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武夷山不同海拔植被土壤细根比根长季节动态(PDF)

《南京林业大学学报(自然科学版)》[ISSN:1000-2006/CN:32-1161/S]

Issue:
2011年06期
Page:
139-142
Column:
研究简报
publishdate:
2011-11-28

Article Info:/Info

Title:
Seasonal variations of fine root special root length along an elevation gradient in the Wuyi Mountains of southeastern China
Author(s):
QUAN Wei1YU Shaona1WANG Guobing2 RUAN Honghua 2* FANG Yanhong 3WANG Jiashe3
1. Wenzhou Vocational College of Science and Technology, Wenzhou 325006, China; 2. Jiangsu Key Laboratory of Forest Ecological Engineering, Nanjing Forestry University, Nanjing 210037, China; 3. Wuyi Mountains  National Nature Reserve in Fujian Provinc
Keywords:
Wuyi Mountainsfine rootspecial root lengthseasonal variations
Classification number :
X171.1;S718
DOI:
10.3969/j.jssn.1000-2006.2011.06.028
Document Code:
A
Abstract:
We conducted an experiment in four different elevation sites in Wuyi Mountains in a subtropical region. We measured the fine root biomass and fine root length, analyzed the fine root special root length seasonal dynamic. The results showed that:(1) Special root length of living fine root (LFRSRL) of both 0—10 cm and 10—25 cm soil layers was alpine meadows>dwarf forest>coniferous forest>evergreen broadleaf forest, which had very significant difference at different elevation (p<0.01). (2) Special root length of living fine root in 0—10 cm soil was higher than that in 10—25 cm soil layers of evergreen broadleaf forest and coniferous forest, but in 10—25 cm soil layers was higher than that in 0—10 cm soil layers of dwarf forest and alpine meadows. Special root lengths of living fine root and dead fine root had no significant difference at different soil layers (p>0.05).(3) Special root lengths of living fine root and dead fine root in both 0—10 cm and 10—25 cm soil layers of each forest displayed seasonal dynamic at different degree, but there was no significant difference in different seasons (p>0.05).

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Last Update: 2011-11-28