Impacts of mollic epipedon thickness and overloaded sediment deposition on corn yield in the Chinese Mollisol region

doi:10.1016/j.agee.2018.02.010

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	Impacts of mollic epipedon thickness and overloaded sediment deposition on corn yield in the Chinese Mollisol region
	Wei Hu 1,3; Zhizhen Feng 2; Fenli Zheng 1,2; Guifang Li 1,3; Ximeng Xu 2; Zheng, FL (reprint author), Inst Soil & Water Conservat, 26 Xinong Rd, Yangling 712100, Shaanxi, Peoples R China.
刊名	AGRICULTURE ECOSYSTEMS & ENVIRONMENT
	2018
卷号	257 页码:175-182
关键词	Mollic Epipedon Thickness Overloaded Sediment Deposition Corn Yield Equation Fitting Chinese Mollisol Region
ISSN号	0167-8809
DOI	10.1016/j.agee.2018.02.010
文献子类	Article
英文摘要	Topsoil loss and overloaded sediment deposition profoundly influence soil productivity. Understanding the changes in crop yield with the decrease of topsoil thickness and the increase of sediment deposition depth is crucial to elucidate the effects of soil erosion and deposition on soil productivity. However, little information is available concerning how mollic epipedon thickness and overloaded sediment deposition affect crop yield in the Mollisol region of Northeast China. The objectives of this study were to quantify the effects of mollic epipedon thickness and sediment deposition depth on corn (Zea mays L.) yield in the Mollisol region of Northeast China. Simulated field experiments, including seven mollic epipedon thicknesses (0, 5, 10, 15, 20, 40 and 60 cm) and five sediment deposition depths (0, 7.5, 15, 22.5 and 30 cm) were conducted in two independent experiments, respectively. The results showed that corn yield reduced as mollic epipedon thickness decreased, and corn yield reduced more sharply when mollic epipedon thickness was less than 20 cm. Compared with the control treatment with 60 cm mollic epipedon, the corn yield reductions were 8.2%, 15.8%, 21.3% and 24.2%, respectively, for the treatments with 15, 10, 5 and 0 cm mollic epipedon. Moreover, the negative impacts of overloaded sediment deposition at the corn seeding stage on corn yield were also analysed in this study. The corn yield significantly decreased as sediment deposition depth increased. Compared with the control treatment without sediment deposition, the corn yield was decreased by 31.7% for the treatment with 30 cm sediment deposition depth. Additionally, a logistic function between corn yield and mollic epipedon thickness and a linear function between corn yield and sediment deposition depth were fitted. Cross-validation implied that the two equations had acceptable accuracy. Therefore, prevention of soil erosion and reduction of adverse influences of overloaded sediment deposition are cornerstones of sustainable agriculture in the Chinese Mollisol region.
学科主题	Agriculture ; Environmental Sciences & Ecology
出版地	PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS
语种	英语
出版者	ELSEVIER SCIENCE BV
WOS记录号	WOS:000428005800019
资助机构	National Key R&D Program of China [2016YFE0202900] ; National Key R&D Program of China [2016YFE0202900] ; National Natural Science Foundation of China [41571263] ; National Natural Science Foundation of China [41571263] ; National Key R&D Program of China [2016YFE0202900] ; National Key R&D Program of China [2016YFE0202900] ; National Natural Science Foundation of China [41571263] ; National Natural Science Foundation of China [41571263]
内容类型	期刊论文
源URL	[http://ir.iswc.ac.cn/handle/361005/8272]
专题	水保所科研产出--SCI_2018--SCI
通讯作者	Zheng, FL (reprint author), Inst Soil & Water Conservat, 26 Xinong Rd, Yangling 712100, Shaanxi, Peoples R China.
作者单位	1.Chinese Acad Sci, Inst Soil & Water Conservat, Yangling 712100, Shaanxi, Peoples R China 2.Northwest A&F Univ, Inst Soil & Water Conservat, State Key Lab Soil Eros & Dryland Fanning Loess P, Yangling 712100, Shaanxi, Peoples R China 3.MWR, Yangling 712100, Shaanxi, Peoples R China
推荐引用方式 GB/T 7714	Wei Hu,Zhizhen Feng,Fenli Zheng,et al. Impacts of mollic epipedon thickness and overloaded sediment deposition on corn yield in the Chinese Mollisol region[J]. AGRICULTURE ECOSYSTEMS & ENVIRONMENT,2018,257:175-182.
APA	Wei Hu,Zhizhen Feng,Fenli Zheng,Guifang Li,Ximeng Xu,&Zheng, FL .(2018).Impacts of mollic epipedon thickness and overloaded sediment deposition on corn yield in the Chinese Mollisol region.AGRICULTURE ECOSYSTEMS & ENVIRONMENT,257,175-182.
MLA	Wei Hu,et al."Impacts of mollic epipedon thickness and overloaded sediment deposition on corn yield in the Chinese Mollisol region".AGRICULTURE ECOSYSTEMS & ENVIRONMENT 257(2018):175-182.