长江中游网湖沉积物营养元素变化特征及其影响因素

doi:10.13249/j.cnki.sgs.2010.05.766

地理科学 ›› 2010, Vol. 30 ›› Issue (5): 766-771.doi: 10.13249/j.cnki.sgs.2010.05.766

长江中游网湖沉积物营养元素变化特征及其影响因素

史小丽^1,2,3, 秦伯强¹

1. 中国科学院南京地理与湖泊研究所, 江苏南京 210008;
2. 宁波大学学报编辑部, 浙江宁波 315211;
3. 中国科学院研究生院, 北京 100049

收稿日期:2010-01-25 修回日期:2010-04-02 出版日期:2010-09-20 发布日期:2010-09-20
通讯作者: 秦伯强,男,研究员,主要研究方向为水资源与水环境。E-mail: qinbq@niglas.ac.cn E-mail:qinbq@niglas.ac.cn
基金资助:
国家杰出青年科学基金(40825004)项目资助。

Nutrients Distribution Character and Their Influential Factors in Core Sediments from Wanghu Lake in Middle Reaches of Changjiang River

SHI Xiao-li^1,2,3, QIN Bo-qiang¹

1. Nanjing Institute of Geography and Limnology, Chinese Academy of Sciences, Nanjing, Jiangsu 210008;
2. Editorial Department of Journal Ningbo University, Ningbo, Zhejiang 315211;
3. Graduate University of the Chinese Academy of Sciences, Beijing 100049

Received:2010-01-25 Revised:2010-04-02 Online:2010-09-20 Published:2010-09-20

摘要/Abstract

摘要： 在放射性核素¹³⁷Cs和²¹⁰Pb精确计年的基础上,建立了长江中游网湖近代沉积物年代序列。通过对沉积物中TOC、TN、TP、孢粉、重金属元素、粒度等指标的测定,结合相关文献资料,分析了百年来网湖沉积物中营养元素的分布特征,物源变化以及主控因子。结果表明:百年来网湖沉积物中TN和TOC含量显著相关,呈不断上升趋势,存在2个明显的演化阶段,主控因子为流域人类活动强度,气候波动对其有影响,但影响不大。TP的变化与TN和TOC明显不同,波动较大,规律不明显,主要受人类活动强度以及径流侵蚀输移入湖物质变化两大因子控制。

Abstract: Sediment cores were collected in November 2007 from Wanghu Lake, a river connecting lake before 1960s, in the middle reaches of the Changjiang (Yangtze) River. Dating sequence of the core was established based on radioisotopes ¹³⁷Cs and ²¹⁰Pb. The samples of the core sediments were analyzed for total organic carbon (TOC), total nitrogen (TN), total phosphorus (TP), heavy metal, grain-size and pollens. The results show that two stages were recognized according to vertical variation of TOC and TN concentrations. Before 1950, both TOC and TN concentrations were low and stable, reflecting that the TOC and TN of sediment were mainly from the natural of soil nutrient cycling in surrounding. After 1950, the concentrations of TOC and TN were increasing, the maximum appeared in the surface of sediment. The vertical changes of TP was different from TN and TOC, and it was more complex relatively. Before 1920, TP concentrations were low and sable, and in the period 1920-1950, TP concentrations were lower which were probably resulted from the decline of economy and population of the Yangxin County caused by war, Schistosomiasis and frequent floods. From 1950 to 1970, with the hydraulic engineering constructions, the development of industry and agriculture, the concentrations of TP in sediment were notable increased. Since Fuchi floodgate had been finished in 1967, the lake water exchange from the Changjiang (Yangtze) River was blocked, fine soil and particle phosphorus decreased into Wanghu Lake from Changjiang River, and the concentrations of TP in the sediment was declined. The results from Principal Component Analysis show that the concentrations of TOC and TN in sediment were mainly controlled by human activities and the changes of catchment land use, and climate had little impacted on them; the concentrations of TP were drove by two factors of human activities, erosion and transportation of runoff in catchment and the Changjiang River.

中图分类号:

X143

史小丽, 秦伯强. 长江中游网湖沉积物营养元素变化特征及其影响因素[J]. 地理科学, 2010, 30(5): 766-771.

SHI Xiao-li, QIN Bo-qiang. Nutrients Distribution Character and Their Influential Factors in Core Sediments from Wanghu Lake in Middle Reaches of Changjiang River[J]. SCIENTIA GEOGRAPHICA SINICA, 2010, 30(5): 766-771.

参考文献

[1] 秦伯强,朱广伟.长江中下游地区湖泊水和沉积物中营养盐的赋存、循环及其交换特征[J].中国科学(D辑:地球科学),2005,35(增刊II):1~10.
[2] 何华春,丁海燕,张振克,等.淮河中下游洪泽湖湖泊沉积物粒度特征及其沉积环境意义[J].地理科学,2005,25(5):590~596.
[3] 谢远云,李长安,王秋良,等.江汉平原近3 000 年来古洪水事件的沉积记录[J].地理科学,2007,27(1):81~84.
[4] 桂峰,于革.洪湖流域传统农业条件下营养盐输移模拟研究[J].第四纪研究,2006,26(5):849~856.
[5] Liu Enfeng,Yang Xiangdong,Shen Ji,et al.Environmental response to climate and human impact during the last 400 years in Taibai Lake catchment, middle reach of Yangtze River,China[J].Science of the Total Environment,2007(385):196-207.
[6] 羊向东,沈吉,董旭辉,等.长江中下游浅水湖泊历史时期营养态演化及湖泊生态相应[J].中国科学(D辑:地球科学),2005,35(增刊II):45~54.
[7] 吴艳宏,王苏民.龙感湖沉积物中人类活动导致的营养盐累积通量估算[J].第四纪研究,2006(5):843~848.
[8] 薛滨,姚书春,王苏民,等.长江中下游不同类型湖泊沉积物营养盐蓄积变化过程及其原因分析[J].第四纪研究,2007,27(1):122~127.
[9] 王苏民,窦鸿身.中国湖泊志[M].北京:科学出版社,1998:200~201.
[10] Chaolu Yi,Huifang Liu,Neil L Rose,et al.Sediment sources and the flood record from Wanghu lake,in the middle reaches of the Yangtze River[J].Journal of Hydrology,2006,(329):568-576.
[11] 史小丽, 秦伯强.湖北网湖¹³⁷Cs、²¹⁰Pb计年与沉积速率研究[J].宁波大学学报(理工版),2008,21(3):418~422.
[12] 易朝路,吴显新,刘会平,等.长江中游湖泊沉积微结构特征与沉积环境[J].沉积学报,2002,20(2):293~302.
[13] 范成新,王春霞.长江中下游湖泊环境地球化学与富营养化[M].北京:科学出版社,2007.
[14] 张玉兰,贾丽.上海东部地区晚第四纪沉积的孢粉组合及古环境[J].地理科学,2006,26(2):186~191.
[15] S A G Leroy.Pollen analysis of core DS7-1SC(Dead Sea) showing intertwined effects of climatic change and human activities in the Late Holocene[J].Journal of Archaeological Science,2010,(37):45-56.
[16] 史小丽,秦伯强.长江中游网湖沉积物重金属元素变化特征分析[J].第四纪研究,2009,29(1):135~143.
[17] 贾铁飞,张卫国,俞立中,等.近800年来巢湖沉积物营养元素富集特点及其环境演变意义[J].地理科学,2009,29(6):893~895.
[18] 刘恩峰,沈吉,朱育新.西太湖沉积物污染的地球化学记录及对比研究[J].地理科学,2005,25(1):102~107.
[19] K E Juracek,A C Ziegler. Estimation of sediment sources using selected chemical tracers in the Perry lake basin, Kansas,USA[J].International Journal of Sediment Research,2009,(24):108-125.
[20] 段水旺,章申,陈喜保,等.长江下游氮、磷含量变化及其输送量的估计[J].环境科学,2000,21(1):53~56.
[21] 徐开钦,林诚二,牧秀明,等.长江干流主要营养盐含量的变化特征——1998~1999年日中合作调查结果分析[J].地理学报,2004,59(1):118~124.
[22] 董旭辉,羊向东,刘恩峰,等.冗余分析(RDA)在简化湖泊沉积指标体系中的应用[J].地理研究,2007,26(3):477~484.
[23] Robert E Hecky,Harvey A Bootsma,Murray L.Kingdon. Impact of Land Use on Sediment and Nutrient Yields to Lake Malawi/Nyasa (Africa)[J].Journal of great lakes research,2003,29(sup2):139-158.
[24] 肖霞云,蒋庆丰,刘兴起,等.新疆乌伦古湖全新世以来高分辨率的孢粉记录与环境变迁[J].微体古生物学报,2006,23(1):77~86.
[25] 姚树春,薛滨,王小林.人类活动影响下的固城湖环境变迁[J].湖泊科学,2008,20(1):88~92.
[26] 姚树春,李世杰,薛滨,等.南太湖沉积岩中金属和营养元素的垂向分布特征及其意义[J].生态环境,2005,14(2):178~181.
[27] 杨洪,易朝路,谢平,等.武汉东湖沉积物碳氮磷垂向分布研究[J].地球化学,2004,33(5):507~514.
[28] 熊汉锋,谭启华,王运华.梁子湖沉积物中氮磷分布特征研究[J].华中农业大学学报,2008,27(2):235~238.

长江中游网湖沉积物营养元素变化特征及其影响因素

Nutrients Distribution Character and Their Influential Factors in Core Sediments from Wanghu Lake in Middle Reaches of Changjiang River

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