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川东平行岭谷区单斜山构造坡水资源保护

2017-09-21张凤秋陈秋艳陈乐高林林彭昱松罗培

安徽农学通报 2017年17期

张凤秋+陈秋艳+陈乐+高林林+彭昱松+罗培

摘 要:该文以四川达州青宁乡为研究区,探讨了川东平行岭谷区典型单斜山地貌构造面的水资源问题。结果表明,该类型地貌区在地质地貌、气象气候、种植结构、水利设施状况、水污染及水浪费问题等因素的综合影响下,水土流失以及水域污染严重,可用水资源极为匮乏。为改善此现状,建议:适当增加并合理布局蓄水、给水实施,充分利用并保护好地下水资源;调整土地利用方式并改进灌溉技术;加强污染防治;优化政策措施。

关键词:川东平行岭谷;单斜山构造坡;水资源保护

中图分类号 TV213.4 文献标识码 A 文章编号 1007-7731(2017)17-0136-04

Abstract:Taking Sichuan Dazhou Qingning township as a study area,discussed the water resources protection about the typical monoclinic mountain surface of Parallel ridge Valley Area of East Sichuan. The study shows that the soil erosion and water pollution are serious and the available water are extremely scarce due to the combined effects of geological landform,meteorological climate,planting structure,status of water conservancy facilities and water pollution and waste,etc. In order to improve the severe situation,it's better to do with the following:appropriately increasing and reasonably layouting the facilities of water impoundment and supplyment;making full use of and protect groundwater resources,changing land use patterns and improving irrigation techniques;strengthening pollution prevention and control;optimizing policy measures.

Key words:Paralleled ridge-valley of east sichuan;Structural slope of monoclinal mountain;Water resources protection

川东平行岭谷位于四川盆地东部,西起华蓥山,东到方斗山,由九大平行山脉和槽谷组成,伴随褶皱的隆起和外力的剥蚀,山脉两侧形成一系列与主山脉平行排列的大范围的单斜山构造地貌,地貌特点是构造坡较缓,剥蚀坡较陡,研究区主要的居民点和农业布局主要集中在构造坡上。本地区总降水量较充足,但水土流失严重,且受春旱和伏旱天气影响大,因此生活用水和灌溉用水严重缺乏。本文以华蓥山北端西坡的青宁乡为例,在对典型單斜山构造面水资源现状及问题进行调查的基础上,拟对单斜山地区水资源缺乏的原因进行分析,并对水资源的利用和保护提出建议。

1 区域概况

青宁乡位于达州市通川区西北部,幅员面积38.6km2[1]。地质构造形迹为华蓥山复式背斜北西侧的单斜构造[2],地貌以单斜山为典型,西低东高,坡度15~45°,地面高程 320~900m(图1)。……

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