皖东江淮丘陵县域农田土壤有机质空间变异特征
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作者单位:

(1.滁州学院土木与建筑工程学院,安徽 滁州 239000;2.滁州市农业技术推广中心,安徽 滁州 239000;3.滁州学院地理信息与旅游学院,安徽 滁州 239000)

作者简介:

顾成军(1978-),男,安徽滁州人,副教授,博士,主要从事土壤资源与遥感信息研究。E-mail:lacjg@163.com。同时为通讯作者。

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基金项目:

基金项目:国家自然科学基金(41701450);滁州学院青年人才基金项目(2013RC011);滁州学院科研启动基金项目(2015qd07)。


Spatial variability characteristics of soil organic matter at county scale of Jianghuai hilly region in the east Anhui province
Author:
Affiliation:

(1.School of Civil Engineering,Chuzhou University,ChuzhouAnhui239000;2.Chuzhou Agricultural Technology ExtensionCenter,Chuzhou Anhui239000;3.School of GeographyInformation andTourism,ChuzhouUniversity,Chuzhou Anhui239000)

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    摘要:

    基于皖东江淮丘陵滁州市 7个县域农田土壤有机质数据,运用传统统计学和地统计学方法,分析了皖东江淮丘陵县域农田土壤有机质的空间变异特征。研究结果表明,滁州市各县域农田土壤有机质平均含量介于15.16~ 19.90 g·kg -1之间,土壤有机质含量总体水平较低。变异系数为 11.0%~ 22.4%,均为中等程度变异。但不同县域农田土壤有机质的空间自相关程度和结构性影响因子存在差异。空间自相关程度方面,南谯、来安、明光、凤阳和全椒5个县域为强烈空间自相关,而定远和天长两个县域为中等空间自相关。结构性影响因子方面,南谯、全椒和明光3个县域主要受土壤质地影响,而定远、凤阳、来安和天长4个县域主要受土壤类型影响。皖东江淮丘陵各县域应结合其土壤有机质空间变异特点对土壤资源进行合理利用与保护,以提高土壤有机质含量,改善土壤质量。

    Abstract:

    The spatial variability characteristics of soil organic matter at county scale in Jianghuai hilly region of east Anhui Province was analyzed by using traditional statistical and geostatistical methods based on the soil organic matter data ofseven counties in Chuzhoucity.The results showed that the average content of soil organic matter in counties of Chuzhou ranged from 15.16 to 19.90 g·kg-1,and the overall level of soil organic matter waslow.The coefficient of variation was 11.0%~22.4%,which wasmoderate.However,spatial autocorrelation degree and structural factors of soil organicmatter in different counties weredifferent.In terms of spatial autocorrelationdegree,the five counties ofNanqiao,Laian,Mingguang,Fengyang and Quanjiao were strongly spatialautocorrelated,while the two counties of Dingyuan and Tianchangwere medium spatialautocorrelated.In terms of structuralfactors,the three counties ofNanqiao,Quanjiao and Mingguangwere mainly affected by soiltexture,while the four counties ofDingyuan,Fengyang,Laian and Tianchang were mainlyaffected by soiltypes.Therefore,the soil resources of each county in Jianghuai hilly area of east Anhui should be rational used and protected in order to improve the content of soil organic matter and soil quality.

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顾成军,高正宝,赵明伟.皖东江淮丘陵县域农田土壤有机质空间变异特征[J].中国土壤与肥料,2020,(1):39-44.

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  • 收稿日期:2019-01-27
  • 最后修改日期:
  • 录用日期:2019-03-13
  • 在线发布日期: 2020-03-30
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