|本期目录/Table of Contents|

[1]张明锦,陈良华,张健,等.马尾松人工林林窗内土壤动物对凋落物微生物生物量的影响[J].应用与环境生物学报,2016,22(01):35-42.[doi:10.3724/SP.J.1145.2015.06001]
 ZHANG Mingjin,CHEN Lianghua,ZHANG Jian,et al.Effects of soil fauna on microbial biomass in decomposing litter under artificial masson pine (Pinus massoniana) forest gap[J].Chinese Journal of Applied & Environmental Biology,2016,22(01):35-42.[doi:10.3724/SP.J.1145.2015.06001]
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马尾松人工林林窗内土壤动物对凋落物微生物生物量的影响()
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《应用与环境生物学报》[ISSN:1006-687X/CN:51-1482/Q]

卷:
22卷
期数:
2016年01期
页码:
35-42
栏目:
研究论文
出版日期:
2016-02-25

文章信息/Info

Title:
Effects of soil fauna on microbial biomass in decomposing litter under artificial masson pine (Pinus massoniana) forest gap
作者:
张明锦 陈良华 张健 杨万勤 李勋 张艳 刘华
1四川农业大学生态林业研究所,华西雨屏区生态环境监测站 成都 611130
2四川省长江上游生态安全协同创新中心 成都 611130
Author(s):
ZHANG Mingjin1 CHEN Lianghua1 2 ZHANG Jian1 2** YANG Wanqin1 2 LI Xun1 ZHANG Yan1 & LIU Hua1
1Monitoring Station for Eco-environments in the Rainy Zone of Southwest China, Institute of Ecology & Forestry, Sichuan Agricultural University, Chengdu 611130, China; 2Collaborative Innovation Center of Ecological Security in the Upper Reaches of Yangtze River, Chengdu 611130, China
关键词:
微生物生物量土壤动物凋落物分解林窗孔径排除法马尾松人工林
Keywords:
microbial biomass soil fauna litter decomposition forest gap aperture exclusion method masson pine plantation
分类号:
S714.3 : S718.556
DOI:
10.3724/SP.J.1145.2015.06001
摘要:
选择长江上游人工采伐形成的7种不同大小的马尾松人工林林窗(G1:100 m2;G2:225 m2;G3:400 m2;G4:625 m2;G5:900 m2;G6:1 225 m2;G7:1 600 m2),探讨不同林窗大小、位置和凋落物分解时间下土壤动物对凋落物微生物生物量的影响. 结果显示:中等林窗(G4和G5)内,土壤动物显著影响了凋落物的微生物生物量氮(MBN)(P < 0.05),MBN分别增加了28.16%和26.18%. 同时,林窗边缘的土壤动物使凋落物的MBN增加了29.06%(P < 0.05). 此外,分解30 d,土壤动物使凋落物的MBN增加了26.52%(P < 0.05);分解90 d,土壤动物使凋落物中微生物生物量碳(MBC)显著增加了49.10%(P < 0.05);但在180 d时,土壤动物显著降低了MBC(P < 0.05). 这些结果说明,在马尾松人工林林窗内马尾松凋落物分解初期,土壤动物对微生物生物量的增加有一定的促进作用,但其作用大小受到林窗大小、林窗位置和凋落物分解时间的影响而表现出一定的差异. (图2 表6 参35)
Abstract:
In order to understand the effects of soil fauna on litter decomposition under forest gaps, we conducted litter decomposition experiment to study the interactions between soil fauna and microbial biomass in decomposing litter under masson pine (Pinus massoniana) forest gaps. Masson pine needle litter were respectively put into litterbags of 3-mm mesh size and 0.04-mm mesh size, and incubated in the forest floor of 100 m2 (G1), 225 m2 (G2), 400 m2 (G3), 625 m2 (G4), 900 m2 (G5), 1 225 m2 (G6) and 1 600 m2 (G7) artificial gaps in the masson pine plantations located in the upper reaches of Yangtze River. Litterbags with 3-mm mesh size were set as the control, whereas litterbags with 0.04-mm mesh size were used to exclude soil fauna. The results indicated that effects of soil fauna on microbial biomass carbon (MBC) and microbial biomass nitrogen (MBN) in decomposing litter depended on the gap size, sampling location and decomposition time, as well as their interactive effect. In medium size gaps (G4 and G5), soil fauna increased the MBN in decomposing litter by 28.16% and 26.18%, respectively. Meanwhile, gap location influenced the effects of soil fauna on MBN in decomposing litter, soil fauna at the edge of the forexample forest gap increased the MBN in decomposing litter by 29.06%. In addition, the effects of soil fauna on microbial biomass carbon and nitrogen in decomposing litter varied with decomposing time. After 30-d decomposition, MBN in decomposing litter with soil fauna increased by 26.52%. After 90-d decomposition, soil fauna significantly increased MBC by 49.10%. However, after 180-d decomposition, soil fauna significantly inhibited MBC. The results suggest that the effect of soil fauna on microbial biomass in decomposing masson pine litter depends on gap size, the gap location, decomposition time, and their interactions.

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更新日期/Last Update: 2016-02-25