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Use of dye infiltration experiments and HYDRUS-3D to interpret preferential flow in soil in a rubber-based agroforestry systems in Xishuangbanna, China
Jiang, Xiao Jin; Chen, Chunfeng1; Zhu, Xiai1; Zakari, Sissou; Singh, Ashutosh Kumar; Zhang, Wanjun1; Zeng, Huanhuan1; Yuan, Zi-Qiang; He, Chenggang4; Yu, Shuiqiang5; Liu, Wenjie
2019
Source PublicationCATENA
ISSN0341-8162
Volume178Issue:xPages:120-131
AbstractThe soil hydrological process plays an important role in transporting and distributing water in soils. However, the correlation between water flow behaviors, soil physical properties, infiltration patterns of soil exhibiting different soil layers, and the variation patterns in water flow behavior in rubber-based agroforestry systems remain poorly understood. Here, we mainly used dye-tracer infiltration to classify water flow behavior and HYDRUS-3D to interpret variation patterns of water flow behaviors in a rubber-based agroforestry system in southwest China. The results showed that (1) the soil of forestry patches under Hevea brasiliensis (HB) and Citrus reticulata (CR) exhibited better soil physical properties than those with no vegetation (NV). Compared with these in the NV, the saturated soil water content and field capacity increased by 15% and 21% in CR, and by 2% and 12% in HB, respectively; while the saturated hydraulic conductivity enhanced by 584% (p < 0.001) in the CR plot and by 226% (p < 0.001) in the HB plot. Correlation analysis shows that the soil bulk density, noncapillary porosity and capillary porosity significantly affected the field capacity, saturated water-holding capacity, and saturated hydraulic conductivity. (2) the general infiltration capacity of the whole soil profile, its order of continuity and the degree of connectivity of preferential flow path networks followed the order of CR > HB > NV. Finally, (3) the infiltration flow in soil under HB and CR exhibited a faster downward wetting front and an obvious lateral flow. These infiltration patterns compensated for the insufficiency of soil water in NV and finally caused water redistribution to be more homogenized across the whole soil profile. Therefore, our findings indicated that the rubber-based agroforestry system is a successful approach for conserving water and reducing runoff in tropical regions.
KeywordHYDRAULIC-PROPERTIES WATER TRACER CARBON MODEL HETEROGENEITY MECHANISMS LANDSCAPES TRANSPORT NITROGEN
Subject AreaGeology ; Agriculture ; Water Resources
DOI10.1016/j.catena.2019.03.015
Indexed BySCI
Language英语
WOS IDWOS:000466999700013
Citation statistics
Document Type期刊论文
Identifierhttp://ir.xtbg.org.cn/handle/353005/11342
Collection中国科学院西双版纳热带植物园
2012年后新成立研究组
Affiliation1.Chinese Acad Sci, Xishuangbanna Trop Bot Garden, CAS Key Lab Trop Forest Ecol, Menglun 666303, Yunnan, Peoples R China
2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
3.Chinese Acad Sci, State Key Lab Frozen Soil Engn, Cold & Arid Reg Environm & Engn Res Inst, Lanzhou 730000, Gansu, Peoples R China
4.Chinese Acad Sci, Beiluhe Observat Stn Frozen Soil Environm & Engn, Cold & Arid Reg Environm & Engn Res Inst, Lanzhou 730000, Gansu, Peoples R China
5.Yunnan Agr Univ, Coll Tobacco Sci, Kunming 650201, Yunnan, Peoples R China
6.Nanjing Forestry Univ, Nanjing 210037, Jiangsu, Peoples R China
Recommended Citation
GB/T 7714
Jiang, Xiao Jin,Chen, Chunfeng,Zhu, Xiai,et al. Use of dye infiltration experiments and HYDRUS-3D to interpret preferential flow in soil in a rubber-based agroforestry systems in Xishuangbanna, China[J]. CATENA,2019,178(x):120-131.
APA Jiang, Xiao Jin.,Chen, Chunfeng.,Zhu, Xiai.,Zakari, Sissou.,Singh, Ashutosh Kumar.,...&Liu, Wenjie.(2019).Use of dye infiltration experiments and HYDRUS-3D to interpret preferential flow in soil in a rubber-based agroforestry systems in Xishuangbanna, China.CATENA,178(x),120-131.
MLA Jiang, Xiao Jin,et al."Use of dye infiltration experiments and HYDRUS-3D to interpret preferential flow in soil in a rubber-based agroforestry systems in Xishuangbanna, China".CATENA 178.x(2019):120-131.
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