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Procedural Approaches to Field Determination of Root and Microbial Respiration Contribution to CO 2 Emission by Permafrost-Affected Soils

机译:近赤毛冻土土壤对CO <下标> 2 发射的根和微生物呼吸贡献的程序方法

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In the discontinuous cryolithozone in the north of Western Siberia in forest and tundra biogeocoenoses, two field methods for individual determination of root and microbial soil respiration were tested: plant shading and root exclusion (comparison of the plots with vegetation and without it). The proportion of of root respiration in the total soil respiration in the forest biogeocoenosis was 7–50%; in the tundra, 10–50%. The plant shading method has been physiologically substantiated, is the least time-consuming, and the least damaging to soil function (moisture and temperature do not change). The proposed modification of the method (root exclusion on natural objects) demonstrated a satisfactory result, but it is not universal due to the specifics of objects.
机译:在森林和苔原生物盖环西西伯利亚北部的不连续的低温沸石中,测试了两个用于个体测定根和微生物土壤呼吸的现场方法:植物遮阳和根除(包括植被和植被的地块的比较)。 在森林生物吞咽率愈合的根本呼吸中的根呼吸比例为7-50%; 在苔原,10-50%。 植物着色方法已经在生理学上证实,是耗时最短的,并且对土壤功能的损害最小(水分和温度不会改变)。 该方法的建议修改(天然对象的根除)展示了令人满意的结果,但由于对象的细节,它不是普遍的。

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