干旱区生态环境知识资源中心(Arid): Effects of intercropping mulch on the content and composition of soil dissolved organic matter in apple orchard on the loess plateau

Arid

DOI	10.1016/j.jenvman.2019.109531
	Effects of intercropping mulch on the content and composition of soil dissolved organic matter in apple orchard on the loess plateau
	Zhang, Rongqin 1; Huang, Qianqian 1; Yan, Taoyu 1; Yang, Jianfeng 1; Zheng, Yue 1; Li, Huike 1,2; Li, Ming 1,2
通讯作者	Li, Huike ; Li, Ming
来源期刊	JOURNAL OF ENVIRONMENTAL MANAGEMENT
ISSN	0301-4797
EISSN	1095-8630
出版年	2019
卷号	250
英文摘要	Dissolved organic matter (DOM) is an important parameter that reflects soil fertility and quality. In this study, the effects of intercropping perennial ryegrass and straw mulch on the content, composition and spectral characteristics of soil DOM in orchards in arid and semi-arid areas were investigated by three-dimensional fluorescence excitation-emission matrix (EEM) combined with parallel factor analysis (PARAFAC). Three treatments were applied in a 6-year-old apple orchard on the Loess Plateau: (1) clean tillage (CT); (2) inter-cropping perennial ryegrass mulch (RE); (3) intercropping straw mulch (CS). Soil samples (0-10, 10-20, 20-40, 40-60, 60-80, 80-100 cm) were collected from different treatments. The total soil organic carbon (SOC) and dissolved organic carbon (DOC) content were ranked as CS > RE > CT, and decreased with soil depth. In addition, the vertical distribution of DOC with different soil depth was caused by organic matter input but not leaching. Three humic-like components and two protein-like components were identified by EEM-PARAFAC. Fluorescence spectra showed that humic-like compounds were the dominant fractions in soil DOM in the CS treatment. Fluorescence Index (FI) indicated that the proportion of plant residues and soil organic matter derived DOM ranked as CT > RE > CS and gradually decreased with soil depth. Our results highlight the key role of orchard intercropping mulch in improving the content and compositions of soil DOM through different forms of organic inputs and provide new theoretical support for the evaluation of soil fertility in orchards.
英文关键词	Intercropping mulch Orchard Dissolved organic matter EEM-PARAFAC Spectroscopic characteristics Loess plateau
类型	Article
语种	英语
国家	Peoples R China
收录类别	SCI-E
WOS记录号	WOS:000497253000064
WOS关键词	LAND-USE TYPES ; FLUORESCENCE SPECTROSCOPY ; MICROBIAL ACTIVITY ; MINERAL SURFACES ; CARBON ; WATER ; NITROGEN ; STRAW ; FRACTIONS ; DYNAMICS
WOS类目	Environmental Sciences
WOS研究方向	Environmental Sciences & Ecology
EI主题词	2019-11-15
来源机构	西北农林科技大学
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/310896
作者单位	1.Northwest A&F Univ, Coll Nat Resources & Environm, Yangling 712100, Shaanxi, Peoples R China; 2.Minist Agr, Key Lab Plant Nutr & Agrienvironm Northwest China, Yangling 712100, Shaanxi, Peoples R China
推荐引用方式 GB/T 7714	Zhang, Rongqin,Huang, Qianqian,Yan, Taoyu,et al. Effects of intercropping mulch on the content and composition of soil dissolved organic matter in apple orchard on the loess plateau[J]. 西北农林科技大学,2019,250.
APA	Zhang, Rongqin.,Huang, Qianqian.,Yan, Taoyu.,Yang, Jianfeng.,Zheng, Yue.,...&Li, Ming.(2019).Effects of intercropping mulch on the content and composition of soil dissolved organic matter in apple orchard on the loess plateau.JOURNAL OF ENVIRONMENTAL MANAGEMENT,250.
MLA	Zhang, Rongqin,et al."Effects of intercropping mulch on the content and composition of soil dissolved organic matter in apple orchard on the loess plateau".JOURNAL OF ENVIRONMENTAL MANAGEMENT 250(2019).