湖北宣恩县土壤全量微量元素与有机碳和pH的关系分析——以晓关侗族乡为例

发布时间：2018-06-24 23:00

本文选题：宣恩县 + 土壤　；参考：《西南农业学报》2017年08期

【摘要】：【目的】为了揭示湖北省宣恩县晓关侗族乡土壤4种主要微量元素铁、锰、锌、铜与土壤有机碳和pH的关系,研究该地区土壤有机碳和pH对土壤这4种微量元素的影响。【方法】以湖北省恩施州宣恩县晓关侗族乡土壤为研究对象,每平方公里网格状对土壤进行采样,共采样2127份土样,实验分析了每份土壤的4种全量微量元素铁、锰、锌、铜,以及有机碳量和pH,数据分析四种土壤微量元素分别和土壤有机碳、pH的关系。【结果】土壤全量微量元素Fe、Mn、Cu的含量和有机碳显著(P0.01)相关,且线性回归均呈负相关。土壤全量微量元素Fe、Mn、Zn、Cu的含量均和pH显著(P0.01)相关,且线性回归均呈正相关。【结论】恩施宣恩县晓关侗族乡土壤有机碳的积累导致土壤全量铁、锰、铜含量有所降低,但对锌元素无显著影响;土壤酸碱度在分析结果范围内越大,导致土壤全量微量元素铁、锰、锌、铜增加。
[Abstract]:[objective] to reveal the relationship between soil organic carbon and pH and four main trace elements Fe, mn, Zn, Cu in the soil of Xiaoguan Dong nationality in Xuanen County, Hubei Province. The effects of soil organic carbon and pH on these four trace elements were studied in this area. [methods] soil samples were collected from the Xiaoguan Dong nationality of Xuanen County, Enshi Prefecture, Hubei Province. 2127 soil samples were sampled per square kilometer. Four total trace elements iron, manganese, zinc and copper in each soil were analyzed. The relationship between four kinds of soil trace elements and soil organic carbon pH was analyzed. [results] the content of total soil trace element FebMnMn-Cu was significantly correlated with organic carbon (P0.01), and the linear regression was negatively correlated. The content of soil total trace element (Fe, mn, Zn, Cu) was significantly correlated with pH (P0.01), and the linear regression was positive correlation. [conclusion] the accumulation of soil organic carbon in Xiaoguan Dong nationality in Xuanen County of Enshi decreased the total content of Fe, mn and Cu in soil. However, there was no significant effect on zinc, and the larger the soil acidity and alkalinity was, the more the total amount of trace elements Fe, mn, Zn and Cu increased.
【作者单位】：湖北省地质科学院研究院;湖北省硒生态环境效应检测中心;湖北科技学院资源环境科学与工程学院;
【基金】：湖北省国土资源厅湖北省宣恩县土地质量地球化学评价(一期)(JTD20150104) 湖北地质局2016科技支撑项目(KJ2016-8)
【分类号】：S153.6

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