Soil nutrient loss due to tuber crop harvesting and its environmental impact in the North China Plain

doi:10.1016/S2095-3119(15)61268-0

CORC > 中国农业科学院 > 农业环境与可持续发展研究所 > 生态安全研究室

	Soil nutrient loss due to tuber crop harvesting and its environmental impact in the North China Plain
	Yu Han-qing 1; Li Yong 1; Zhou Na 1; Chappell, Adrian 2; Li Xiao-yu 1; Poesen, Jean 3
刊名	JOURNAL OF INTEGRATIVE AGRICULTURE
	2016
卷号	15 期号:7 页码:1612-1624
关键词	soil nutrient losses potato sweet potato crop harvesting water pollution
ISSN号	2095-3119
DOI	10.1016/S2095-3119(15)61268-0
通讯作者	Yu Han-qing
英文摘要	Soil loss due to crop harvesting (SLCH) is a soil erosion process that significantly contributes to soil degracthtion in croplands. However, little is known about soil nutrient losses caused by SLCH and its environmental impacts. In the North China Plain area, we measured the losses of soil organic carbon (SOC) and nitrogen as well as phosphorus due to SLCH and assessed their relationship with soil particle size composition, agronomic practices and soil moisture content. Our results show that the losses by harvesting potato of SOC, total nitrogen (TN), available nitrogen (AN), available phosphorus (AP) and total phosphorus (TP) were 1.7, 1.8, 1.8, 15.9 and 14.1 times compared by harvesting sweet potato, respectively. The variation of SOC, N and P loss by SLCH are mainly explained by the variation of plant density (PD) (17-50%), net mass of an individual tuber (M-crop/p) (16-74%), soil clay content (34-70%) and water content (19-46%). Taking into account the current sewage treatment system and the ratio of the nutrients adhering to the tubers during transportation from the field (NTRP/SP), the loss of TN and TP by harvesting of potato and sweet potato in the North China Plain area amounts to 3% N and 20% P loads in the water bodies of this region. The fate of the exported N and P in the sewage treatment system ultimately controls the contribution of N and P to the pollution of lakes and rivers. Our results suggest that a large amount of SLCH-induced soil nutrient export during transportation from the field is a potential pollutant source for agricultural water for vast planting areas of tuber crops in China, and should not be overlooked.
学科主题	Agriculture, Multidisciplinary
语种	英语
出版者	ELSEVIER SCI LTD
WOS记录号	WOS:000380178900020
内容类型	期刊论文
源URL	[http://111.203.20.206/handle/2HMLN22E/19721]
专题	农业环境与可持续发展研究所_生态安全研究室
作者单位	1.Chinese Acad Agr Sci, Inst Environm & Sustainable Dev Agr, Agr Clean Watershed Res Grp, Beijing 100081, Peoples R China 2.CSIRO Land & Water Natl Res Flagship, Canberra, ACT 2601, Australia 3.Katholieke Univ Leuven, Div Geog, B-3001 Heverlee, Belgium
推荐引用方式 GB/T 7714	Yu Han-qing,Li Yong,Zhou Na,et al. Soil nutrient loss due to tuber crop harvesting and its environmental impact in the North China Plain[J]. JOURNAL OF INTEGRATIVE AGRICULTURE,2016,15(7):1612-1624.
APA	Yu Han-qing,Li Yong,Zhou Na,Chappell, Adrian,Li Xiao-yu,&Poesen, Jean.(2016).Soil nutrient loss due to tuber crop harvesting and its environmental impact in the North China Plain.JOURNAL OF INTEGRATIVE AGRICULTURE,15(7),1612-1624.
MLA	Yu Han-qing,et al."Soil nutrient loss due to tuber crop harvesting and its environmental impact in the North China Plain".JOURNAL OF INTEGRATIVE AGRICULTURE 15.7(2016):1612-1624.