黄河三角洲新生湿地磷分布特征及吸附解吸规律
其他题名Fractionation and adsorption-desorption characteristics of phosphorus in newly formed wetland soils of Yellow River Delta, China
孙军娜; 徐刚; 邵宏波
2014
发表期刊地球化学
ISSN0379-1726
卷号43期号:4页码:346-351
产权排序中国科学院烟台海岸带研究所
摘要采用改进的 Hedley 磷分级方法研究了黄河三角洲新生湿地由河向海过渡带表层土壤磷形态变化和分布特征,并通过等温吸附解吸实验阐明了沿程土壤对外源磷的持留能力和释放风险。结果表明,各样点无机磷占总磷93%以上,是磷的主要存在形态。土壤中有机磷含量较低,可能与较低的有机质含量有关。无机磷中稀盐酸磷是最主要存在形态,与各样点Ca/Al含量密切相关。有效磷含量在18.6~33.4 mg/kg之间,仅占总磷的3.2%~5.9%,可能会限制湿地植物的生长。覆有植被的土壤中有效磷含量显著高于河滩和海滩土壤,说明植被存在对有效磷的积累有一定促进作用。由吸附解吸实验可知,加入较低浓度(0.05~5 mg/L)的外源磷时,随着初始磷浓度的升高,土壤对磷的吸附量增加,吸附率为70%~99%,解吸率小于7%,这说明各样点土壤的除磷能力较强,且流失风险较低。
其他摘要A modified Hedley phosphorus (P) fractionation was used to study the P distribution seaward in the newly formed wetlands soils of Yellow River Delta. In addition, the adsorption-desorption experiments were performed to evaluate the ability of P retention and release in the sampled soils. The results showed that inorganic P remained the largest portion of total P (TP), accounting for more than 93% of TP. Due to the lower content of organic matter, the organic P was relatively low in these soils. Among the inorganic P, Dilute HCl-P was the dominated form, related with the content of Ca in soils. The content of available P was 18.6~33.4 mg/kg, accounting for only 3.2%~5.9% of TP in soils, which might restrict the growth of plants in the wetland system. Furthermore, it was found that the content of available P in the sampling site covered with plants was higher than that in the beach soils, indicating that the vegetation cover may enhance the accumulation of soil available P. According to the adsorption-desorption experiments, when the concentration of initial P addition was in the range of 0.05~5 mg/L, the P adsorption increased with the increase of initial P concentration. Moreover, the percentage of adsorption was 70%~99%while desorption rate was less than 7%. It could be concluded that in these soils, the capacity of P retention was high and the release potential was relatively low.
关键词 Hedley分级 吸附 解吸 黄河三角洲
作者部门海岸带生物学与生物资源利用所重点实验室
项目资助者国家自然科学基金项目,中国科学院烟台海岸带研究所“一三五”发展规划项目,中国科学院创新团队国际合作伙伴计划
收录类别CSCD
文章类型期刊论文
语种中文
CSCD记录号CSCD:5211477
引用统计
文献类型期刊论文
条目标识符http://ir.yic.ac.cn/handle/133337/8352
专题海岸带生物学与生物资源利用所重点实验室
推荐引用方式
GB/T 7714
孙军娜,徐刚,邵宏波. 黄河三角洲新生湿地磷分布特征及吸附解吸规律[J]. 地球化学,2014,43(4):346-351.
APA 孙军娜,徐刚,&邵宏波.(2014).黄河三角洲新生湿地磷分布特征及吸附解吸规律.地球化学,43(4),346-351.
MLA 孙军娜,et al."黄河三角洲新生湿地磷分布特征及吸附解吸规律".地球化学 43.4(2014):346-351.
条目包含的文件 下载所有文件
文件名称/大小 文献类型 版本类型 开放类型 使用许可
黄河三角洲新生湿地磷分布特征及吸附解吸规(429KB) 开放获取CC BY-NC-SA浏览 下载
个性服务
推荐该条目
保存到收藏夹
查看访问统计
导出为Endnote文件
谷歌学术
谷歌学术中相似的文章
[孙军娜]的文章
[徐刚]的文章
[邵宏波]的文章
百度学术
百度学术中相似的文章
[孙军娜]的文章
[徐刚]的文章
[邵宏波]的文章
必应学术
必应学术中相似的文章
[孙军娜]的文章
[徐刚]的文章
[邵宏波]的文章
相关权益政策
暂无数据
收藏/分享
文件名: 黄河三角洲新生湿地磷分布特征及吸附解吸规律.pdf
格式: Adobe PDF
所有评论 (0)
暂无评论
 

除非特别说明,本系统中所有内容都受版权保护,并保留所有权利。