生态环境学报Issue(7)：1143-1149,7.DOI:10.16258/j.cnki.1674-5906.2015.07.011
高山森林不同类型粗木质残体腐殖化特征
Characters of Different Type of Coarse Woody Debris Humification in An Alpine Forest
摘要
Abstract
Humification of coarse woody debris was one of the main pathways of soil formation and carbon sequestration in alpine forest ecosystems, where type of coarse woody debris and decay class could play an important role in coarse woody debris humification thanks to its insulation effect. However, the results were still not clear which limit the understanding and response of coarse woody debris humification. Therefore, three 100 m×100 m plots were sampled in a Minjiang fir (Abies faxoniana) primary forest ecosystem around 3600 m altitude in western Sichuan in August, 2013. In order to explore effects of type of coarse woody debris and different decay class, we investigated different decay class fallen logs, snags, stumps and large branches, each decay class of coarse woody debris and collected altogether 60 trees. Results clearly showed that: snag, fallen log and large branch of humus carbon, humic acid and fulvic acid carbon content increased with the change of decay levels, whereas snag humus carbon, humic acid and fulvic acid carbon content was maintaining decline. At the same time, snag, stump, large branch, fallen log, which humification degree respectively 52.93%~85.88%, 49.2%~73.68%, 54.94%~67.21% and 53.41%~68.68%. Snag, its humification degree was significantly higher than the other three types of coarse woody debris, and humification degree was the highest in the late humification (IV decay class or V decay class). For further understanding about the alpine forest ecosystem of plant and soil interaction process which is of great significance.关键词
高山森林/粗木质残体/腐烂等级/腐殖化Key words
alpine forest/coarse woody debris/decay class/humification分类
生物科学引用本文复制引用
..高山森林不同类型粗木质残体腐殖化特征[J].生态环境学报,2015,(7):1143-1149,7.基金项目
国家自然科学基金项目（31170423；31270498）；国家“十二五”科技支撑计划（2011BAC09B05）；四川省杰出青年学术与技术带头人培育项目（2012JQ0008；2012JQ0059）；中国博士后科学基金项目 （）
