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外源性C、N干扰对森林凋落叶分解的影响
Authors
刘增文
张丽萍
+4 more
杜红霞
潘开文
高文俊
高祥斌
Publication date
1 January 2006
Publisher
Abstract
通过人为施加蔗糖和硝酸铵对林地进行外源性C、N干扰和凋落叶分解的原位试验,结果表明,四川岷江流域上游地区的4种典型人工林地凋落叶年分解率及其大小顺序为糙皮桦(0.449 7)>连香树(0.271 0)>云杉(0.259 4)>云南松(0.236 5);对连香树、云南松林地进行轻度的C、N干扰均可以促进微生物的活动,从而加速了凋落叶的分解,而强度的N干扰无益于凋落叶分解率的进一步增加,强度的C干扰甚至对凋落叶分解有一定的抑制作用;对糙皮桦林地,不论是C干扰还是N干扰,均使凋落叶分解率有所下降,说明该林地的
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Last time updated on 29/11/2016