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	Soil water dynamics and availability for citrus and peanut along a hillslope at the sunjia red soil critical zone observatory (czo)
	Tahir, Muhammad1; Lv, Yujuan1,2; Gao, Lei1; Hallett, Paul D.3; Peng, Xinhua1
刊名	Soil & tillage research
	2016-11-01
卷号	163页码:110-118
关键词	Critical zone observatory Hydrus-2d Soil moisture Soil structure Sustainable agriculture
ISSN号	0167-1987
DOI	10.1016/j.still.2016.05.017
通讯作者	Peng, xinhua(xhpeng@issas.ac.cn)
英文摘要	The hillslopes of red soils (ultisols) in southern china are intensively cultivated for cash crops and fruit trees. during the rainy monsoon, soil erosion is prevalent, whereas a summer/autumn dry season induces drought stress. crops respond differently to these stresses, and have different effects on soil water regime. this study used a combination of field observation and hydrus-2d modeling to assess the soil water dynamics and plant available water for peanut (arachis hypogaea) and citrus (citrus sinensis) at sunjia red soil critical zone observatory (czo). between april 1, 2012 and march 31, 2014, surface runoff and moisture content at 5, 20, 40, and 80 cm depths in the soil under both land uses were monitored at up, middle and foot slope positions along a hillslope. results indicate that the citrus plot had higher soil water content at 5 cm depth during the dry season, and lower at 20, 40 and 80 cm depths throughout the year than the peanut plot. as expected, the soil water content was higher at foot slope, compared to up slope, and in deeper soil than near surface. we observed limited soil water availability to peanut during mid july to august, and to citrus from mid july to mid-november. compared to the peanut plot, the citrus plot generally showed 12-28% greater evapotranspiration, 3-4 times less runoff, and 2-57% greater deep drainage. these differences were greater at the up slope position. our data and hydrus-2d simulation suggest that the deep-rooted citrus reduced runoff during the rainy season by increasing macropore flow and canopy interception, and minimized the soil water stress during the dry season by utilizing water from deeper soil. thus, we recommend trench planting of citrus along with peanut intercropping on hilly red soils as sustainable agricultural practices. (c) 2016 elsevier b.v. all rights reserved.
WOS关键词	DIFFERENT LAND USES ; HYDRAULIC-PROPERTIES ; LOESS PLATEAU ; CHINA ; CATCHMENT ; SYSTEM ; MULTISCALE ; DESIGN ; ROOT
WOS研究方向	Agriculture
WOS类目	Soil Science
语种	英语
出版者	ELSEVIER SCIENCE BV
WOS记录号	WOS:000381834000013
内容类型	期刊论文
URI标识	http://www.corc.org.cn/handle/1471x/2374445
专题	中国科学院大学
通讯作者	Peng, Xinhua
作者单位	1.Chinese Acad Sci, Inst Soil Sci, State Key Lab Soil & Sustainable Agr, Nanjing 210008, Peoples R China 2.Chinese Acad Sci, Grad Univ, Beijing 100081, Peoples R China 3.Univ Aberdeen, Inst Biol & Environm Sci, Aberdeen AB24 3UU, Scotland
推荐引用方式 GB/T 7714	Tahir, Muhammad,Lv, Yujuan,Gao, Lei,et al. Soil water dynamics and availability for citrus and peanut along a hillslope at the sunjia red soil critical zone observatory (czo)[J]. Soil & tillage research,2016,163:110-118.
APA	Tahir, Muhammad,Lv, Yujuan,Gao, Lei,Hallett, Paul D.,&Peng, Xinhua.(2016).Soil water dynamics and availability for citrus and peanut along a hillslope at the sunjia red soil critical zone observatory (czo).Soil & tillage research,163,110-118.
MLA	Tahir, Muhammad,et al."Soil water dynamics and availability for citrus and peanut along a hillslope at the sunjia red soil critical zone observatory (czo)".Soil & tillage research 163(2016):110-118.

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