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| 太湖流域安吉县林地养分流失评估 | |
| 引用本文： | 董敦义,张彪,张灿强,杨艳刚,潘春霞,王斌.太湖流域安吉县林地养分流失评估[J].资源科学,2011,33(8):1608-1612. |
| 作者姓名： | 董敦义 张彪 张灿强 杨艳刚 潘春霞 王斌 |
| 作者单位： | 1. 浙江省安吉县林业局,安吉,313300 2. 中国科学院地理科学与资源研究所,北京,100101 3. 中国林业科学研究院亚热带林业研究所,富阳,311400 |
| 基金项目： | 国家水体污染控制与治理科技重大专项课题：“太湖流域水生态功能分区与质量目标管理技术示范”(编号：2008ZX07526-007)。 |
| 摘 要： | 土壤侵蚀造成的营养物质迁移是太湖流域水环境质量下降的主要原因之一。为了全面认识太湖流域上游地区土壤侵蚀对流域水环境的威胁,为当地的林地经营部门的管理提供参考意见,本研究基于2007年的安吉县森林二类调查数据,采用土壤侵蚀模数与养分含量系数法,评估了安吉县林地土壤侵蚀量以及TN、TP、TK和有机质等4种养分流失量。结果表明：安吉县林地年土壤侵蚀量75.13万t,约合558.87t（/km2·a）;因土壤侵蚀每年约有657t全氮、272.95t全磷、7858t全钾和1.51万t有机质的养分流失;从林地类型来看,竹林和经济林是林地土壤侵蚀及养分流失的主体（累计贡献率77%）;而从地貌类型特征来看,90%的土壤侵蚀及养分流失来自丘陵和低山林地,76%的土壤侵蚀及养分流失来自斜坡和陡坡上的林地 |
| 关 键 词： | 林地 土壤侵蚀 养分流失 太湖流域 安吉县 |
Assessment on Soil Nutrients Loss of Forestland in Anji County of the Taihu Basin |
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| DONG Dunyi,ZHANG Biao,ZHANG Canqiang,YANG Yangang,PAN Chunxia and WANG Bin.Assessment on Soil Nutrients Loss of Forestland in Anji County of the Taihu Basin[J].Resources Science,2011,33(8):1608-1612. | |
| Authors: | DONG Dunyi ZHANG Biao ZHANG Canqiang YANG Yangang PAN Chunxia and WANG Bin |
| Institution: | Anji Forestry Bureau of Zhejiang, Anji 313300, China;Institute of Geographical Sciences and Natural Resources Research, Chinese Academy of Sciences, Beijing 100101, China;Institute of Geographical Sciences and Natural Resources Research, Chinese Academy of Sciences, Beijing 100101, China;Institute of Geographical Sciences and Natural Resources Research, Chinese Academy of Sciences, Beijing 100101, China;Anji Forestry Bureau of Zhejiang, Anji 313300, China;Research Institute of Subtropical Forestry, Chinese Academy of Forestry, Fuyang 311400, China |
| Abstract: | The nutrient input coming from soil erosion has a significant impact on water body eutrophication of the Taihu Lake Basin. There are a large number of studies discussing the soil erosion features of regional ecosystems based on field investigations, but few studies explored the risks of soil erosion and nutrient loss from forestland at the ecological landscape level. Anji County is located in the headwater streams of the Taihu Lake, whose plentiful forestlands are undergoing an unprecedented disturbance, su... |
| Keywords: | Forest land Soil erosion Nutrient loss Taihu Lake Basin Anji County |
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