三峡库区消落带云阳段土壤理化性质分析 |
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引用本文: | 刘兰,秦宇,王朝清.三峡库区消落带云阳段土壤理化性质分析[J].广东农业科学,2014,41(9):76-78. |
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作者姓名: | 刘兰 秦宇 王朝清 |
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作者单位: | 重庆交通大学,重庆400074 |
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基金项目: | 重庆市自然科学基金(200811A1A0120301) |
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摘 要: | 为了探讨三峡库区消落带土壤理化性质分布特征,对三峡库区消落带云阳段不同高程土壤的部分理化
指标进行测定和分析。结果表明院研究区域内土壤pH 值介于5~6 之间,呈弱酸性,为酸性紫色土;氧化还原电位均低
于200 mV,不利于植被生长;土壤的电导率介于0.2~0.5 ms/cm 之间,电导率和含水率均有随高程增加而逐渐降低的
趋势;表层土壤的有机质含量介于29.92~111.77 g/kg 之间,均值为79.40 g/kg,总磷含量介于0.2985~0.6623 g/kg,均
值为0.4782g/kg,其含量均有随高程增加逐渐增加的趋势;表层土壤总氮含量介于0.0540%~0.1605%之间,均值为
0.010%,其含量有随高程增加而逐渐降低的趋势。
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关 键 词: | 三峡库区 消落带 土壤理化性质 |
Analysis on soil physico-chemical properties of fluctuation
zone of Three Gorges reservoir area in Yunyang |
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Abstract: | In order to investigate the distribution of soil physico-chemical properties of fluctuation zone of Three
Gorges reservoir area, several soil physico-chemical properties were performed under different elevation group in Yun
Yang. The result showed that pH value of the sampling soil was 5-6, so the soil was weakly acidic, called acid purple soil.
Oxiclation-reduction potential (ORP) of the sampling soil was below 200 mV, and the soil was not conducive to the growth
of plants. Electrical conductivity of sampling soil was 0.2-0.5 ms/cm. Electrical conductivity and moisture content reduced
gradually with the elevation increasing. The content of organic matter of surface soil was 29.92 -111.77 g/kg and the
average was 79.40g/kg. The content of total phosphorus (TP) of surface soil was 0.2985-0.6623 g/kg and the average was
0.4782 g/kg. The content of organic matter and TP increased gradually with the increase of elevation. The content of total
nitrogeh (TN) of surface soil was 0.0540%-0.1605%, and the average was 0.010%. The content of TN decreased gradually
with the increase of elevation. |
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Keywords: | Three Gorges reservoir area fluctuation zone soil physico-chemical properties |
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