内蒙古羊草草原土壤净氮矿化研究

doi:10.11820/dlkxjz.2005.02.004

地理科学进展 ›› 2005, Vol. 24 ›› Issue (2): 30-37.doi: 10.11820/dlkxjz.2005.02.004

内蒙古羊草草原土壤净氮矿化研究

杨小红, 董云社, 齐玉春, 耿元波, 刘立新

中国科学院地理科学与资源研究所, 北京100101

收稿日期:2004-12-01 修回日期:2005-02-01 出版日期:2005-03-25 发布日期:2005-03-25
作者简介:杨小红(1973-),女,博士生,主要从事氮素生物地球化学循环研究。E-mail:xhyang@igsnrr.ac.cn
基金资助:
中国科学院知识创新重大项目(KZCX1-SW-01-04);国家重点基础研究发展规划项目(2002CB412503);中国科学院地理科学与资源研究所知识创新项目(CXIOG-E01-03-01)。

Soil Net Nitrogen Mineralization in an Aneulolepidium Chinensis Grassland, Inner Mongolia

YANG Xiaohong, DONG Yunshe, QI Yuchun, GENG Yuanbo, LIU Lixin

Institute of Geographical Sciences and Natural Resources Research, CAS, Beijing 100101, China

Received:2004-12-01 Revised:2005-02-01 Online:2005-03-25 Published:2005-03-25

摘要/Abstract

摘要：

采用树脂芯方法于2004年雨季期间对内蒙古锡林河流域羊草草原土壤的净氮矿化进行了研究，探讨了雨季期间田间培养时间长度对测定结果的影响，分析了实验方法对土壤氮转化过程的干扰。结果表明，研究期间羊草草原土壤净氮矿化量为4.44 KgN.ha^-1，平均净氮矿化率为0.12 KgN.ha^-1.d^-1；土壤湿度是控制土壤净氮矿化率的重要环境因子之一，土壤净氮矿化率与水分变化呈正相关关系(R=0.67, P=0.22)；雨季期间，培养时间的长度对净氮矿化测定影响较大，连续培养37天土壤净氮矿化量测定值明显偏高；树脂芯方法对实验土壤干扰较小，是田间条件下研究温带草原土壤净氮矿化的有效方法。

关键词: 净氮矿化, 树脂芯方法, 田间培养, 羊草草原

Abstract:

Nitrogen mineralization is one of the most important processes in the nitrogen cycling. The soil net nitrogen mineralization in an Aneulolepidium Chinensis grassland was studied using the resin-core technique from July 20 to August 26, 2004. Influences caused by different length of incubation intervals and the experimental disturbance to soil nitrogen transformation processes were also discussed in the paper. The Aneulolepidium Chinensis grassland locates in the Xilin River Basin of Inner Mongolia, China. The results showed that the accumulated amount of net nitrogen mineralization was 4.44 KgN.ha-1 during the study period; average daily rate was 0.12 KgN.ha-1.d-1. The length of incubation intervals brings significant impact on net N mineralization measurement. After 37 day continued incubation, the amount of net nitrogen mineralization was 14.07 KgN.ha-1; the measurement was influenced greatly by the root decomposition. The net N mineraliazation rate correlated with soil moisture (R=0.67, P=0.22). Resin-core incubation technique causes little disturbance to the grassland soil and is a good method to study the net N mineralization of the temperate grassland in field.

Key words: Aneulolepidium Chinensis grassland, field incubation, net nitrogen mineralization, resin-core technique

杨小红, 董云社, 齐玉春, 耿元波, 刘立新. 内蒙古羊草草原土壤净氮矿化研究[J]. 地理科学进展, 2005, 24(2): 30-37.

YANG Xiaohong, DONG Yunshe, QI Yuchun, GENG Yuanbo, LIU Lixin. Soil Net Nitrogen Mineralization in an Aneulolepidium Chinensis Grassland, Inner Mongolia[J]. PROGRESS IN GEOGRAPHY, 2005, 24(2): 30-37.

参考文献

[1] Ingestad T. Plant growth in relation to nitrogen supply. Clark F E, Rosswall T (eds). Terrestrial Nitrogen Cycles. Stockholm: Ecol Bull, 1981,33: 268~271.

[2] Jarvis S C. Future trends in nitrogen research. Plant and Soil, 1996, 181: 47~56.

[3] 齐玉春, 董云社, 耿元波等. 我国草地生态系统碳循环研究进展. 地理科学进展, 2003,22(4):342~352.

[4] Eno C. Nitrate production in the field by incubating the soil in polyethylene bags. Soil Science of America Proceeding, 1960,24:277~279.

[5] Raison R J, Connell M J, Khanna P K. Methodology for studying fluxes of soil mineral N in situ. Soil Biology and Biochemistry, 1987,19(5): 521~530.

[6] Hübner C, Redl G, Wurst F. In situ methodology for studying N-mineralization in soils using anion exchange resins. Soil Biology and Biochemistry, 1991,23:701~702.

[7] 韩兴国, 李凌浩,黄建辉主编. 生物地球化学概论. 北京：高等教育出版社,1999.197~231.

[8] 沙丽清,孟盈, 冯志立等. 西双版纳不同热带森林土壤氮矿化和硝化作用研究. 植物生态学报, 2000,24(2):152~156.

[9] 田昆,陈宝昆,贝荣塔等. In-situ方法在研究退化土壤氮库时空变化中的应用. 生态学报, 2003, 23(9): 1937~1943.

[10] 田昆, 常凤来, 莫剑锋等. 原状土就地培养取样法定位研究田间土壤氮动态变化. 植物营养与肥料学报, 2004,10(2):143~147.

[11] Li GuiCai, Han XingGuo, Huang JianHui. N mineralization and Nitrification in a Primary Lithocarpus Xylocarpus Forest and Degraded Vegetation in the Ailao Mountain, Yunnan Province. Acta Botanica Sinica, 2004,46(2): 194~201.

[12] 白永飞, 陈佐忠. 锡林河流域羊草草原植物种群和功能群的长期变异性及其对群落稳定性的影响. 植物生态学报, 2000, 24(6):641~647.

[13] 李绍良, 陈有君. 锡林河流域栗钙土及其物理性状与水分动态的研究. 中国草地, 1999, 3:71~76.

[14] Bhogal A, Hatch D J, Shepherd M A et al. Comparison of methodologies for field measurement of net nitrogen mineralization in arable soils. Plant and Soil, 1999,207:15~28.

[15] Hatch D J, Jarvis S C, Parkinson R J. Concurrent measurements of net mineralization, nitrification, denitrification and leaching from field incubated soil cores. Biology and Fertility of Soils, 1998,26:323~330.

[16] 刘光崧主编. 土壤理化分析与剖面描述. 北京: 中国标准出版社. 1996.

[17] Franzluebbers A J, Haney R L, Honeycutt C W et al. Climatic influences on active fractions of soil organic matter. Soil Biology & Biochemistry, 2001, 33:1103~1111.

[18] 陈佐忠,黄德华. 内蒙古锡林河流域羊草草原与大针茅草原地下部分生产力和周转值的测定.草原生态系统研究(第2集).北京:科学出版社,1988.132~138.

[19] Hatch D J, Jarvis S C, Reynolds S E. An assessment of the contribution of net mineralization to N cycling in grass swards using a field incubation method. Plant and Soil, 1991,138: 23~32.

[20] Gill K, Jarvis S C, Hatch D J. Mineralization of nitrogen in long-term pasture soils: effects of management. Plant and Soil, 1995,172,153~162.

[21] Wu G, Toda H, Haibara K et al. The effects of nitrogen mineralization on water-soluble ions of forests. Journal of Japan Forest Society, 1998, 80: 21~26.

[22] Owen J S, Wang M K, Sun H L et al. Comparison of soil nitrogen mineralization and nitrification in a mixed grassland and forested ecosystem in central Taiwan. Plant and soil, 2003,251: 167~174.

[23] 李贵才, 韩兴国, 黄建辉等. 森林生态系统土壤氮矿化影响因素研究进展. 生态学报, 2001,21(7): 1187~1195.

[24] 王常慧,邢雪荣, 韩兴国. 温度和湿度对我国内蒙古羊草草原土壤净氮矿化的影响. 生态学报, 2004, 24(11):2472~2476.

[25] Friedel J K, Gabel D. Microbial biomass and microbial C: N ratio in bulk soil and buried bags for evaluating in situ net N mineralization in agricultural soils. Journal of Plant Nutrition and Soil Science, 2001, 164:673~679.

[26] Vor T, Brumme R. N2O Losses result in underestimation of in situ underestimation on net N mineralization. Soil Biology and Biochemistry, 2002,34:541~544.

[27] Ledgard S F, Jarvis S C, Hatch D J. Short-term nitrogen fluxes in grassland soils under different long-term nitrogen management regimes. Soil Biology and Biochemistry, 1998,30: 1233~1241.

[28] Adams P, Polglase P, Attiwil P et al. In situ studies of nitrogen mineralization and uptake in forest soils: some comments on methodology. Soil Biology and Biochemistry, 1989,21: 423~429.

[29] Hatch D J, Bhogal A, Lovell R D et al. Comparisons of different methodologies for field measurement of net nitrogen mineralization in pasture soils under different soil conditions. Biology and Fertility of Soils, 2000, 32:287~293.

内蒙古羊草草原土壤净氮矿化研究

Soil Net Nitrogen Mineralization in an Aneulolepidium Chinensis Grassland, Inner Mongolia

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