干旱区生态环境知识资源中心(Arid): Relationships between diurnal and seasonal variation of photosynthetic characteristics of Eucalyptus plantation and environmental factors under dry-season irrigation with fertilization

Arid

DOI	10.1016/j.agwat.2021.106737
	Relationships between diurnal and seasonal variation of photosynthetic characteristics of Eucalyptus plantation and environmental factors under dry-season irrigation with fertilization
	Hua, Lei; Yu, Fei; Qiu, Quan; He, Qian; Su, Yan; Liu, Xiaodong; Li, Jiyue
通讯作者	He, Q ; Li, JY (corresponding author), South China Agr Univ, Coll Forestry & Landscape Architecture, Guangdong Key Lab Innovat Dev & Utilizat Forest P, Guangzhou 510642, Peoples R China.
来源期刊	AGRICULTURAL WATER MANAGEMENT
ISSN	0378-3774
EISSN	1873-2283
出版年	2021
卷号	248
英文摘要	Eucalyptus is widely planted in South China and has high economic and ecological values. However, the seasonal drought in southern China severely limits the productivity of Eucalyptus plantation. In this study, the dry-season irrigation was carried out after the conventional production and planting of Eucalyptus. The diurnal changes of photosynthetic characteristics of Eucalyptus plantations were measured in July, October 2017 and January, May 2018 to explore the diurnal and seasonal variations and their responses to both dry-season irrigation and environmental factors. The results showed that during the first-year growth of Eucalyptus urophylla x E. grandis plantation, (1) the diurnal changes of the trees under different treatments showed single-peak curves with the varied occurrence time of the highest photosynthetic characteristics in different months; the E. urophylla x E. grandis without dry-season irrigation (CK and F) had transpiration midday depression in January and that with the only dry-season irrigation (W) exhibited both photosynthetic and transpiration midday depression in May. (2) The trees of CK and F were subjected to mild drought stress in the dry season and their maximum photosynthetic and transpiration rate were lower than those of W and WF treatment respectively, but they had higher maximum WUE. The trees of W had significantly higher daily net CO2 assimilation and daily water transpiration in dry season. (3) The diurnal changes of photosynthetic characteristics were mainly influenced by water vapor pressure deficit (VPD) at the corresponding time of the month. (4) In the short-term treatments, dry-season irrigation and fertilization significantly increased the biomass of E. urophylla x E. grandis. Dry-season irrigation alleviated the mild drought stress for gas exchange in the dry season and further promote the biomass of E. urophylla x E. grandis. This study provided an important practical exploration for improving the productivity of E. urophylla x E. grandis plantation in seasonal arid areas.
英文关键词	Dry-season irrigation Eucalyptus urophylla x E. grandis plantation Diurnal and seasonal variation Photosynthetic characteristics Midday depression
类型	Article
语种	英语
收录类别	SCI-E
WOS记录号	WOS:000632331000004
WOS类目	Agronomy ; Water Resources
WOS研究方向	Agriculture ; Water Resources
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/349330
作者单位	[Hua, Lei; Yu, Fei; Qiu, Quan; He, Qian; Su, Yan; Liu, Xiaodong; Li, Jiyue] South China Agr Univ, Coll Forestry & Landscape Architecture, Guangdong Key Lab Innovat Dev & Utilizat Forest P, Guangzhou 510642, Peoples R China; [Yu, Fei] Guangdong Acad Forestry, Prov Key Lab Silviculture Protect & Utilizat, Guangzhou 510520, Guangdong, Peoples R China
推荐引用方式 GB/T 7714	Hua, Lei,Yu, Fei,Qiu, Quan,et al. Relationships between diurnal and seasonal variation of photosynthetic characteristics of Eucalyptus plantation and environmental factors under dry-season irrigation with fertilization[J],2021,248.
APA	Hua, Lei.,Yu, Fei.,Qiu, Quan.,He, Qian.,Su, Yan.,...&Li, Jiyue.(2021).Relationships between diurnal and seasonal variation of photosynthetic characteristics of Eucalyptus plantation and environmental factors under dry-season irrigation with fertilization.AGRICULTURAL WATER MANAGEMENT,248.
MLA	Hua, Lei,et al."Relationships between diurnal and seasonal variation of photosynthetic characteristics of Eucalyptus plantation and environmental factors under dry-season irrigation with fertilization".AGRICULTURAL WATER MANAGEMENT 248(2021).