Paper Information

Journal:   JOURNAL OF WATER AND SOIL (AGRICULTURAL SCIENCES AND TECHNOLOGY)   JANUARY-FEBRUARY 2017 , Volume 30 , Number 6 #A0043; Page(s) 1964 To 1977.
 
Paper: 

INFLUENCE OF VEGETATION TYPE AND LAND MANAGEMENT ON SOIL ORGANIC CARBON FRACTIONS IN GONBAD WATERSHED, HAMADAN

 
 
Author(s):  SALARI NIK KH., NAEL M.*, ASSADIAN GH., SAFARI SINEGANI A.A.
 
* FACULTY OF AGRICULTURE, BU-ALI SINA UNIVERSITY, HAMEDAN, IRAN
 
Abstract: 

Introduction: Soil organic matter is influenced strongly by vegetation cover and management, therefore it is proposed as the main indicator of soil quality and health. The changes in soil organic matter status occur much more rapidly in the labile pools than in organic C. Thus, labile pools can be used as early indicators of changes in total organic matter that will become more obvious in the longer term here. In addition, the labile fraction has a disproportionately large effect on nutrient-supplying capacity and structural stability of soils. Land management as well as soil and environmental conditions lead to the deployment of different plant communities in rangeland ecosystems, which in turn may have different effects on soil quality indicators. The main objective of this research was to investigate the influence of different vegetation covers on the quantity and quality of soil organic carbon fractions in Gonbad experimental watershed, Hamadan. Moreover, the seasonal changes of selected soil carbon fractions were investigated.
Materials and Methods: Paired Gonbad watershed in Hamedan consists of two sub-basins: in control sub-basin no grazing management is applied, while in protected sub-basin, grazing has been restricted to a very short period in late autumn since 2002. Average annual precipitation and average annual temperature in the area are 304.4 mm and 9.5
°C, respectively (5). The soil cover of the watershed consists of TypicCalcixerepts, TypicHaploxerepts and Lithic Xerorthents (9).

 
Keyword(s): ACTIVE CARBON, BASAL RESPIRATION, CARBOHYDRATE, SOIL QUALITY, VEGETATION TYPE
 
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