Effect of Thinning on Litter Decomposition and Soil of Two Stands in Changbai Mountain

doi:10.7525/j.issn.1673-5102.2015.02.018

Abstract

Abstract: With poplar-birch stand and Larch-birch stand in Changbai Mountain, we studied two stands in three kinds of thinning intensity decomposition of forest litter accumulation and features, soil physical properties and change regularity of nutrient elements, and litter and soil carbon density and their relationships with the thinning intensity. Under different thinning intensity, there were significant differences in poplarbirch stand and larchbirch stand litter accumulation and decomposition rate. Litter nutrient content had a lower trend with the increase of thinning intensity. Litter carbon content increased with the increase of thinning intensity. Soil pH increased with the increase of thinning intensity obviously. Thinning affected the soil bulk density and the water content rate less. The soil carbon content reduced, and then increased with the increase of thinning intensity. The soil carbon density decreased with the increase of thinning intensity. Therefore, thinning is the main factors on litter decomposition and soil carbon accumulation.

Key words: thinning treatment, thinning intensity, litter, nutrient content, carbon density

CLC Number:

LIANG Jing；WANG Qing-Cheng*；XU Li-Juan；WU Wen-Juan. Effect of Thinning on Litter Decomposition and Soil of Two Stands in Changbai Mountain[J]. Bulletin of Botanical Research, 2015, 35(2): 297-303.

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