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不同更新方式对土壤轻组有机碳的影响

发表时间:2009-08-31  浏览量:1624  下载量:750
全部作者: 邹双全,范广阔,杨智杰,何宗明,林开敏,郭玉硕
作者单位: 福建农林大学林学院;福建师范大学地理科学学院;福建农林大学西芹教学林场
摘 要: 对福建南平老龄杉木人工林及其采伐后的自然更新林、人工更新林3种林分样地土壤轻组有机碳(light fraction organic carbon, LFOC)进行研究。结果表明:不同更新方式均造成土壤轻组(light fraction, LF)含量、轻组有机碳含量和轻组有机碳分配比例下降,其中以表层土壤差异最为明显,人工更新对土壤轻组有机碳的影响最明显。土壤轻组物质主要在土壤表层聚集,老龄杉木人工林、自然更新林和人工更新林0~40 cm土层轻组含量分别占整个土层的90.9%,89.8%和86.4%;人工更新林和自然更新林0~5 cm土层轻组有机碳含量分别下降46.08%和36.13%(P<0.05),土壤轻组有机碳分配比例分别下降了25.98%和25.05%.
关 键 词: 森林土壤学;不同更新方式;轻组有机碳;分配比例
Title: The impact of different regeneration patterns on soil light fraction organic carbon
Author: ZOU Shuangquan, FAN Guangkuo, YANG Zhijie, HE Zongming, LIN Kaimin, GUO Yushuo
Organization: The School of Forestry, Fujian Agriculture and Forestry University;The School of Geographical Sciences, Fujian Normal University;The Teaching Forestry Farm of Xiqin, Fujian Agriculture and Forestry University
Abstract: Located observation of the soil light fraction organic carbon (LFOC) contents of forest land was conducted with regard to the different regeneration patterns (non-regeneration, artificial regeneration and natural regeneration) and applied to the old-growth Chinese fir plantation in Nanping, Fujian province. The results showed that the two regeneration methods both led to the decrease in the contents of light fraction (LF), light fraction organic carbon (LFOC) and the distribution proportions of LFOC. The most significant difference occurred in the surface soil, and artificial regeneration had the most influential effect on the LFOC. Soil LF was mainly accumulated in the surface layer. LF contents in 0~40 cm soil layer of the old-growth Chinese fir plantation, natural regenerated forest and artificial regenerated forest respectively accounted for 90.9%, 89.8% and 86.4% of the total soil layer. LFOC contents in 0~5 cm soil layer of artificial regenerated forest and natural regenerated forest were decreased by 46.08% and 36.13% respectively (P<0.05), and the distributions proportion of LFOC were reduced by 25.98% and 25.05% respectively.
Key words: forest soil science; different regeneration patterns; light fraction organic carbon; distribution proportion
发表期数: 2009年8月第16期
引用格式: 邹双全,范广阔,杨智杰,等. 不同更新方式对土壤轻组有机碳的影响[J]. 中国科技论文在线精品论文,2009,2(16):1704-1710.
 
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