Effect of Cutting on Soil Respiration in Phyllostachy edulis Forest, Mubushan, China

TANG Xiao-lu; FAN Shao-hui; QI Liang-hua; LIU Guang-lu; GUAN Feng-ying; DU Man-yi; XU Qing-biao

To determine the effect of cutting on soil respiration in Phyllostachy edulis forest, Mubushan, Hubei Province, the soil surface CO2 flux, soil temperature and moisture at the depth of 5 cm were measured by LI-COR-8100 soil CO2 flux system, and the trenching method was applied to separate the soil respiration of source components. The result showed that the soil temperature increased significantly after cutting, but the soil moisture did not change significantly; the total soil respiration, litter respiration and mineral respiration elevated after cutting, but the root respiration decreased. The soil respiration and source components respiration were exponentially related with the soil temperature (R2=32.63%-84.50%) and linearly related with the soil moisture (R2=40.60%-93.50%), respectively. However, the combined model of soil temperature and moisture could predict the variations of soil respiration more accurately (R2=41.40%-96.20%). The increase of soil respiration mainly resulted from the increase of soil temperature after cutting.

1. Key Laboratory of Bamboo and Rattan, International Centre for Bamboo and Rattan, Beijing 100102, China

Received Date: 2012-05-23

Abstract: To determine the effect of cutting on soil respiration in Phyllostachy edulis forest, Mubushan, Hubei Province, the soil surface CO2 flux, soil temperature and moisture at the depth of 5 cm were measured by LI-COR-8100 soil CO2 flux system, and the trenching method was applied to separate the soil respiration of source components. The result showed that the soil temperature increased significantly after cutting, but the soil moisture did not change significantly; the total soil respiration, litter respiration and mineral respiration elevated after cutting, but the root respiration decreased. The soil respiration and source components respiration were exponentially related with the soil temperature (R2=32.63%-84.50%) and linearly related with the soil moisture (R2=40.60%-93.50%), respectively. However, the combined model of soil temperature and moisture could predict the variations of soil respiration more accurately (R2=41.40%-96.20%). The increase of soil respiration mainly resulted from the increase of soil temperature after cutting.

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Reference (22)

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Effect of Cutting on Soil Respiration in Phyllostachy edulis Forest, Mubushan, China

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