气候变化领域集成服务门户(CCPortal): Can complementary preferential flow and non-preferential flow domains contribute to soil water supply for rubber plantation?

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DOI	10.1016/j.foreco.2020.117948
	Can complementary preferential flow and non-preferential flow domains contribute to soil water supply for rubber plantation?
	Jiang X.-J.; Zakari S.; Wu J.; Singh A.K.; Chen C.; Zhu X.; Zhang W.; Liu W.
发表日期	2020
ISSN	0378-1127
卷号	461
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 cm3 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 cm3 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. © 2020 Elsevier B.V.
关键词	Bioactivity Hydraulics Rain Rubber Rubber plantations Soil moisture Water supply Wetting Complementary relationship Dye tracer Rubber tree Soil matrices Wetting fronts Groundwater flow biomass porosity preferential flow rhizosphere soil drainage soil water water content water flow water supply wetting front Hevea Hydraulics Rain Rubber Water Supply Wetting Hevea brasiliensis
语种	英语
来源机构	Forest Ecology and Management
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/132979
推荐引用方式 GB/T 7714	Jiang X.-J.,Zakari S.,Wu J.,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.
APA	Jiang X.-J..,Zakari S..,Wu J..,Singh A.K..,Chen C..,...&Liu W..(2020).Can complementary preferential flow and non-preferential flow domains contribute to soil water supply for rubber plantation?.,461.
MLA	Jiang X.-J.,et al."Can complementary preferential flow and non-preferential flow domains contribute to soil water supply for rubber plantation?".461(2020).