下辽河平原潮棕壤不同粒级碳和氮分布研究

应用生态学报 ›› 2005, Vol. 16 ›› Issue (11): 2081-2085.

下辽河平原潮棕壤不同粒级碳和氮分布研究

庞祥锋^1,2, 宇万太², 苏壮¹, 张璐², 马强²

1. 沈阳农业大学, 沈阳 110161;
2. 中国科学院沈阳应用生态研究所, 沈阳 110016

收稿日期:2005-01-26 修回日期:2005-05-24 出版日期:2005-11-15 发布日期:2005-11-15
通讯作者: 宇万太
基金资助:
中国科学院知识创新工程重大项目(KZCX²-413-4)、中国科学院资源环境领域野外台站研究基金项目和中国科学院沈阳应用生态研究所知识创新工程资助项目(SCXMS0301).

Distribution of C and N in different particle fractions of meadow brown soil in lower reach of Liaohe River Plain

PANG Xiangfeng^1,2, YU Wantai², SU Zhuang¹, ZHANG Lu², MA Qiang ²

1. Shenyang Agricultural University, Shenyang 110161, China;
2. Institute of Applied Ecology, Chinese Academy of Sciences, Shenyang 110016, China

Received:2005-01-26 Revised:2005-05-24 Online:2005-11-15 Published:2005-11-15

摘要/Abstract

摘要： 采用具有不同开垦年限的0～20和20～40 cm耕层土壤,对其不同粒级的有机碳和全N分布进行了研究.结果表明,在0～20和20～40 cm耕层,＜0.002 mm粒级的有机碳含量最高,＜0.02 mm粒级含量次之,＜0.2 mm粒级含量最少.土壤全N的粒级分布规律与有机碳基本相同.在同一粒级中,有机碳和全N的各粒级分布与开垦年限没有明显的相关性.各粒级的有机碳与全N相关性极显著,在＜0.2 mm粒级的相关系数为0.74,在＜0.02 mm和＜0.002 mm分别达到了0.94和0.91.

关键词: 土壤粒级, 有机碳, 全N, 分布

Abstract: The study of meadow brown soil with different reclamation history in the lower reach of Liaohe River Plain showed that in 0～20 and 20～40 cm soil layers,<0.002 mm fraction had the highest content of organic carbon,followed by <0.02 and <0.2 mm fractions.The distribution pattern of total nitrogen was similar to that of organic carbon.There was no obvious correlation between the distribution of organic carbon and total nitrogen in different soil particle fractions and the history of reclamation,but the correlation between organic carbon and total nitrogen in different soil particle fractions was highly significant,with the correlation coefficients 0.74,0.94 and 0.91 in fractions<0.2,<0.02 and<0.002 mm,respectively.

Key words: Soil particle fraction, Organic carbon, Total nitrogen, Distribution

中图分类号:

S153.6

庞祥锋, 宇万太, 苏壮, 张璐, 马强. 下辽河平原潮棕壤不同粒级碳和氮分布研究[J]. 应用生态学报, 2005, 16(11): 2081-2085.

PANG Xiangfeng, YU Wantai, SU Zhuang, ZHANG Lu, MA Qiang . Distribution of C and N in different particle fractions of meadow brown soil in lower reach of Liaohe River Plain[J]. Chinese Journal of Applied Ecology, 2005, 16(11): 2081-2085.

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