污泥有机氮在林地土壤中的矿化动态

王艮梅; 刘树新; 杨丽

doi:10.3969/j.jssn.1000-2006.2012.05.016

污泥有机氮在林地土壤中的矿化动态

王艮梅，刘树新，杨丽

南京林业大学学报（自然科学版） ›› 2012, Vol. 36 ›› Issue (05) : 87-91.

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南京林业大学学报（自然科学版） ›› 2012, Vol. 36 ›› Issue (05) : 87-91. DOI: 10.3969/j.jssn.1000-2006.2012.05.016

研究论文

污泥有机氮在林地土壤中的矿化动态

王艮梅¹，刘树新¹，杨丽^1,2

作者信息 +

Incubation study on nitrogen mineralization dynamics of forest soil amended with sewage sludge

WANG Genmei¹, LIU Shuxin¹, YANG Li^1,2

Author information +

文章历史 +

摘要

采用室内培养试验研究了污泥用量和培养温度对污泥有机氮矿化动态的影响。结果表明，污泥有机氮的矿化动态规律符合经典的一级动力学方程（Nm =N0 × [1 -exp (1-k×t)]），N0（培养时间t=0时污泥可矿化的有机氮量）随着温度和污泥用量的增加而增加，k（矿化速率常数）值则随温度增加而增加，随污泥用量的增加而降低。污泥用量对污泥有机氮矿化的影响可分成两个明显不同的影响范围：当污泥用量在3 %～6 %时，污泥有机氮矿化率随污泥用量增加而显著下降；当污泥用量≥6 %时，各处理间污泥有机氮矿化率基本一致，受污泥用量的影响较小。污泥有机氮的矿化作用随温度升高而增加。

Abstract

Laboratory incubation experiment was conducted to study the kinetics of N mineralization and to investigate the effect of two factors (sludge rate and incubation temperature) on N mineralization during a 16week incubation period. The results showed that N mineralization followed a one pool kinetic model (Nm=N0[1-exp(1-k×t)]). The value of N0 increased with temperature and sludge amount while value of k increased with temperature and decreased with sludge amount. The results also indicated that the effect of sludge amount on N mineralization could be separated into two ranges: when sludge was amended at the rate between 3 % to 6 %, the rate of N mineralization decreased obviously with sludge amount; when sludge was amended at the rate of ≥6 %, N mineralization changed little among treatments. It was also found that the rate of N mineralization increased with temperature.

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王艮梅，刘树新，杨丽. 污泥有机氮在林地土壤中的矿化动态[J]. 南京林业大学学报（自然科学版）. 2012, 36(05): 87-91 https://doi.org/10.3969/j.jssn.1000-2006.2012.05.016

WANG Genmei, LIU Shuxin, YANG Li. Incubation study on nitrogen mineralization dynamics of forest soil amended with sewage sludge[J]. JOURNAL OF NANJING FORESTRY UNIVERSITY. 2012, 36(05): 87-91 https://doi.org/10.3969/j.jssn.1000-2006.2012.05.016

中图分类号： S155 S718.5

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基金

收稿日期：2011-05-17修回日期：2011-11-11
基金项目：江苏省林业三项工程项目(LYSX[2010]15);江苏省自然科学基金项目(BK2007219)
第一作者：王艮梅，副教授，博士。E-mail: wangyinme920@yahoo.com.cn。
引文格式：王艮梅，刘树新，杨丽. 污泥有机氮在林地土壤中的矿化动态[J]. 南京林业大学学报:自然科学版,2012,36(5):87-91.