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长江三角洲典型地区农田土壤有机质的时空变异特征及其影响因素
引用本文:朱静,黄标,孙维侠,杨荣清,邹忠,丁峰,苏健平,黄耀,金洋,毕葵森.长江三角洲典型地区农田土壤有机质的时空变异特征及其影响因素[J].土壤,2006,38(2):158-165.
作者姓名:朱静  黄标  孙维侠  杨荣清  邹忠  丁峰  苏健平  黄耀  金洋  毕葵森
作者单位:1. 南京农业大学资源与环境科学学院,南京,210095
2. 中国科学院南京土壤研究所,南京,210008
3. 江苏省如皋市农技推广中心,江苏,如皋,226500
4. 江苏省地质调查研究院,南京,210018
基金项目:江苏省自然科学基金;中国地质调查局地质调查项目;江苏省国土生态地球化学调查项目
摘    要:农田土壤有机质是评价土壤肥力和土壤质量的重要指标,同时也是全球C库的重要组成部分,其时空变化动态对土壤质量和全球气候变化有重要影响。对江苏省如皋市土壤有机质含量的分析结果表明,在空间上以东部的白蒲系(壤质水耕人为土)和南部的长青沙系(黏质潮湿雏形土)含量较高,而中西部的磨头系(砂质潮湿雏形土)、郭园系(砂质干润雏形土)和桃园系(壤砂质潮湿雏形土)含量较低,分布于东北和西北部的东陈系和搬经系(壤质潮湿雏形土)以及南部的营防系和张黄港系含量居中;近20年来(1982─2002年)该市农田土壤有机质总体上呈持续增长的趋势;1982─1997年的时空变异表现为中西部增长迅速而东部和南部增长幅度较小,但1997─2002年则以东部和南部增长较快而中西部增长幅度趋缓。本文进一步分析和讨论了影响农田土壤有机质时空变化的因子,并且提出了今后土壤管理和利用方面的建议。

关 键 词:有机质  时空变异  如皋市

Tempo-Spatial Variation of Soil Organic Matter of Farmland and Its Affecting Factors in a Typical Area of the Yangtze River Delta Region
ZHU Jing,HUANG Biao,SUN Wei-xi,YANG Rong-qing,ZOU Zhong,DING Feng,SU Jian-ping,HUANG Yao,JIN Yang and BI Kui-Sen.Tempo-Spatial Variation of Soil Organic Matter of Farmland and Its Affecting Factors in a Typical Area of the Yangtze River Delta Region[J].Soils,2006,38(2):158-165.
Authors:ZHU Jing  HUANG Biao  SUN Wei-xi  YANG Rong-qing  ZOU Zhong  DING Feng  SU Jian-ping  HUANG Yao  JIN Yang and BI Kui-Sen
Institution:1 College of Resources and Environmental Sciences, Nanjing Agricultural University, Nanfing 210095, China; 2 Institute of Soil Science, Chinese Academy of Sciences, Nanfing 210008, China; 3 Center of Agricultural Technique Service and Extension of Rugao City, Jiangsu Province, Rugao, Jiangsu 226000, China; 4 Geological Survey of Jiangsu Province, Nanfing 210018, China
Abstract:Soil organic matter (SOM) in farmland is an important index of assessing soil fertility and soil quality of the farmland and also an integral component of the globe carbon stock.Therefore,dynamic of SOM has an important influence on global climate change.This paper addresses tempo-spatial variation of SOM in Rugao City,Jiangsu Province,an area typical of the Yangtze River Delta Region.In space,loamy Stagnic Anthrosols (Baipu) and clayey Aquic Cambosols (Changqingsha) distributed in the eastern and southern parts of the area,respectively,were high in SOM content;sandy Ustic Cambosols (Guoyuan),and sandy Aqutic Cambosols (Motou) distributed in the mid-western part were low in SOM,and loamy Aquatic Cambosols (Banjing,Dongchen,and etc.) distributed in the northern and southern parts were medium in SOM.In time,SOM showed a risng trend in the past 20 years (1982-2002).From 1982 to 1997,the rising trend appeared to be a steep curve in the mid-western parts,but a flat slope in the eastern and southern parts.From 1997 to 2002,the trend,however,leveled off in the mid-western part and soared up in the eastern and southern parts.Finally,the paper further discusses and analyzes factors influencing the tempo-spatial variation of SOM and puts forward suggestions for soil management and utilization in the future.
Keywords:Soil organic matter  Temporal-spatial variation  Rugao City
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