Can complementary preferential flow and non-preferential flow domains contribute to soil water supply for rubber plantation? | |
Jiang, Xiao-Jin; Zakari, Sissou; Wu, Junen3; Singh, Ashutosh Kumar; Chen, Chunfeng3; Zhu, Xiai2,3; Zhang, Wanjun2,3; Liu, Wenjie3 | |
刊名 | FOREST ECOLOGY AND MANAGEMENT |
2020 | |
卷号 | 461期号:x页码:- |
关键词 | Soil matrix Dye tracer Wetting front Complementary relationship Rubber tree |
ISSN号 | 0378-1127 |
DOI | 10.1016/j.foreco.2020.117948 |
英文摘要 | Preferential flow has always been hotspot of research regarding soil water flow, biological activity, and carbon and nitrogen dynamics. However, the mechanism of water flow exchange between two adjacent zones (with and without root system) and the pattern of soil water supply for rubber are still unclear. In the present study, we considered two plots experiencing similar farming history: in the first plot we measured soil physical properties and soil volumetric water content (VWC) during rainfall, and the second plot was used to visualise water flow path and to measure root biomass. Besides, a model was developed on preferential flow domain (PFD, matching the root zone) and on non-preferential flow domain (NPFD, matching the remote root zone) to compute differences in soil properties between the PFD and NPFD. The results revealed that the dominant flow type in the PFD was preferential flow and the one in the NPFD was capillary flow. Dye stained area and wetting front rate negatively correlated with bulk density, while they positively correlated to non-capillary porosity and root biomass. Accordingly, PFD showed a quick response to rainfall. Indeed, during the rain, a lateral flow (driven by water gravity and pressure head gradient) predominantly carried water (0.95, 0.27, and 0.44 cm(3) cm(-3) for various rainfall events 1, 2, and 3, respectively) from PFD to NPFD. During the soil drainage stage, the lateral flow direction changed, and water (about 0.63, 0.30, and 0.39 cm(3) cm(-3) for rainfall events 1, 2, and 3, respectively) flowed from NPFD to PFD. As a result, PFD presented low storage and high flow characteristics compared with NPFD, suggesting this complementary relationship for water interaction between the two domains could be beneficial for rubber plants growth and development. |
学科主题 | Forestry |
语种 | 英语 |
WOS记录号 | WOS:000518873600010 |
内容类型 | 期刊论文 |
源URL | [http://ir.xtbg.org.cn/handle/353005/11660] |
专题 | 西双版纳热带植物园_2012年后新成立研究组 |
作者单位 | 1.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 2.Chinese Acad Sci, Ctr Plant Ecol, Core Bot Gardens, Menglun 666303, Yunnan, Peoples R China 3.Chinese Acad Sci, CAS Key Lab Trop Forest Ecol, Xishuangbanna Trop Bot Garden, Menglun 666303, Yunnan, Peoples R China |
推荐引用方式 GB/T 7714 | Jiang, Xiao-Jin,Zakari, Sissou,Wu, Junen,et al. Can complementary preferential flow and non-preferential flow domains contribute to soil water supply for rubber plantation?[J]. FOREST ECOLOGY AND MANAGEMENT,2020,461(x):-. |
APA | Jiang, Xiao-Jin.,Zakari, Sissou.,Wu, Junen.,Singh, Ashutosh Kumar.,Chen, Chunfeng.,...&Liu, Wenjie.(2020).Can complementary preferential flow and non-preferential flow domains contribute to soil water supply for rubber plantation?.FOREST ECOLOGY AND MANAGEMENT,461(x),-. |
MLA | Jiang, Xiao-Jin,et al."Can complementary preferential flow and non-preferential flow domains contribute to soil water supply for rubber plantation?".FOREST ECOLOGY AND MANAGEMENT 461.x(2020):-. |
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