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Recognizing the role of plant species composition in the modification of soil nutrients and water in rubber agroforestry systems
Wu, Junen1; Zeng, Huanhuan1,2; Zhao, Fan1; Chen, Chunfeng1; Liu, Wenjie1; Yang, Bin1; Zhang, Wanjun1,2
2020
Source PublicationSCIENCE OF THE TOTAL ENVIRONMENT
ISSN1879-1026
Volume723Pages:-
AbstractReliable guidance for crop selection and related management to achieve sustainable soil resource use in rubber agroforestry systems is limited. One important reason for this limited guidance is that our understanding of the effects of different plant functional groups on soil resources is still insufficient. Here, to examine the effects of the species composition of trees, shrubs and herbs on soil nutrients and soil water with increases in the complexity of the plant community structure, we measured the soil nutrient concentrations (i.e., C, N, P, K, Ca and Mg), soil water content and soil water residence time (with stable hydrogen and oxygen isotope tracers) at six soil depths in a monoculture rubber plantation, four multi-species rubber agroforestry systems, and a tropical rainforest. As the plant species composition increased, the soil C and N increased. The soil water content also increased with increases in soil C and N. However, the effects of plant species composition on the soilwater content gradually changed from positive to negative, especially under the effects of herb species, which could accelerate soil water drainage and hence shorten the soil water residence time. Therefore, the faster water infiltration and potentially higher flow of soil water in complex plant communities increased the risk and magnitude of mineral nutrient leaching. In addition, as the plant composition increased, plant competition decreased the concentration of soil nutrients, especially soil P, K and Ca. In general, plant interspecific interactions definitively decreased soil mineral nutrients as the plant composition increased, and the effects of tree, shrub and herb species on soil nutrients and soil water differed and sometimes appeared contradictory. However, the effects of plant species composition on soil gradually weakened with increases in soil depth. (C) 2020 Elsevier B.V. All rights reserved.
KeywordMean residence time Plant competition Plant species composition Plant-soil interaction Soil macronutrient Stable hydrogen and oxygen isotopes
Subject AreaEnvironmental Sciences & Ecology
DOI10.1016/j.scitotenv.2020.138042
Indexed BySCI
Language英语
WOS IDWOS:000535899100009
Citation statistics
Document Type期刊论文
Identifierhttp://ir.xtbg.org.cn/handle/353005/11696
Collection2012年后新成立研究组
Affiliation1.Chinese Acad Sci, CAS Key Lab Trop Forest Ecol, Xishuangbanna Trop Bot Garden, Menglun 666303, Yunnan, Peoples R China
2.Chinese Acad Sci, Ctr Plant Ecol, Core Bot Gardens, Menglun 666303, Yunnan, Peoples R China
3.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
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Wu, Junen,Zeng, Huanhuan,Zhao, Fan,et al. Recognizing the role of plant species composition in the modification of soil nutrients and water in rubber agroforestry systems[J]. SCIENCE OF THE TOTAL ENVIRONMENT,2020,723:-.
APA Wu, Junen.,Zeng, Huanhuan.,Zhao, Fan.,Chen, Chunfeng.,Liu, Wenjie.,...&Zhang, Wanjun.(2020).Recognizing the role of plant species composition in the modification of soil nutrients and water in rubber agroforestry systems.SCIENCE OF THE TOTAL ENVIRONMENT,723,-.
MLA Wu, Junen,et al."Recognizing the role of plant species composition in the modification of soil nutrients and water in rubber agroforestry systems".SCIENCE OF THE TOTAL ENVIRONMENT 723(2020):-.
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