长江流域资源与环境 >> 2010, Vol. 19 >> Issue (z1): 143-.

• 自然资源 • 上一篇    下一篇

三峡库区典型小流域坡地土壤营养物含量研究

郭劲松,肖敏,方芳,刘京,付川,凌宏   

  1. (1.三峡库区生态环境教育部重点实验室| 重庆大学城市建设与环境工程学院| 重庆 400045; 
    2.重庆三峡学院化学与环境工程系| 重庆 万州 404000; 3.重庆市忠县科学技术局| 重庆 忠县 404300)
  • 出版日期:2010-08-23

RESEARCH IN SOIL NUTRIENT CONTENT OF SLOPING FIELD OF TYPICAL WATERSHED IN THE THREE GORGES RESERVOIR AREA〖

GUO Jinsong1| XIAO Min1| FANG Fang1| LIU Jing1| FU Chuan2| LING Hong3〖WT5   

  1. (
    1.Key Laboratory of the Three Gorges Reservoir Region’s Ecoenvironment|Ministry of Education; Faculty of Urban Construction and Environmental Engineering| Chongqing University| Chongqing 400045| China; 
    2.Department of Chemical and Environmental Engineering| Chongqing Three Gorges College| Chongqing 404000| China; 
    3.Zhongxian Bureau of Science and Technology| Chongqing 404300| China)〖
  • Online:2010-08-23

摘要:

以三峡库区重庆忠县石宝镇新政村小流域为研究区域,分析不同土地种植模式下坡地土壤营养物含量分布规律。结果表明:(1)不同土地种植模式下,土壤营养物质含量差异显著。林地和旱地土壤TN和有机质显著低于水稻田,TP显著高于水稻田;林地和旱地土壤营养物指标水平差异不显著。(2)在小流域从坡上经果林到坡下水稻田顺坡方向上,土壤有机质含量先增加后减小,总体上呈上升趋势;土壤TN的含量依次增加;土壤TP含量曲折降低,且变化幅度较小。(3)与其它地区小流域研究结果相比,新政村小流域土壤TN、TP水平与三峡库区其它小流域情况相当,低于太湖流域和滇池流域,土壤营养物质含量整体处于较低水平。

Abstract:

 A small watershed in Zhongxian county,Chongqing,was chosen to study the soil nutrient content distribution in sloping field of different planting modes.The results show that the differences of soil nutrient content between diverse planting modes are remarkable.The difference of soil nutrient content between woodland and dryland is not significant.However,the soil nitrogen and organic matters of woodland and dryland are significantly lower than that of paddy land.Soil phosphorus is significantly higher than that of paddy land.Along the top of the slope to base of the slope in the watershed,the soil nutrients show different disciplines.Soil organic matter totally increased with a relatively slower decrease after the increase.Soil nitrogen is showing an trend of gradual increase.Whereas,soil phosphorus is totally decreasing with a relatively slower increase after the decrease.Compared with the research results of watershed in other areas,the soil nitrogen and phosphorus level of this watershed are relatively lower than that of other watersheds such as Taihu lake area,Dianchi lake area and Dongting lake area.〖

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