新闻 > 国内
404 Not Found

404 Not Found

Sorry for the inconvenience.
Please report this message and include the following information to us.
Thank you very much!

URL: http://3g.china.com:8080/act/news/945/20170720/30991499.html
Server: cms-8-251
Date: 2024/12/28 11:40:38

Powered by China
China

水位回升漏斗变小 专家认为北京地下水只是“喘口气”

2017-07-20 20:23:57   新华网

新华社北京7月20日电(记者李斌、关桂峰)北京地下水位回升,漏斗区面积缩小。这是记者近日从北京市水务局获悉的消息。

数据显示,6月末,北京平原区地下水埋藏深度平均为26.40米,与去年同期相比,地下水位回升0.34米,地下水储量增加1.7亿立方米;2016年末,北京地下水降落漏斗面积为958平方公里,比2015年减少98平方公里,漏斗主要分布在朝阳区黄港、长店至顺义区米个庄、赵全营一带。

人类逐水而居,城市因水而兴。拥有3000多年建城史、800多年建都史的北京,历史上地下水极为丰富,曾经泉源遍地、河流纵横。但随着城市发展和人口急增,北京地下水位因超采、气候等因素呈现加速下降趋势:从1980年的平均埋深7.24米下降到2015年的25.75米。

2016年至今,北京地下水位连续2年回升:去年末平均埋深为25.23米,与2015年末相比回升0.52米。2016年北京地下水资源量21.05亿立方米,比2015年增加3.61亿立方米。“资源量和地下水位都回升,是人努力、天帮忙。”北京市水务局水资源处处长胡波说。

北京市水文总站总工程师黄振芳分析,北京地下水位过去2年总体回升,原因有四:一是降雨多了。1956年至1999年,北京多年平均降雨量为585毫米。2016年降水量达660毫米。二是南水北调中线工程通水,2015年和2016年累计回补地下水3000多万立方米。三是依靠节水设施年节水1亿立方米,其中农业用水持续负增长,从2015年的6.5亿立方米降至去年的6.1亿立方米。四是地下水开采量减少,2015年开采18.2亿立方米,2016年为17.5亿立方米。

“地下水位上升,只是喘口气。”黄振芳说,应清醒看到,地下水“欠账”仍很大。和上世纪80年代初相比,北京地下水位还“欠”19.95米,地下水储量还“欠”102.1亿立方米。

北京水利规划设计研究院副院长张彤说,地下水是“子孙水”,是城市的生命水源。尽管北京地下水位回升,但是亏空大,仍需要过“紧日子”,减少对地下水的开采;还要加强回补,进一步涵养水源。

责任编辑:李皓 CN002
404 Not Found

404 Not Found

Sorry for the inconvenience.
Please report this message and include the following information to us.
Thank you very much!

URL: http://3g.china.com:8080/act/news/945/20170720/30991499.html
Server: cms-8-251
Date: 2024/12/28 11:40:38

Powered by China
China
404 Not Found

404 Not Found

Sorry for the inconvenience.
Please report this message and include the following information to us.
Thank you very much!

URL: http://3g.china.com:8080/act/news/945/20170720/30991499.html
Server: cms-8-251
Date: 2024/12/28 11:40:38

Powered by China
China

相关阅读

404 Not Found

404 Not Found

Sorry for the inconvenience.
Please report this message and include the following information to us.
Thank you very much!

URL: http://3g.china.com:8080/act/news/945/20170720/30991499.html
Server: cms-8-251
Date: 2024/12/28 11:40:38

Powered by China
China
404 Not Found

404 Not Found

Sorry for the inconvenience.
Please report this message and include the following information to us.
Thank you very much!

URL: http://3g.china.com:8080/act/news/945/20170720/30991499.html
Server: cms-8-251
Date: 2024/12/28 11:40:38

Powered by China
China
404 Not Found

404 Not Found

Sorry for the inconvenience.
Please report this message and include the following information to us.
Thank you very much!

URL: http://3g.china.com:8080/act/news/945/20170720/30991499.html
Server: cms-8-251
Date: 2024/12/28 11:40:38

Powered by China
China
分享到:
0 0
404 Not Found

404 Not Found

Sorry for the inconvenience.
Please report this message and include the following information to us.
Thank you very much!

URL: http://3g.china.com:8080/act/news/945/20170720/30991499.html
Server: cms-8-251
Date: 2024/12/28 11:40:38

Powered by China
China
404 Not Found

404 Not Found

Sorry for the inconvenience.
Please report this message and include the following information to us.
Thank you very much!

URL: http://3g.china.com:8080/act/news/945/20170720/30991499.html
Server: cms-8-251
Date: 2024/12/28 11:40:38

Powered by China
China

美图推荐

404 Not Found

404 Not Found

Sorry for the inconvenience.
Please report this message and include the following information to us.
Thank you very much!

URL: http://3g.china.com:8080/act/news/945/20170720/30991499.html
Server: cms-8-251
Date: 2024/12/28 11:40:38

Powered by China
China
404 Not Found

404 Not Found

Sorry for the inconvenience.
Please report this message and include the following information to us.
Thank you very much!

URL: http://3g.china.com:8080/act/news/945/20170720/30991499.html
Server: cms-8-251
Date: 2024/12/28 11:40:38

Powered by China
China
404 Not Found

404 Not Found

Sorry for the inconvenience.
Please report this message and include the following information to us.
Thank you very much!

URL: http://3g.china.com:8080/act/news/945/20170720/30991499.html
Server: cms-8-251
Date: 2024/12/28 11:40:38

Powered by China
China
404 Not Found

404 Not Found

Sorry for the inconvenience.
Please report this message and include the following information to us.
Thank you very much!

URL: http://3g.china.com:8080/act/news/945/20170720/30991499.html
Server: cms-8-251
Date: 2024/12/28 11:40:38

Powered by China
China

为您推荐

加载更多>>
404 Not Found

404 Not Found

Sorry for the inconvenience.
Please report this message and include the following information to us.
Thank you very much!

URL: http://3g.china.com:8080/act/news/945/20170720/30991499.html
Server: cms-8-251
Date: 2024/12/28 11:40:38

Powered by China
China
404 Not Found

404 Not Found

Sorry for the inconvenience.
Please report this message and include the following information to us.
Thank you very much!

URL: http://3g.china.com:8080/act/news/945/20170720/30991499.html
Server: cms-8-251
Date: 2024/12/28 11:40:38

Powered by China
China
404 Not Found

404 Not Found

Sorry for the inconvenience.
Please report this message and include the following information to us.
Thank you very much!

URL: http://3g.china.com:8080/act/news/945/20170720/30991499.html
Server: cms-8-251
Date: 2024/12/28 11:40:38

Powered by China
China