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中国农学通报

中国农学通报 ›› 2015, Vol. 31 ›› Issue (28): 40-45.doi: 10.11924/j.issn.1000-6850.casb15030163

• 林学 园艺 园林 • 上一篇    下一篇

太湖湖滨防护林营建对土壤养分动态的影响

孙 慧1,张建锋1,单奇华2,陈光才1,吴 灏1   

  1. (1中国林科院亚热带林业研究所,浙江富阳 311400；2宜兴市农林局,江苏宜兴 214206）
  • 收稿日期:2015-03-19 修回日期:2015-06-04 接受日期:2015-07-13 出版日期:2015-10-27 发布日期:2015-10-27
  • 通讯作者: 张建锋
  • 基金资助:
    国家科技支撑专题“村镇景观建设中的生物多样性保护技术”(2012BAJ24B0504)；浙江省森林生态重点创新团队项目“水源区坡地经济林健康保育技术”(2011RS0027)；林业公益性行业科研专项“长三角水源区面源污染林业生态修复技术研究”(201104055)；中央级公益性科研院所基金重点项目“经济林区农用化学品土-水传输过程与生态调控”(RISF2013001)。

Effect of Protection Forests Construction on Soil Nutrient Dynamics in Taihu Lake Basin

Sun Hui1, Zhang Jianfeng1, Shan Qihua2, Chen Guangcai1, Wu Hao1   

  1. (1Institute of Subtropical Forestry, Chinese Academy of Forestry, Fuyang Zhejiang 311400;2Yixing Agriculture & Forestry Department, Yixing Jiangsu 214206)
  • Received:2015-03-19 Revised:2015-06-04 Accepted:2015-07-13 Online:2015-10-27 Published:2015-10-27

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摘要： 为了探讨太湖湖滨防护林建设对土壤养分动态变化的影响，在江苏宜兴市进行了环太湖防护林营建试验，分析了防护林建设前后土壤有机质、全氮、全磷、有效磷、全钾及有效钾的动态变化特征。结果表明：通过防护林建设能有效降低土壤中营养元素的含量，与农田土壤相比，防护林土壤的有机质和有效钾含量降低率分别为29.06%和26.33%，全氮、全磷和有效磷的降低率均超过30%。同时，防护林能够实现减源增汇的效果，通过减源和增汇合计，2009年10月—2011年5月，生态恢复区土壤的纯氮和纯磷负荷减少分别约46.30~69.54 g/m2和3.78~7.30 g/m2。可见，在太湖湖滨营建防护林能够起到治理面源污染、改善水质的作用。

关键词: 拉萨市, 拉萨市, 降水变化趋势, 分析

Abstract: In order to study the effect of protection forests construction on soil nutrient dynamics in Taihu Lake Basin, the experiment was implemented in Yixing City to study the changes of soil organic matter, total nitrogen, total phosphorus, available phosphorus, total potassium and available potassium. The results showed that the protection forests construction could effectively reduce the content of soil nutrients, compared with farmland soil, the reduction rates of organic matter and available potassium content of forested soil were 29.06% and 26.33%, the reduction rates of total nitrogen, total phosphorus and available phosphorus were all over 30%. Hence the research implied that protection forests construction could achieve the effect of source reduction and sink increasing for none-source pollutants, and through source reduction and sink increasing in total, from October 2009 to May 2011, the ecological restoration area of pure nitrogen and pure phosphorus load reduction reached about 46.30-69.54 g/m2 and 3.78-7.30 g/m2.

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