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| 物理改良对湖泊沉积物和间隙水特征的影响 | |
| 引用本文： | 古小治,王强,张雷,申秋实,王兆德,范成新.物理改良对湖泊沉积物和间隙水特征的影响[J].中国环境科学,2010,30(2):256-262. |
| 作者姓名： | 古小治 王强 张雷 申秋实 王兆德 范成新 |
| 作者单位： | 1. 中国科学院南京地理与湖泊研究所,湖泊与环境国家重点实验事,江苏,南京,210008;中国科学院研究生院,北京,100049 2. 山东工艺美术学院建筑与景观设计系,山东,济南,250300 3. 中国科学院南京地理与湖泊研究所,湖泊与环境国家重点实验事,江苏,南京,210008 |
| 基金项目： | "十一五"国家科技支撑计划项目，国家自然科学基金资助项目，江苏省太湖水污染治理科技专项 |
| 摘 要： | 采用物理改良措施覆沙和底质疏松,对南四湖湿地沉积物-水微界面氧化还原状况及间隙水营养盐垂向分布特征的影响进行了研究.结果表明,改良措施能够有效地改善沉积物的物理结构及氧气的垂向分布.在沉积物-水界面附近,覆沙和底质疏松均能显著提高界面处氧化层的厚度,覆沙效果最佳.随着剖面深度的增加,间隙水中NH4+和可溶性PO43-浓度呈指数关系增长,改良措施能有效降低间隙水中PO43-的含量,轻度底质疏松的效果最佳,差异显著(P<0.05).而界面以下NO3-和氧气浓度呈指数关系下降,在沉积物中10cm以下时营养盐接近一个常数,在4mm以下溶解氧接近0.对剖面沉积物不同形态的磷组分进行统计检验表明,改良措施能有效提高表层沉积物中NH4Cl-P 及BD-P(铁磷)的含量. |
| 关 键 词： | 南四湖 沉积物 间隙水 磷形态 |
| 收稿时间： | 2009-07-21; |
Influence of physical amelioration on the characteristic of sediments and pore waters in Lake Nansi Wetland |
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| GU Xiao-zhi,WANG Qiang,ZHANG Lei,SHEN Qiu-shi,WANG Zhao-de,FAN Cheng-xin.Influence of physical amelioration on the characteristic of sediments and pore waters in Lake Nansi Wetland[J].China Environmental Science,2010,30(2):256-262. | |
| Authors: | GU Xiao-zhi WANG Qiang ZHANG Lei SHEN Qiu-shi WANG Zhao-de FAN Cheng-xin |
| Institution: | GU Xiao-zhi1,2,WANG Qiang3,ZHANG Lei1,SHEN Qiu-shi1,WANG Zhao-de1,FAN Cheng-xin1(1.State Key Laboratory of Lake Science , Environment,Nanjing Institute of Geography , Limnology,Chinese Academy of Sciences,Nanjing 210008,China,2.Graduate University of Chinese Academy of Sciences,Beijing 100049,3.School of Architecture , L,scape Design,Sh,ong University of Art , Design,Jinan 250300,China) |
| Abstract: | Investigation was carried out to evaluate the impact of physical amelioration treatments(fine sand covered and sediment loosened) on the sediments and pore water in Lake Nansi wetland in China.Oxygen microprofiles near sediment-water interface and the vertical distribution of pore-water nutrients(PO43-,NH4+,NO3-and NO2-) in the uppermost sediment were determined.The treatments could effectively improve sediment physical structure(i.e.water content,porosity et al.) and oxygen depth-distribution.The oxic zone... |
| Keywords: | Lake Nansi sediment pore water phosphorus species |
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