QQ客服 官方微博 反馈留言

	Characteristics of Dried Soil Layers Under Apple Orchards of Different Ages and Their Applications in Soil Water Managements on the Loess Plateau of China
	Wang Y. Q.; Shao, M. N.; Liu, Z. P.; Zhang, C. C.
	2015
关键词	deep soil growth age plant roots soil desiccation soil water content soil-plant water relation moisture desiccation depletion recovery alfalfa drought balance restoration vegetation pasture
英文摘要	Negative soil water balance (i.e., water input < water output) can lead to soil desiccation and subsequently the occurrence of a dried soil layer (DSL). The DSLs are generally studied at a specific sampling depth (e.g., 500 cm), and the actual extent of DSLs remains unknown due to the challenge of collecting deep soil samples. To investigate the characteristics of actual DSLs under different ages of apple orchards and ascertain the optimal age of apple orchards for avoiding/controlling the formation of DSLs, soil samples were collected to a depth of 1 800 cm under apple orchards of different ages in Changwu on the Loess Plateau of China. As the ages increased, soil water content (SWC) and mean SWC in DSLs showed an overall decreasing trend, whereas while DSL thickness and the quantity of water deficit (QWD) in DSLs demonstrated an increasing trend. The DSL was the thickest (1 600 cm) under the 17-year-old orchard, the forming velocity of DSL thickness was the highest at the apple tree growth stage of 9-17 years (168 cm year(-1)), and the highest increasing velocity of QWD (-181 mm year(-1)) was also observed at this stage. The thickness of DSL was significantly correlated with growth age and root depth of apple trees (r > 0.88), whereas the QWD and mean SWC in DSLs were found to have no correlation with them. The optimal age of apple orchards for avoiding/controlling the formation of DSLs was about 9 years. This information provided pertinent references for the management of deep water resources by controlling the growth age of plants.
出处	Pedosphere
卷	25
期	4
页	546-554
收录类别	SCI
语种	英语
ISSN号	1002-0160
内容类型	SCI/SSCI论文
源URL	[http://ir.igsnrr.ac.cn/handle/311030/38499]
专题	地理科学与资源研究所_历年回溯文献
推荐引用方式 GB/T 7714	Wang Y. Q.,Shao, M. N.,Liu, Z. P.,et al. Characteristics of Dried Soil Layers Under Apple Orchards of Different Ages and Their Applications in Soil Water Managements on the Loess Plateau of China. 2015.

个性服务

查看访问统计

相关权益政策

暂无数据

收藏/分享

除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。