Studying soil salinity and its relations with microtopography and vegetation at field scale

• Autorzy: Zhao C.-W. , Xu L. , Wang Z.-C. , Wang Y.-H. , Chi C.-M.
• Języki publikacji: EN

Abstrakty

EN

Spatial variation of soil salinity and sodicity is a typical characteristic of Songnen Plain grasslands in northeast China. Best management practices and grassland productivity improvement require further understanding of the relationships among the causal factors at field scale. A field soil survey for the interactions among salinity, microtopography, and vegetation was conducted on a 2.8 hectare saline sodic grassland at Da’an Sodic Land Experimental Station, Chinese Academy of Sciences, northeast China. Salinity of the soil decreases by depth increment with Na+ and HCO-3 as the dominant ions. Soil salinity and sodicity parameters measured include pH, electrical conductivity for 1 to 5 soil-water extracts (EC1:5), apparent electrical conductivity (ECa), sodium adsorption ratio, and exchangeable sodium percentage. Soil salinity is in an order of slope > mound > depression for microtopography and soil under S. corniculata community is in severe salinity, while there is no significant difference under P. australis-A. mongolica and P. australis communities. The water and salt regime in various microtopographical conditions also is discussed.

Słowa kluczowe

EN

soil salinity; relation; microtopography; vegetation community; field scale; spatial variation

• Wydawca: -
• Czasopismo: Polish Journal of Environmental Studies
• Rocznik: 2013
• Tom: 22
• Numer: 4
• Opis fizyczny: p.1227-1237,fig.,ref.

Twórcy

autor

Zhao C.-W.

• Northeast Institute of Geography and Agroecology, Chinese Academy of Sciences, Changchun 130012, China
• Graduate University of Chinese Academy of Sciences, Beijing 100049, China

autor

Xu L.

• Northeast Institute of Geography and Agroecology, Chinese Academy of Sciences, Changchun 130012, China
• Graduate University of Chinese Academy of Sciences, Beijing 100049, China

autor

Wang Z.-C.

• Northeast Institute of Geography and Agroecology, Chinese Academy of Sciences, Changchun 130012, China

autor

Wang Y.-H.

• Northeast Institute of Geography and Agroecology, Chinese Academy of Sciences, Changchun 130012, China
• Graduate University of Chinese Academy of Sciences, Beijing 100049, China

autor

Chi C.-M.

• Tarim University, Alar, Xinjiang 843300, China

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