摘要
低丘红壤区潜水时空变化主要与降水及补、蓄潜水的空间因子相关,其特征是:潜水位随时间变化基本上与降水负相关,只是其相关性随着井位高程的下降而降低。潜水位空间变化取决于补给潜水源的空间因子差异,主要是影响观测井补给水源远近、高差和侧向流动能力、速度的井位海拔、坡度、质地、距河渠和林带的远近、河塘渠高程与相对高程等,均达显著相关;次为周围环境因子中,影响其蓄水能力及空间容量的覆被类型、覆被率与土层厚度。这表明低丘红壤区潜水的开发关键是根据其时空变化,选择合适的井位打井。
The temporal and spatial change of underground water table in low hilly red soil area was mainly related to precipitation and space factors of replenishing and retaining water. Its characteristics were that basioally negative relationship was found between the underground water table and the precipitation with time. Just its relativity descended along with falling of altitude of well. The space variety of the under ground water table is decided by the difference of space factor of replenishing and retaining groundwater Source. The mainfactor is far and near of distance, altitude and lateral flowing ability,velocity etc influencing replenishing unconfined groundwater of observed wells. That is the elevation, slope, texture, far and near apart from river and canal and forest belt, elevation of river canal pond, relative elevation. All reach to significant relations secondly, that is the cover type, cover-degree and thickness of soil layer affecting to retaining water ability and the space capacity in the surroundings environment. Above mentioned explain that the key to develop the unconfined groundwater is to choose the fit location of well according to its temporal and spatial variety in low hilly red soil area.
出处
《水资源与水工程学报》
2009年第1期1-4,共4页
Journal of Water Resources and Water Engineering
基金
863项目"现代节水农业技术体系及新产品研究与开发"重大科技专项中"南方季节性缺水灌区节水农业综合技术体系集成与示范"课题任务的一部分(2002AA2Z4331)
关键词
潜水
时空变化特征
低丘红壤区
undergrourd water
temporal and spatial change
low hilly red soil area
