摘要
选取芜湖市2008—2017年降水量、水资源总量、地表水资源量和水质等数据,采用线性回归、秩相关系数及通径分析法,开展近十年芜湖市水资源变化趋势和影响因素研究。结果表明:(1)受季风气候影响,夏季降水对年降水增加贡献最大,研究时段内仅冬季降水量呈下降趋势;(2)近十年芜湖市水资源量呈现增加趋势,地下水资源增加趋势明显,其秩相关系数为0.867,水资源总量、地表水资源量增加趋势次之;(3)通径分析结果表明,影响水资源动态分布的社会经济因素主要为耕地面积和城镇化水平,城镇化水平对地下水资源的影响最大,耕地面积对地表水资源的直接效应最大。自然因素中,降水对水资源总量、地表水资源量和地下水资源量的直接影响较大,分别为0.858、0.847和0.786;(4)芜湖市河湖水环境总体良好。河流水质略有下降,开始出现Ⅳ类水;湖泊水质比河流水质略差,部分湖泊出现Ⅴ类和劣Ⅴ类水,说明芜湖地表水质尤其湖泊水质仍是当前区域水质管理的重点。研究结果可为芜湖市水量和水质管理提供依据。
To explore the characteristics of water resources variation in Wuhu,the data of total water resources,precipitation,surface water resources and water quality from 2008 to 2017 were collected.The linear regression,spearman rank relational coefficient and path analysis were applied to explore water resources variation trend and influencing factors of water resources in Wuhu in recent 10 years.The results showed that:⑴Due to the prevailing of monsoon climate,summer precipitation contributed the most to the increase of annual precipitation.However,winter precipitation declined during the study period.⑵The quantity of water resources in Wuhu showed an increasing trend in the past 10 years.The quantity of groundwater resources significantly increased with a rank correlation coefficient of 0.867.The increment of total water resources and surface water resources was not so significant.⑶The results of path analysis show that the main social and economic factors affecting the dynamic distribution of water resources are cultivated land area and urbanization level.The urbanization level has the greatest impact on groundwater resources.The arable land area has the greatest direct effect on surface water resources.Among the natural factors,precipitation has a greater direct impact on the total water resources,surface water resources and groundwater resources,which are 0.858,0.847 and 0.786.⑷The water environment in Wuhu was generally good.The river water quality slightly decreased,and the percentage of the class IV water began to appear.The lake water quality was slightly worse than that of river,and some lakes appeared class V and inferior class V water.It is indicated that the surface water quality of Wuhu,especially the lake water quality,is still the focus of current regional water quality management.The results can provide fundamental basis for water quantity and quality management in Wuhu City.
作者
孙奕琳
苗雨青
崔乾
张汝南
王欣畅
SUN Yi-lin;MIAO Yu-qing;CUI Qian;ZHANG Ru-nan;WANG Xin-chang(College of Geography and Tourism,Anhui Normal University,Wuhu 241003,China;Anhui Province Key Laboratory of Earth Surface Processes and Regional Response in the Yangtze-Huaihe River Basin,Wuhu 241003,China)
出处
《安徽师范大学学报（自然科学版）》
CAS
2020年第6期558-564,共7页
Journal of Anhui Normal University(Natural Science)
基金
国家自然科学基金项目(41601083)
安徽省自然科学基金项目(1608085QD83)
国家级大学生创新创业训练项目(201910370015).
关键词
水资源
秩相关系数
水质
芜湖市
water resources
wank correlation coefficient
water quality
Wuhu City
