南京林业大学学报(自然科学版) ›› 2013, Vol. 37 ›› Issue (04): 45-50.doi: 10.3969/j.issn.1000-2006.2013.04.009
囤兴建1,曲宏辉2,田 野1,方升佐1*,徐锡增1
出版日期:
2013-08-18
发布日期:
2013-08-18
基金资助:
DUN Xingjian1, QU Honghui2, TIAN Ye1, FANG Shengzuo1*, XU Xizeng1
Online:
2013-08-18
Published:
2013-08-18
摘要: 以南京长江滩地6年生杨树人工林为研究对象,设计了5种间伐处理(对照、30%、40%、50%强度的下层伐和50%强度的机械伐),分析了不同间伐处理对杨树人工林土壤无机氮、土壤水溶性有机氮(DON)和土壤微生物量氮(SMBN)含量的影响以及这三者之间的关系。结果表明:不同间伐处理对土壤无机氮素含量、土壤微生物量氮和土壤水溶性有机氮含量均有显著影响,且50%强度的下层伐和机械伐处理下三者的含量较高,其含量随季节的动态变化均呈先上升后下降的动态变化; 不同间伐处理下的3个层次中土壤有效氮素含量均表现出明显的表聚性,0~5 cm土层的有效氮素含量明显较高; 土壤有效氮素之间的相关性不显著,仅SMBN与DON、土壤硝态氮呈正相关关系。
中图分类号:
囤兴建,曲宏辉,田野,等. 间伐对长江滩地杨树人工林土壤有效氮素的影响[J]. 南京林业大学学报(自然科学版), 2013, 37(04): 45-50.
DUN Xingjian, QU Honghui, TIAN Ye, FANG Shengzuo, XU Xizeng. Effects of thinning treatments on soil available nitrogen of the poplar plantations in flooding land of Yangtze River[J].Journal of Nanjing Forestry University (Natural Science Edition), 2013, 37(04): 45-50.DOI: 10.3969/j.issn.1000-2006.2013.04.009.
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