Catalogo Articoli (Spogli Riviste)

OPAC HELP

Titolo:
Modeling the effects of crust on rain infiltration in vegetated sand dunesin arid desert
Autore:
Li, T; Xiao, HL; Li, XR;
Indirizzi:
Chinese Acad Sci, Cold & Arid Reg Environm & Engn Res Inst, Shapotou Desert Res Stn, Lanzhou 730000, Gansu, Peoples R China Chinese Acad Sci LanzhouGansu Peoples R China 730000 su, Peoples R China
Titolo Testata:
ARID LAND RESEARCH AND MANAGEMENT
fascicolo: 1, volume: 15, anno: 2001,
pagine: 41 - 48
SICI:
1532-4982(200101/03)15:1<41:MTEOCO>2.0.ZU;2-3
Fonte:
ISI
Lingua:
ENG
Keywords:
soil moisture; precipitation; stabilization of sand dune; Shapotou;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Agriculture,Biology & Environmental Sciences
Citazioni:
11
Recensione:
Indirizzi per estratti:
Indirizzo: Li, T Chinese Acad Sci, Cold & Arid Reg Environm & Engn Res Inst, ShapotouDesert Res Stn, W Donggang Rd 260, Lanzhou 730000, Gansu, Peoples R China Chinese Acad Sci W Donggang Rd 260 Lanzhou Gansu Peoples R China 730000
Citazione:
T. Li et al., "Modeling the effects of crust on rain infiltration in vegetated sand dunesin arid desert", ARID LAND R, 15(1), 2001, pp. 41-48

Abstract

Shapotou Desert Research Station is located at the southeast edge of Tengger Desert in China. Shapotou sand dunes have been vegetated to stabilize them. The vegetated dunes have been completely covered by a natural crust. Rain infiltration was reduced by 36% to 74% on the crusted site while there was no reduction of rain infiltration on the sandy site. The infiltration rate was positively correlated with total rainfall and negatively correlated with rain intensity. Runoff on the crusted site provided water for vegetation growth in the hollows between sand dunes. The crust significantly impeded increased soil moisture. To increase soil moisture in the surface 40 cm layer, rainfall had to be above 8.5 mm on the slopes of sand dunes on the crust site, and increased with rain intensity. In the Shapotou area, the amount of rainfall that vegetation on slopes of sand dunes could utilize, was reduced to about 40 mm per year by the crust, although the mean annual precipitation was approximately 180 mm. It is expected that vegetation cover will continuously degrade in the future. To maintain vegetative cover adequateto stabilize the active sand dune, it was necessary to break part of the crust at slope of sand dune.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 03/04/20 alle ore 11:52:27