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中国农学通报 ›› 2021, Vol. 37 ›› Issue (23): 94-100.doi: 10.11924/j.issn.1000-6850.casb2020-0812

所属专题: 资源与环境

• 资源·环境·生态·土壤·气象 • 上一篇    下一篇

1990—2016年东平湖水位变化及其对水质的影响

李景璇1(), 陈影影1,2(), 韩非1, 陈诗越1   

  1. 1江苏师范大学地理测绘与城乡规划学院,江苏徐州 221116
    2中国科学院地球环境研究所黄土与第四纪地质国家重点实验室,西安 710061
  • 收稿日期:2020-12-20 修回日期:2021-03-02 出版日期:2021-08-15 发布日期:2021-08-26
  • 通讯作者: 陈影影
  • 作者简介:李景璇,女,1997年出生,江苏盐城人,硕士研究生,研究方向:湖泊沉积与环境演变。通信地址:221116 江苏省徐州市铜山区上海路101号 江苏师范大学泉山校区,E-mail: 1084290334@qq.com
  • 基金资助:
    国家自然科学基金项目“东平湖沉积物物源示踪及黄河洪水事件判识”(41701101);“历史时期黄河下游湖泊消亡过程与机制及沉积碳埋藏量估算”(41871073);黄土与第四纪地质国家重点实验室开放基金项目“东平湖沉积物中的黄河洪水事件判识”(SKLLQG1902);江苏师范大学研究生科研与实践创新计划项目“东平湖沉积物中的黄河洪水事件判识”(2020XKT046);江苏省研究生科研与实践创新计划项目“东平湖沉积物源演变的地球化学记录研究”(KYCX20_2275)

Water Level Change of Dongping Lake and Its Impact on Water Quality from 1990 to 2016

Li Jingxuan1(), Chen Yingying1,2(), Han Fei1, Chen Shiyue1   

  1. 1School of Geography, Geomatics & Planning, Jiangsu Normal University, Xuzhou Jiangsu 221116
    2State Key Laboratory of Loess and Quaternary Geology, Institute of Earth Environment, Chinese Academy of Sciences, Xi’an 710061
  • Received:2020-12-20 Revised:2021-03-02 Online:2021-08-15 Published:2021-08-26
  • Contact: Chen Yingying

摘要:

根据1990—2016年东平湖主要水文站的实测水文数据,采用Spearman秩相关系数法,分析了东平湖水位以及主要水质指标的年际变化特征,阐述了东平湖水位与水质的相关性,并探讨了南水北调东线工程实施后长期的高位蓄水状态下东平湖湖泊水质的可能变化情况。结果表明:1990—2016年东平湖年平均水位呈波动上升趋势;湖水位变化与TP、高锰酸盐指数浓度呈显著负相关,相关系数分别为 -0.685和-0.550;与COD浓度呈负相关,相关系数为-0.389,相关性较弱;TN浓度主要受大汶河入湖污染量的控制;南水北调东线工程在一定程度上改善了东平湖的水质,但并未根治其水环境问题。建议通过合理调控东平湖水位高度、降低湖区人类活动强度等措施来管理湖泊水质,以期满足南水北调水质要求、实现东平湖乃至黄河下游湖泊生态系统的可持续发展。

关键词: 水质, 水位, 水环境, Spearman秩相关系数法, 南水北调东线工程, 东平湖

Abstract:

Based on the measured hydrological data of water level and water quality of Dongping Lake during 1990—2016 from hydrological stations, Spearman rank correlation coefficient was used to analyze the annual variation characteristics of the water level and the main indexes of water quality, and the correlations between the water level and the water quality were discussed. The potential water quality changes of Dongping Lake after the implementation of the Eastern Route of the South-to-North Water Diversion Project were explored as well. The results showed that: the annual water level of Dongping Lake presented a fluctuating upward trend from 1990 to 2016. The water level had a significantly negative correlation with TP and CODMn, with the correlation coefficient of -0.685 and -0.550, respectively; the water level was negatively correlated with the COD, with a weak correlation coefficient of -0.389; TN was mainly controlled by the pollution from Dawen River. To a certain extent, the Eastern Route of the South-to-North Water Diversion Project has improved the water quality of Dongping Lake, but the water environment problem has not been solved. To meet the water quality requirements of the South-to-North Water Diversion Project and support the sustainable development of Dongping Lake ecosystem and even the lower reaches of the Yellow River, it is suggested that the water quality of Dongping Lake should be managed by adjusting the water level and reducing the intensity of human activities.

Key words: water quality, water level, water environment, Spearman rank correlation coefficient, the Eastern Route of the South-to-North Water Diversion Project, Dongping Lake

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