河岸人工林缓冲带截留磷素能力及适宜宽度

发布时间：2018-01-05 00:15

本文关键词：河岸人工林缓冲带截留磷素能力及适宜宽度　出处：《东北林业大学学报》2016年12期 　论文类型：期刊论文

【摘要】：以中山杉林、杨树林、中山杉—杨树林3种太湖人工林缓冲带为研究对象,分析不同缓冲带宽度对富营养物质磷素的截留效果差异,为确定缓冲带适宜宽度提供科学依据。结果表明:3种类型人工林缓冲带径流水中的磷酸根质量浓度没有特定的空间趋势,总磷、可溶性总磷随宽度增加质量浓度减少,研究区人工林缓冲带对径流水中总磷的最大去除率可达78.2%。土壤总磷质量分数随宽度的变化呈极显著正相关(p0.01)。回归分析得出径流水中的总磷去除率达80%时,最佳人工林缓冲带为43.64 m宽的杨树林带。
[Abstract]:The buffer zones of three types of Taihu Lake plantation, Cunninghamia lanceolata forest, poplar forest and Cunninghamia sinensis forest, were used as the research objects, and the effects of different buffer zone widths on the interception of eutrophication phosphorus were analyzed. In order to determine the suitable width of buffer zone, the results showed that there was no specific spatial trend of phosphate concentration in runoff water of three types of plantation forest, total phosphorus. The content of soluble total phosphorus decreased with the increase of width. The maximum removal rate of total phosphorus in runoff water from the buffer zone of artificial forest in the study area can reach 78.2%. The variation of soil total phosphorus mass fraction with width is very significant positive correlation (p 0.01). Regression analysis showed that the removal rate of total phosphorus in runoff water was 80%. The best buffer zone is 43.64 m wide poplar forest zone.
【作者单位】：江苏省南方现代林业协同创新中心(南京林业大学);
【基金】：国家林业局“948”项目(2013-4-63) 江苏省生物学优势学科建设项目资助
【分类号】：X524;X173
【正文快照】： 1)国家林业局“948”项目(2013-4-63)、江苏省生物学优势学科建设项目资助。@163.com。通信作者:吴永波,江苏省南方现代林业协同创新中心(南京林业大学),副教授。E-mail:yongbowu0920@163.com。湖泊富营养化的治理成为当前一个热点问题。农业面源污染是造成湖泊富营养化的主要

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