benye,Li, Guangde,Bloomberg, Mark,et al. The effects of subsurface irrigation at different soil water potential thresholds on the growth and transpiration of Populus tomentosa in the North China Plain[J]. AUSTRALIAN FORESTRY,2014,77(3-4):159-167.
APA	Xi, Benye,Li, Guangde,Bloomberg, Mark,&Jia, Liming.(2014).The effects of subsurface irrigation at different soil water potential thresholds on the growth and transpiration of Populus tomentosa in the North China Plain.AUSTRALIAN FORESTRY,77(3-4),159-167.
MLA	Xi, Benye,et al."The effects of subsurface irrigation at different soil water potential thresholds on the growth and transpiration of Populus tomentosa in the North China Plain".AUSTRALIAN FORESTRY 77.3-4(2014):159-167.