|
|
|
| Dynamic evolutionary tendency of groundwater in irrigation district in changing environment and its driving factors |
| Du Wei1, Wei Xiaomei1, Li Ping1, Li Peng1, Han Yezhen2 |
| 1.College of Water Resources and Architectural Engineering, Northwest A&F University, Yangling, Shaanxi 712100, China; 2.Water Conservancy Construction Survey and Design Institute of Yantai City, Yantai, Shandong 264001, China |
|
|
|
|
Abstract The tendency of variation in environmental factors, namely precipitation, evaporation, amount of surface water irrigation and groundwater mining amount during 30 years(1981—2010)in Baojixia Irrigation District was analyzed by using three statistic methods and starting with the relationship between groundwater system and external environment. The results showed that precipitation declines but not significantly, its average decline slope is 2.900 mm/a; evaporation rises in increasingly fluctuation manner, its average increase slope is 3.270 mm/a, suggesting precipitation and evaporation have an opposite variation tendency. Amount of surface water irrigation shows a significant decrease, and groundwater mining amount decreases but not obviously. The temporal evolutionary tendency and spatial distribution features of groundwater were explored by means of the GIS technology and geostatistical methods too. It was presented that the groundwater level declines obviously from 1995 to 2005 in the north-west area in the irrigation district, eventually it has decreased about 7-8 m within 10 years; even though the groundwater level also decreases in the central and south-east area in the district, the declination is less than 1m. Fortunately, after 2005, the groundwater levels exhibit a less decline tendency only in Wugong which is located in the north bank of Weihe river, in the south of Xingping, and in the central south of Xianyang, respectively. Finally, the main factors for deriving change in groundwater level in the irrigation district were identified by using grey relational analysis, showing that the grey relational degree for each environmental factor is all above 0.5. Clearly, surface water irrigation and groundwater mining are the main factors of human activity related that derive change in the groundwater level in both highland and lowland areas in the irrigation district.
|
|
Received: 14 June 2013
|
|
|
|
| [1]张文化.变化环境对石羊河流域地下水动态的影响及其生态环境效应研究[D].杨凌:西北农林科技大学水利与建筑工程学院,2009.[2]Klove B, Ala-Aho P, Bertrand G, et al. Climate change impacts on groundwater and dependent ecosystems[J/OL]. Journal of Hydrology, 2013.[2013-06-14].http://dx.doi.org/10.1016/j.jhydrol.2013.06.037.[3]刘春蓁,刘志雨,谢正辉.地下水对气候变化的敏感性研究进展[J].水文,2007,27(2):1-6. Liu Chunzhen, Liu Zhiyu, Xie Zhenghui. Recent advances in research on sensitivity of groundwater to climate changes[J]. Journal of China Hydrology, 2007,27(2):1-6.(in Chinese)[4]贾瑞亮,周金龙,李巧.我国气候变化对地下水资源影响研究的主要进展[J].地下水,2012,34(1):1-4. Jia Ruiliang,Zhou Jinlong,Li Qiao. Main progress of effect research of Chinese climate changes on groundwater resources[J]. Ground water, 2012,34(1):1-4.(in Chinese)[5]张文化,魏晓妹,李彦刚.气候变化与人类活动对石羊河流域地下水动态变化的影响[J].水土保持研究,2009,16(1):183-187. Zhang Wenhua, Wei Xiaomei, Li Yangang. Groundwater dynamic evolution under climatic change and human activites in Shiyang river basin[J]. Research of Soil and Water Conservation, 2009,16(1):183-187.(in Chinese)[6]张冠儒,魏晓妹.基于变化环境的地下水动态敏感性分析方法研究[J].西北农林科技大学学报:自然科学版,2011,39(2):223-228. Zhang Guanru, Wei Xiaomei. Methods study on sensitivity analysis of groundwater dynamics based on the changing environment[J]. Journal of Northwest A&F University: Nat Sci Ed, 2011,39(2):223-228.(in Chinese)[7]陈皓锐,高占义,王少丽,等. 基于Modflow的潜水位对气候变化和人类活动改变的响应[J].水利学报,2012,43(3):344-353,362. Chen Haorui, Gao Zhanyi, Wang Shaoli, et al. Mode-ling on impacts of climate change and human activities variability on the shallow groundwater level using Modflow[J]. Journal of Hydraulic Engineering, 2012,43(3):344-353,362.(in Chinese)[8]蔡明科,魏晓妹,粟晓玲.宝鸡峡灌区耗水量变化规律及影响因素分析研究[J].水土保持研究,2007,14(6):260-263. Cai Mingke, Wei Xiaomei, Su Xiaoling. Study on water consumption change rule and influence factor in Guanzhong irrigation Area[J]. Research of Soil and Water Conservation,2007,14(6): 260-263.(in Chinese)[9]许涓铭,邵景力.地下水系统与管理问题[J].工程勘察,1986(5):31-36. Xu Juanming, Shao Jingli. Groundwater system and management issues[J]. Geotechnical Investigation and Surveying, 1986(5): 31-36.(in Chinese)[10]张光辉,费宇红,刘克岩.海河平原地下水演变与对策[M].北京:科学出版社,2004.[11]韩业珍. 基于变化环境的灌区地下水动态时空变异规律研究[D]. 杨凌:西北农林科技大学水利与建筑工程学院,2010.[12]张济世,刘立昱,程中山,等.统计水文学[M]. 郑州:黄河水利出版社, 2006.[13]Kottegoda N T.Stochastic Water Resource Technology[M].Hongkong: The Macmillan Press LTD,1980.[14]石伟.ArcGIS地理信息系统详解[M].北京:科学出版社, 2009.[15]Chesnaux R, Lambert M, Walter J, et al. Building a geodatabase for mapping hydrogeological features and 3D modeling of groundwater systems: Application to the Saguenay—Lac-St.-Jean region, Canada[J]. Computers and Geosciences, 2011,37(11):1870-1882.[16]邓聚龙.灰理论基础[M].武汉:华中理工大学出版社,2002.[17]Xu Jianhua, Chen Yaning, Li Weihong. Grey modelling the groundwater level dynamic in the lower reaches of Tarim River affected by water delivery from upper reaches: A demonstration from Yingsu section[C]//Proceedings of 2008 IEEE International Conference on Fuzzy Systems, FUZZ 2008, 2008:43-48. |
|
|
|
