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SLIGHT AND MODERATE SALINE AND SODIC SOILS CHARACTERIZATION IN IRRIGATED AGRICULTURAL LAND USING MULITSPECTRAL REMOTE SENSING
Salinity Sodicity Electrical conductivity Remote sensing
2015/9/8
Around the world, especially in semi-arid regions, millions of hectares of irrigated agricultural land are abandoned each year because
of the adverse effects of irrigation, mainly secondary salinity ...
Geophysical Investigation of the Fresh-Saline Water Interface in the Coastal Area of Abergwyngregyn
Fresh-Saline Water
2013/3/11
The importance of the study of saline/fresh water incursion cannot be over-emphasized. Borehole sampling has been extensively used, but it is intrusive, quite expensive and time consuming. Electrical ...
淡水与微咸水入渗特性对比分析（Infiltration Characteristic Contrast Analysis of Fresh Water and Saline Water）
微咸水 淡水 间歇入渗 连续入渗
2010/12/29
为了研究淡水与微咸水连续和间歇入渗特性的差异，采用矿化度1.33g/L的淡水与矿化度3g/L的微咸水，在黏质土壤条件下进行了一维积水连续入渗及间歇入渗试验。研究结果表明，采用微咸水入渗可以改变土壤的结构特性，从而增大土壤的入渗能力；利用一维代数入渗模型对试验资料进行处理，结果表明模型可以比较精确地描述微咸水入渗过程；入渗水为淡水时，间歇入渗减渗，而入渗水为微咸水时，间歇入渗增渗；间歇入渗的循环...
不同初始含水率条件下的微咸水入渗实验（Saline Water Infiltration with Different Initial Moisture Contents）
微咸水 初始含水率 累积入渗量 湿润锋
2010/12/29
针对矿化度均为3g/L的微咸水入渗时，土壤初始含水率对土壤入渗过程的影响，采用室内均匀土柱一维垂直入渗实验方法，分别对初始含水率为2.25%、8.18%、13.12%、16.40%的土柱入渗过程进行了研究。分析了不同土壤初始含水率对累积入渗量和湿润锋推进深度以及土柱剖面含水率的影响。采用Kostiakov模型对累积入渗量和时间的关系进行了拟合，结果表明累积入渗量与初始含水率呈负相关关系。采用幂函...
滩涂土壤电磁感应仪与方差四叉树法采样布局研究（Application of Electromagnetic Induction (EM38) and Variance Quad-tree (VQT) Method on Spatial Sampling Scheme in Coastal Saline Region）
电磁感应仪 方差四叉树 滩涂
2010/12/28
将电磁感应仪EM38和方差四叉树法VQT相结合，以EM38测量的土壤表观电导率作为土壤盐分的辅助变量，以表观电导率的空间分布为先验信息，利用VQT法对苏北滩涂围垦地土壤盐分的优化采样布局进行了设计、验证与精度评价。结果表明，VQT法设计的采样方案经Kriging插值形成的空间分布图与原始图件极其相似，但两者的样点数目相差近1/2。相同的样本数目，VQT法获取的空间分布图与原始图件的相似度高于网格采...
微咸水连续灌溉对冬小麦产量和土壤理化性质的影响（Effect of Saline Water Continuous Irrigation on Winter Wheat Yield and Soil Physicochemical Property）
微咸水 冬小麦 土壤含盐量 电导率
2010/12/28
为了合理开发和利用黄淮海平原浅层地下微咸水，2003~2005年在中科院河北南皮生态实验站连续以3g/L的微咸水对冬小麦进行田间灌溉试验，分析了微咸水灌溉对土壤含盐量、土壤溶液盐分含量、电导率以及冬小麦产量的长期影响，为建立华北地区冬小麦微咸水灌溉的合理灌溉制度和微咸水的合理利用提供理论依据。结果表明，连续利用3g/L的微咸水灌溉，会造成土壤表层盐分的累积，尤其在降水量偏少的年度会使作物受到盐...
微咸水入渗水量对土壤水盐运移特征的影响（Effect on Characteristics of Soil Water and Salt Movement about Saline Water Infiltration with Different Infiltration Amount）
微咸水 含水率 含盐量 脱盐效率
2010/12/28
通过室内3g/L微咸水的入渗试验，分析了不同微咸水入渗水量对土壤剖面含水率、含盐量、脱盐效率和阳离子分布的影响。结果表明，利用3g/L的微咸水进行垂直一维积水入渗，入渗水量较小时，基质势是水分运动的主要动力，入渗量继续增大时，重力势逐渐取代基质势成为水分运动的主要动力；采用3g/L的微咸水入渗，可以使上层土壤脱盐，但使湿润锋处的含盐量急剧增加且达到最大值；湿润锋处含盐量与入渗水量符合指数函数...
DETECTION OF SALINE AND NON-SALINE LAKES ON THE PANTANAL OF NHECOLÂNDIA (BRAZIL) USING OBJECT-BASED IMAGE ANALYSIS
Pantanal of Nhecolandia Object-based Image Analysis Lakes Delineation Rule-based Classification
2014/6/12
The Pantanal (Brazil) is one of the world’s largest tropical wetlands. A natural phenomenon that encourages more detailed scientific studies on this region is the genesis and behavior of innumerable s...
Phenanthrene partitioning in sediment–surfactant–fresh/saline water systems
Salinity Phenanthrene Surfactant Sorption Sediment remediation
2013/12/12
The objective of this study was to investigate the influence of salinity on the effectiveness of surfactantsin the remediation of sediments contaminated with phenanthrene (PHE). This is an example of ...
Heat Resistance of Acanthamoeba sp. Cysts in Green Mussel Broth and Phosphate-Buffered Saline
D-value Z-value protozoon cysts shellfish
2009/6/18
Cysts propagated by the agar block method with heat-killed Escherichia coli as nutrient overlay were inoculated into Perna viridis broth (PVB) and phosphate-buffered saline (PBS) prior to exposure to ...
Effects of Amount and Application Time of Saline Water on Fibre Quality Characteristics of Cotton
Cotton fibre characteristics water quality evapotranspiration soil salinity
2009/2/9
Compared with good quality water, the use of saline water increases the amount of water used for crop growth. An increased amount of saline water affects fibre quality. A field study was conducted to ...
An Effective Mobile Technology for the Treatment of Saline Sludge from Oil and Gas Exploration
Saline sludge salt zeolite washing demineralization desalination EC CEC ion-exchange NaCl MgCl CaCl
2009/1/20
The particle size distribution of the saline sludge samples indicated the presence of very fine sand and clay. The electrical conductivity of the sludge was 42.2 dS/m indicating very saline sludge and...
Abstract: Soil salinization is one of the major land degradation types and has greatly influenced sustainable agricultural development. Zonation of saline-alkali land is the precondition f...