Arid
DOI10.1002/eco.1265
Comparison of hydraulic behaviour of unvegetated and vegetation-stabilized sand dunes in arid desert ecosystems
Wang, Xin-ping1; Quan, Gui-jing1; Pan, Yan-xia1; Hu, Rui1; Zhang, Ya-feng1; Tedeschi, Anna2; Basile, Angelo2; Comegna, Alessandro3; Coppola, Antonio3; de Mascellis, Roberto2
通讯作者Wang, Xin-ping
来源期刊ECOHYDROLOGY
ISSN1936-0584
EISSN1936-0592
出版年2013
卷号6期号:2页码:264-274
英文摘要

Revegetation was one of most successful measures to restore desert sand dunes and to improve regional eco-environments in the Tengger Desert, Northwest China. The potential for soil moisture replenishment by precipitation in the revegetation restored desert ecosystems is influenced strongly by the hydraulic properties of the surface soils. Steady-state infiltration rates from tension disc infiltrometer were measured at revegetation restored desert soils (VS) and unvegetated sand dunes (SD), respectively. Results indicated that the site specific VS and SD hydraulic properties differed significantly. Compared with SD, the long term VS has the effect of decreasing the hydraulic conductivity of the surface soil, while increasing the capillary effect on the infiltration rate. Averagely, the hydraulic conductivity of VS was 0 center dot 43 times of SD at the near saturation conditions. At VS, tension infiltration were dominated by capillarity effect more than that of SD, which were ascribed to the differences in soil properties where the former has a higher amount of finer particles, organic matters content and lower bulk densities. Accordingly, the hydraulically functioning mean pore sizes were larger at SD, where the gravity effect dominated the tension infiltration process. Therefore, in the study area under the pulse precipitation events in the growing seasons, VS contains more soil water by capillarity effect than SD does, which would contribute to shallow rooted herbage and cryptogam water consumption. Nevertheless, looking at the whole soil profile, for the actual rainfall water regimes, VS has insignificant effects on the soil profile water regime, with unchanged deep fluxes. Copyright (c) 2012 John Wiley & Sons, Ltd.


英文关键词soil hydraulic properties steady-state infiltration tension-disc infiltrometer revegetation restored desert ecosystems
类型Article
语种英语
国家Peoples R China ; Italy
收录类别SCI-E
WOS记录号WOS:000317676600010
WOS关键词TENSION INFILTROMETERS ; PARAMETER EQUIVALENCE ; STEADY INFILTRATION ; UNSATURATED SOILS ; CONDUCTIVITY ; WATER ; FLOW ; PATTERNS ; EQUATION ; DISC
WOS类目Ecology ; Environmental Sciences ; Water Resources
WOS研究方向Environmental Sciences & Ecology ; Water Resources
来源机构中国科学院西北生态环境资源研究院
资源类型期刊论文
条目标识符http://119.78.100.177/qdio/handle/2XILL650/176672
作者单位1.Chinese Acad Sci, Shapotou Desert Res & Expt Stn, Cold & Arid Reg Environm & Engn Res Inst, Lanzhou 730000, Peoples R China;
2.Inst Mediterranean Agro Forestry Syst, CNR ISAFOM, I-80056 Ercolano Naples, Italy;
3.Univ Basilicata, Dept Agr & Forestry Syst Management, Hydraul Div, I-85100 Potenza, Italy
推荐引用方式
GB/T 7714
Wang, Xin-ping,Quan, Gui-jing,Pan, Yan-xia,et al. Comparison of hydraulic behaviour of unvegetated and vegetation-stabilized sand dunes in arid desert ecosystems[J]. 中国科学院西北生态环境资源研究院,2013,6(2):264-274.
APA Wang, Xin-ping.,Quan, Gui-jing.,Pan, Yan-xia.,Hu, Rui.,Zhang, Ya-feng.,...&de Mascellis, Roberto.(2013).Comparison of hydraulic behaviour of unvegetated and vegetation-stabilized sand dunes in arid desert ecosystems.ECOHYDROLOGY,6(2),264-274.
MLA Wang, Xin-ping,et al."Comparison of hydraulic behaviour of unvegetated and vegetation-stabilized sand dunes in arid desert ecosystems".ECOHYDROLOGY 6.2(2013):264-274.
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