武夷山常绿阔叶林土壤微生物量氮的动态变化

苏德森; 陈涵贞; 徐辉; 吕新; 陈丽华; 林汝楷

武夷山常绿阔叶林土壤微生物量氮的动态变化

苏德森^1,2,
陈涵贞^1,2, ,,
徐辉³,
吕新^1,2,
陈丽华^1,2,
林汝楷³

1.
福建省农业科学院中心实验室, 福建福州 350003;
2.
福建省重点公共实验室精密仪器农业测试实验室, 福建福州 350003;
3.
福建省武夷山生物研究所, 福建武夷山 354300

基金项目:

福建省科技计划项目——省属公益类科研院所基本科研专项(2010R1027-4)

详细信息

通讯作者:
陈涵贞(1956- ),女,研究员,主要从事农产品安全与农业生态环境研究(E-mail:chenhz66@163.com)

中图分类号: X171.1
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出版历程
- 收稿日期: 2012-02-22
- 修回日期: 2012-03-29
- 刊出日期: 2012-05-30

Microbial Biomass Nitrogen in Soil of Mt. Wuyi Evergreen Broad-leave Forest

SU De-sen^1,2,
CHEN Han-zhen^{1,2
, ,},
XU Hui³,
LüXin^1,2,
CHEN Li-hua^1,2,
LIN Ru-kai³

1.
Central Laboratory, Fujian Academy of Agricultural Sciences, Fuzhou, Fujian 350003, China;
2.
Key Laboratory of Test in Agricultural Field by Precision Type Instrument, Fuzhou, Fujian 350003, China;
3.
Wuyishan Institute of Biology, Wuyishan, Fujian 354300, China

摘要

摘要: 以武夷山常绿阔叶林不同土层土壤为研究对象,研究土壤微生物量氮(SMBN)、全氮(TN)动态变化特征。结果表明:常绿阔叶林土壤SMBN含量的变化表现为夏、秋季较高,春、冬季较低;而TN含量的季节变化不明显。SMBN在0~10cm表层土壤含量高于10~30cm,差异极显著(P<0.01);10~30cm土层之间差异不显著,但均表现为自上层向下显著递减的趋势。土壤微生物量氮与土壤全氮、土壤微生物量碳(SMBC)和有机碳(SOC)之间表现出极显著相关性(P<0.01),表明土壤有机质是影响土壤微生物量的重要因素。
- 武夷山 /
- 常绿阔叶林 /
- 土壤微生物量氮
Abstract: Seasonal changes and distributions of the soil microbial biomass nitrogen(SMBN) in different layers of soil in the main areas of evergreen broad-leave forest in Mt. Wuyi were studied during 2010 and 2011. The correlations among SMBN, total nitrogen(TN), organic carbon(SOC) and microbial biomass carbon(SMBC) in the soil were examined. The environmental factors affecting the results were identified. It was found that(a) SMBNs were higher in summer and autumn than in spring and winter;(b) the seasonal changes of TN was not significant;(c) SMBN of G1(0-10 cm) soil were higher than G2(10-20 cm) and G3(20-30cm);(d) SMBN was not significantly different between G2 and G3;(e) SMBN decreased from top to lower layers;and(f) SMBN, STN, SOC and SMBC in 0-30 cm soil showed a significant correlation(P<0.01). The results suggested that SMBN was significantly affected by the organic matters presented in the soil.
- Mt. Wuyi /
- evergreen broad-leave forest /
- soil microbial biomass nitrogen

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参考文献(1)

[1]	JIA G M,CAN J,WANG C Y,et al.Microbial biomass and nutrients in soil at the diferent stages of secondary forest succession in Ziwulin,northwest China[J].Forest Ecology and Management,2005,217(1):117-125.