首页|Effects on Soil Moisture Dynamic Changes Produced by Different Land Uses on the Loess Plateau

Effects on Soil Moisture Dynamic Changes Produced by Different Land Uses on the Loess Plateau

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To study the soil moisture dynamic changes under different land uses on the Loess Plateau。 five standard runoff plots were built under typical land use types (Caragana korshinskii land， Glycine soia land。 Setaria italica land， natural grassland and de-farming grassland) in the Liudaogou Catchment。 Based on experiment data including soil moisture。 runoff and rainfall etc。 soil moisture dynamic changes under different land use types were analyzed。 The results showed: 1) The water-storage capacities of the five plots were 21。0。 -1。0。 3。3。 19。2 and 43。7 mm。 and their dynamic change tendency was accordant with that of natural rainfall; 2) The evapotranspiration capacities of the five plots were 382。0， 408。0， 401。7， 376。8 and 354。3 mm。 with their sort order being C。 korshinskii land >natural grassland>de-farming grassland >G。 soia land >S。 italica land; 3) The runoff coefficients of the five plots were 2。9， 1。9， 2。4， 4。6 and 4。1%， with their sort order being G。 soia land>S。 italica land>de-farming grassland>natural grassland> C。korshinskii land。 Therefore， de-farming land uses， such as returning farmland to forest or grassland etc， had better water use efficiency and soil and water conservation effects than the slope farmland in the Loess Plateau region。

Loess PlateauSoil MoistureLand Use Types

Jiang Na、Shao Ming-an、Hu Wei

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Center for Agricultural Water Research in China, China Agricultural University,Beijing 100083, China

State Key Laboratory of Soil Erosion and Dryland Farming on the Loess Plateau,Institute of Soil and Water Conservation,Chinese Academy of Sciences & Ministry of Water Resources, Yangling 712100, China

International conference of international conference on combating land degradation in agricultral areas;ICCLD'10;LandCon1010

Xi'an City(CN);Xi'an City(CN);Xi'an City(CN)

2010 International conference of international conference on combating land degradation in agricultral areas.

p.239-243

2010