Seasonal pattern of total soil respiration in an age series of Eucalypt plantation and mixed broad-leaved forest in tarai belt of Kumaun Himalaya
Rates of C02 efflux under plantations of 1-yr to 8-yr-old Eucalyptus (the hybrid E. tereticornis Sm.) and in adjacent natural mixed broad-leaved forest were measured by alkali absorption method. The seasonal pattern of soil respiration was similar in natural forest and the plantations with a maximum during the the rainy season, intermediate during the summer season and a minimum during the winter season. Soil respiration and various soil physical characteristics decreased as a result of reafforestation with Eucalyptus and there was a further decrease with increasing age of the plantation. Among the edaphic conditions, soil organic C total N, P, K, soil moisture and porosity positively affected total soil respiration, while bulk density inversely affected the same.
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