地下水埋深
- 网络groundwater depth;depth of groundwater;Depth of groundwater level
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从数字地下水埋深模型获得的地下水埋深分布状况可知,地下水埋深大于10m的面积占统计面积的65%。
According to the distribution of groundwater depth , which is obtained by the present model , the area with groundwater depth greater than 10m accounts for 65 % of the total statistical areas .
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塔里木河下游数字地下水埋深模型的构建
Construction of digital groundwater depth model for lower Tarim River
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浅地下水埋深条件下土壤水盐动态BP网络模型研究
BP network model for soil water-salt movement with a shallow groundwater table
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优化GM(1,1)模型在预测地下水埋深中的应用
The Application of the Optimization GM ( 1,1 ) Model to Forecasting Groundwater Level
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利用GIS对GPS采样点数据进行空间插值分析,获取地下水埋深和矿化度状况。
The situation of ground water depth and mineralization was got by spatial interpolation analysis based on the data of sampling points .
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浅地下水埋深区潜水对SPAC系统作用初步研究
Preliminary studies on groundwater effects on SPAC system in shallow groundwater field
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当地下水埋深小于2m时,地表蒸发强烈,土壤积盐迅速。
When bury of groundwater is smaller than 2m , strong evaporation in surface led to rapid accumulation of salt in soil .
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前言:介绍了DRASTIC模型的七个评价因子:地下水埋深、含水层净补给量、含水层介质类型、土壤类型、地形坡度、包气带介质I的影响和含水层的导水系数。
The paper introduces seven factor of DRASTIC model : Depth of water table , Net recharge , Aquifer media , Soil media , Topography , Impact of Vadose Zone and Hydraulic Conductivity .
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相同灌水量和施肥条件下,地下水埋深2m处理对促进冬小麦各生理指标的增长最有利。
The treatment of water depth 2m of ground water depth is the best for the growth of winter wheat under the same irrigation amount and fertilizer amount condition .
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在时空变异分析方面:提出了参数时空变异分析方法,结合不同时段的空间变异比较分析,研究了降水量、ET0和地下水埋深的时空变异规律。
Parameter-spatial-temporal variability analysis is advanced , together with the comparative analysis of spatial heterogeneity among different periods , the author discussed the spatial-temporal variation of the precipitation , ET_0 and ground water depth in the irrigation , area .
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获得了各土柱0~40cm深度土壤电导率关于地下水埋深、地下水矿化度的统计模型。
In order to evaluate the effect of groundwater table and salinity on EC 0 , a statistical model was built .
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研究表明:奇台县绿洲地下水埋深已低于影响地表盐渍化的水位埋深临界值(5m),地下水矿化度低于3g/L,研究区整体处于有利于土壤盐渍化逆向演替的环境。
The results show that Qitai oasis has already in a circumstance which is valuable for soil-salinization reversal evolvement . Groundwater table is below 5 meters , the critical point which will affect the surface salt accumulation .
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研究表明,地下水埋深较小时,降雨入渗补给系数随着埋深的增加而增大,1m以下则逐渐减少,3m以下趋于稳定;
Analytic results indicate that the precipitation recharge coefficient becomes larger along with increasing of the water table depth while water table is shallower than 1 m and becomes smaller under 1 m and then tends to stabilize below 3 m.
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为了获得较高的产量,油菜生长期的地下水埋深宜控制在70~100cm。
In order to obtain a higher yield , it is suitable for buried depth of groundwater in rape growth stage to be controlled from 70 cm to 100 cm .
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当地下水埋深超过8m,地下2m处土壤含水率达到12%以下,大部分乔木林枯梢率达到90%以上,而灌木林枯梢率也达到50%以上。
When the depth of groundwater was deeper than 8m and soil water content was less than 12 % , the die-back rate of tree was morn than 90 % , and that of shrub was more than 50 % .
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用粉砂壤土土柱进行了为期一年的室内模拟试验,对不同地下水埋深及其矿化度作用条件下0~40cm深度土壤的盐分运动规律进行了深入研究。
Summary A one year indoor soil column simulation experiment was conducted to study salt dynamics in soil ( 0 ~ 40 cm layer ) of silt loam with different groundwater conditions .
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植被盖度减少始于草本植物盖度受损,与群落多样性受损的临界地下水位相同,发生在地下水埋深大于4m;
The decrease of vegetation coverage was due to decline of herbaceous coverage . The threshold depth of groundwater level for coverage degradation was 4 m. This depth was the same as the depth of groundwater for degradation of species diversity .
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地下水埋深为3.0m时100~200cm土层土壤盐分下移至205~255cm土层段,属深部脱盐。
The salinity of 100 ~ 200cm soil layer migrates down to 205 ~ 255cm when depth to groundwater is 3m which belongs to deep desalt .
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地下水埋深155cm、试验设定条件下,各土柱0~40cm深度土壤积盐强度都较小,并且相互之间差异不明显。
When the groundwater table is at 155 cm , salt accumulation of the soil columns in 0 ~ 40 cm layer is much less intensive and varies slightly in intensity regardless of the difference in groundwater salinity .
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在地下水埋深小于1.8m、降雨大于8mm时对地下水产生不同程度影响。
The underground biomass of plants obviously tended to decline with increasing depth of groundwater level ; As depth of groundwater below 1.8 m and precipitation above 8 mm , which have a different impact on the groundwater level .
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结果表明:由于土表盐壳形成后对水分蒸发的抑制,不同大气蒸发能力条件下地下水埋深为50cm时,随蒸发历时的延长,潜水蒸发由稳定变为非稳定状态。
The results show that the steady state phreatic evaporation changes into non-steady state with the increase of evaporation time at 50 cm depth of groundwater table owing to the effect of salt crust on the water movement .
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在年均降水量为600mm左右的条件下,土层厚度大于6m或地下水埋深大于6m的中龄人工林下,一般都有土壤干层发育。
In the condition that annual precipitation is about 600 mm , the dried layer of soil generally develops below artificial forest of middle years old that the thickness of soil layer is beyond 6 meters or the depth that groundwater is buried is beyond 6 meters .
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当地下水埋深较大时,0.6m以下土层含水率呈现明显的分层分布状态,表层受地下水补给的水量已大大减小,其降低的程度主要与各层次土壤的持水特性有关。
The soil moisture content below 0.6m soil layer shows the obvious section changes when the increase of depth of groundwater table , the water amount supplied by groundwater to soil surface decreases enormously , this mainly has relation with the water retention ability of the soil in different layer .
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基于地下水埋深效应的地温突变判据
Catastrophe criterion for ground temperature based on effect of groundwater table
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地下水埋深、蒸发量和退水量之间具有负相关性。
Drainage water volume connected negatively to groundwater table and evapotranspiration .
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并在不同的地下水埋深情况下,给出了计算公式。
Under different groundwater deepness , the calculation formula was given .
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地下水埋深、降雨量远程遥测系统应用软件开发
Development of the Remote Telemetering Software for Ground-water Depth and Precipitation
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不同地下水埋深时甜椒需水量及作物系数试验研究
Evapotranspiration and Crop Coefficient of Sweet Peppers under Different Groundwater Table
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荒漠区植被对地下水埋深响应研究进展
Recent advances in desert vegetation response to groundwater table changes
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农田排水条件下降雨补给与地下水埋深关系的试验研究
Experimental Study on Relationship Between Rainfall Recharge and Groundwater Level under Drainage