Changes in enzyme activities of spruce (Picea balfouriana) forest soil as related to burning in the eastern Qinghai-Tibetan Plateau

	Changes in enzyme activities of spruce (Picea balfouriana) forest soil as related to burning in the eastern Qinghai-Tibetan Plateau
	Zhang, YM ; Wu, N ; Zhou, GY ; Bao, WK
刊名	APPLIED SOIL ECOLOGY
	2005
卷号	30 期号:3 页码:215_225
关键词	acid phosphatase catalase forest fire invertase peroxidase proteinase polyphenoloxidase spruce (Picea balfouriana) forest
ISSN号	0929-1393
通讯作者	Wu, N, Chinese Acad Sci, Chengdu Inst Biol, Chengdu 610041, Peoples R China.
中文摘要	The effect of forest fire on soil enzyme activity of spruce (Picea balfouriana) forest in the eastern Qinghai-Tibetan Plateau was assessed. Six specific enzymes were chosen for investigation: invertase, acid phosphatase, proteinase, catalase, peroxidase and polyphenoloxidase. It was found that the activities of invertase and proteinase were reduced by burning, but the activities of acid phosphatase, polyphenoloxidase and peroxidase increased. Meanwhile, burning significantly (P < 0.05) resulted in the decrease of concentrations of available N and K of 0-20 cm depth layer soil, and significantly (P < 0.05) decreased concentrations of organic matter content, total N and P, as well as available N, P and K in soil at both 20-40 and 4060 cm depths except for available P at 20-40 cm soil depth. These results illustrated that burning could influence the enzyme activities and chemical properties of soil not only of upper but also lower soil layers. Correlation analysis indicated that invertase activities in 0-20 cm depth layer soil were significantly positively correlated with organic matter, total N and P, as well as available N and P. Furthermore, all six enzymes studied were sensitive to fire disturbance, and thus could be used as indicators of soil quality. Our study also showed that soil enzyme activities were associated with soil depth, decreasing from top to bottom in both burned and unburned spruce forests. The distribution pattern of soil enzyme activities suggested that the rate of organic matter decomposition and nutrient cycling depended on soil depth, which had important structural and functional characteristics in nutrient cycling, dynamics and implications in plantation nutrient management. The finding that burning effects on enzyme activities and soil proper-ties between different soil layers were homogenized was attributed to the 8-years' regeneration of forest after burning. (c) 2005 Elsevier B.V. All rights reserved.
学科主题	Soil Science
收录类别	SCI
语种	英语
公开日期	2011-07-08
内容类型	期刊论文
源URL	[http://210.75.237.14/handle/351003/21772]
专题	成都生物研究所_生态研究
推荐引用方式 GB/T 7714	Zhang, YM,Wu, N,Zhou, GY,et al. Changes in enzyme activities of spruce (Picea balfouriana) forest soil as related to burning in the eastern Qinghai-Tibetan Plateau[J]. APPLIED SOIL ECOLOGY,2005,30(3):215_225.
APA	Zhang, YM,Wu, N,Zhou, GY,&Bao, WK.(2005).Changes in enzyme activities of spruce (Picea balfouriana) forest soil as related to burning in the eastern Qinghai-Tibetan Plateau.APPLIED SOIL ECOLOGY,30(3),215_225.
MLA	Zhang, YM,et al."Changes in enzyme activities of spruce (Picea balfouriana) forest soil as related to burning in the eastern Qinghai-Tibetan Plateau".APPLIED SOIL ECOLOGY 30.3(2005):215_225.