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OALib Journal期刊
ISSN: 2333-9721
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雪灾对武夷山毛竹林凋落物分解和养分释放的影响
DOI: 10.3969/j.issn.1000-2006.2013.06.014, PP. 69-72
Keywords: 雪灾,毛竹林,凋落物分解,养分释放
Abstract:
为了进一步研究雪灾干扰对森林生态系统物质循环与能量流动的影响,连续2a利用大样袋网袋法对武夷山3种受灾程度毛竹林样地中的凋落物分解进行了观测研究。结果显示:不同受灾程度样地凋落物分解速率随受灾程度的加重而显著加快,不同受灾样地凋落物c、n、p、k释放速率从大到小依次为重度受灾样地、中度受灾样地、轻度受灾样地。重度受灾样地中c、n、k释放速率显著快于中度、轻度受灾样地,但p释放速率无显著差异。4种养分元素中,k元素释放最快,这说明雪灾加速了毛竹林生态系统凋落物的分解和养分的释放。
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