|
|||||
|
|
| 中国干旱内陆流域水体 N、P负荷特征与动态变化——以黑河流域为例 | |
| 引用本文： | 王根绪,程国栋,钱鞠,常娟.中国干旱内陆流域水体 N、P负荷特征与动态变化——以黑河流域为例[J].地球科学进展,2003,18(3):338-344. |
| 作者姓名： | 王根绪 程国栋 钱鞠 常娟 |
| 作者单位： | 1. 兰州大学西部环境教育部重点实验室,甘肃,兰州,730000;中国科学院寒区旱区环境与工程研究所冻土工程国家重点实验室,甘肃,兰州,730000 2. 中国科学院寒区旱区环境与工程研究所冻土工程国家重点实验室,甘肃,兰州,730000 3. 兰州大学西部环境教育部重点实验室,甘肃,兰州,730000 |
| 基金项目： | 国家自然科学基金，中国科学院知识创新工程项目，40171002，KZCX01-09，， |
| 摘 要： | 以黑河流域中游地区为研究区域，通过11年在不同河流断面的长期监测和区域内各类水体如地下水、泉水、水库和河流的空间选点取样分析，研究了干旱内陆流域水体 N、P等植物营养元素的负荷与时空分布及动态变化特征。浅层地下水与河水中NO3-N含量普遍较高，含量超过 1．1 m g／L，大部分平原水库水中NH4-N含量超过 0．3 m g／L；河水与浅层地下水TP、NH4-N与NO3-N含量均呈现沿流域从出山口至下游的显著递增变化，同时还具有明显的随时间递增趋势，其中NH4-N含量在河流出山口及下游断面平均年增加幅度分别为 0．11 m g／L和 0．114 m g／L；流域水体 N、P含量的季节变化明显，黑河流域春季及春夏之交的枯水期大部分河段NH4-N、NO3-N和TP等要素含量为全年最高并出现水质超标污染。控制干旱内陆流域水域尤其是枯水期的 N、P污染，应成为干旱内陆流域水资源保护问题中值得关注的关键内容。 |
| 关 键 词： | 干旱区 内陆流域 硝酸盐氮 总磷 分布特征 动态变化 黑河流域 |
| 文章编号： | 1001-8166(2003)03-0338-07 |
| 收稿时间： | 2002-11-19 |
| 修稿时间： | 2002年11月19 |
N AND P LOADING FEATURES AND DYNAMICAL CHANGES IN ARID INLAND WATER BODIES OF NORTHWEST CHINA |
|
| WANG Gen-xu ,CHENG Guo-dong ,QIAN Ju ,CHANG Juan.N AND P LOADING FEATURES AND DYNAMICAL CHANGES IN ARID INLAND WATER BODIES OF NORTHWEST CHINA[J].Advance in Earth Sciences,2003,18(3):338-344. | |
| Authors: | WANG Gen-xu CHENG Guo-dong QIAN Ju CHANG Juan |
| Institution: | 1.Education Ministry Key Laboratory of West Chinese Environment, Lanzhou University, Lanzhou 730000,China;2. State Key Laboratory of Frozen Soil Engineering, Cold and Arid Regions Environmental and Engineering Research Institute, Chinese Academy of Sciences, Lanzhou 730000,China |
| Abstract: | This study was undertaken to investigate the loadi ng features, temporal-spatial distribution and dynamical changes of plant nutrient element s N and P in arid inland water bodies including ground water, spring water, rese rvoir and river in the midstream area of the Heihe river basin through river section monitoring and sample analyses at selected sites over the past 11 years. NO 3-N con tents in shallow ground water and river water were commonly higher than 1.1 mg/L; NH 4-N contents in most of plain reservoirs exceeded 0.3 mg/L; TP, NH 4-N and NO 3-N contents showed a significant increase tendency from the mountain valle y mouth to the downstream area of the river basin. Further more, they also tended to increase significantly with time, of which NH 4-N contents in the river water at t he mountain valley mouth and the lower reach on an average annually increased 0.11 mg/L and 0.114 mg/L respectively. N and P contents in the basin's water bodi es also exhibited obvious seasonal change, during the low water period from late spring to early summer, TP, NH 4-N and NO 3-N contents in a large part of t he river section reached a peak values of a year or even exceeded polluted water quality level. The control of N and P pollution especially in water period should be viewed as a key content for the protection of water resources in the arid inland river basin. |
| Keywords: | Arid zone Inland river basin Nitrate nitrogen Total phosphorus Distribution feature Dynamical change |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ | |
| 点击此处可从《地球科学进展》浏览原始摘要信息 | |
| 点击此处可从《地球科学进展》下载免费的PDF全文 | |