| 1985—2005年聊城市土壤有机质的时空变异分析 |
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| 引用本文： | 赵鲁全.1985—2005年聊城市土壤有机质的时空变异分析[J].环境科学研究,2011,24(4):421-427. |
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| 作者姓名： | 赵鲁全 |
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| 作者单位： | 山东省国土资源厅, 山东 济南 250013;北京师范大学资源学院, 北京 100875 |
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| 基金项目： | 国土资源部-山东省国土资源厅合作项目 |
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| 摘 要： | 通过统计及地质统计学方法，研究了山东省聊城市1985—2005年土壤w(有机质)的时空变异性. 结果表明:近20年来聊城市表层土壤有机质共增加了34.31×104 t，但不同土壤类型的增幅不尽相同，本底值较低的土壤亚类有机质增加较多，本底值较高的则增加较少. 2005年w(有机质)插值结果表明，研究区w(有机质)分布存在四周高、中部低的趋势. 聊城市北部、临清县南部以及高唐与茌平县之间部分区域w(有机质)比1985年下降明显，而冠县以南及以北、茌平县东部及南部部分区域的w(有机质)增加明显. 影响土壤有机质时空变异的因素主要为土壤类型和区域内农业种植及生产管理方式的改变.
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| 关 键 词： | 土壤有机质 聊城 时空变异 |
| 收稿时间： | 2010/7/22 0:00:00 |
| 修稿时间： | 2010/11/18 0:00:00 |
Spatio-Temporal Variations of Soil Organic Matter in Liaocheng City,Shandong Province over 1985-2005 |
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| ZHAO Lu-quan.Spatio-Temporal Variations of Soil Organic Matter in Liaocheng City,Shandong Province over 1985-2005[J].Research of Environmental Sciences,2011,24(4):421-427. |
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| Authors: | ZHAO Lu-quan |
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| Affiliation: | Shandong Provincial Department of Land & Resources, Jinan 250013, China;College of Resources Science & Technology, Beijing Normal University, Beijing 100875, China |
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| Abstract: | In this study,the spatio-temporal variations of soil organic matter(SOM) contents from 1985 to 2005 in Liaocheng City,Shandong Province were analyzed using statistical and geostatistical methods.It was found that SOM increased by 343,100 tons in the last 20 years in the surface soil in Liaocheng City,although different ranges of increases were found in different soil subclasses.Soils with lower background contents of SOM increased more than those with higher background contents.The result of ordinary kriging interpolation indicated that the distribution of SOM contents had strong spatial variation in 2005,with lower contents in the center of the study area.Compared with 1985,SOM contents were significantly reduced in the northern part of Liaocheng City,the southern part of Linqing County and the area connecting Gaotang and Renping Counties.SOM contents increased in the northern and southern parts of Guan County,and in the eastern and southern parts of Renping County.The two main factors that influenced the spatial variation of SOM contents were soil types and the alteration of crop pattern and production modes. |
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| Keywords: | soil organic matter(SOM) Liaocheng City spatio-temporal variation |
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