STUDIES ON RESPIRATION OF SOILS UNDER DIFFERENT VEGETATIONS OF THE ALPINE MEADOW
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    Abstract:

    The soil samples were collected from Haibei alpine meadow ecosystem research station. The types of vegetation are Kobresia humilis meadow, Dasiphora fsuticosashrub, Elymnsrrs nutans meadow, and Fosbs meadow. Depth of sampling soil were 0-10 cm, 10-20 cm, 20-40 cm, and 40-60 cm. Data of respiratory intensity showed in table 1. Experimental results showed that intensity of soil respiration varied with the types of vegetation and presented a noticeable diurnal and nocturnal fluctuation, the diurnal respiration was stronger than nocturnal one. Data also showed that the intensity of soil respirations varied with the depth of soil. The highest respiration intensity occurred in the surface layer and gradually diminished with the increased of the soil depth. Soil respiration in four types of vegetation was correlated with the number and activity of microorganisms, enzymic activities, and soil temperature respectively. Significant correlation could be found between the soil respirations and the total N, pH. cation-exchange capacity, organic matter, available K, hydrolyzable N respectively.

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Yang Tao, Jiang Wenbo, Sun Xichun, Du Yiguang, Li Yuying. STUDIES ON RESPIRATION OF SOILS UNDER DIFFERENT VEGETATIONS OF THE ALPINE MEADOW[J]. Acta Pedologica Sinica,1989,26(2):186-192.

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  • Online: February 25,2013
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