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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...
Grassland monitoring of meadows in the region around Banská Bystrica
grassland monitoring flora Kremnické vrchy Mountains Starohorské vrchy Mountains vegetation
2014/3/10
Meadow grassland communities were monitored in situ in the region around the town of Bansk᠂ystrica (Central Slovakia) over the 2008 growing season. The botanical compositions were determined at ...
Sediment Yields of Basins in the Western Black Sea Region of Turkey
Soil loss Sediment yield Universal soil loss equation USLE MUSLE
2009/10/10
Soil loss and sediment yield are estimated for the basins of the Western Black Sea region of Turkey with di erent prediction models. The universal soil loss equation (USLE) is the rst model applied i...
基于小波变换的大米直链淀粉波长选择方法（Region Selecting Methods of Near Infrared Wavelength Based on Wavelet Transform）
直链淀粉 近红外光谱 小波变换 波长选择
2010/2/26
提出了一种基于小波变换的近红外光谱波长选择方法，小波分解低频系数是原光谱的离散近似，将最佳小波分解低频系数与原光谱数据进行关联，求出小波分解低频系数与原光谱数据的列相关系数R，取与原光谱数据相关系数较大的波长组合，作为最后参与建模的谱区。不仅考虑了浓度矩阵对波长选择的影响，且由于把小波分解结构中的高频系数全部滤除，避免了高频噪声的干扰，减小建模和预测运算时间，使最终建立的近红外光谱模型的预测精度提...
REGION MANAGER区域农业工程综合信息管理系统
区域 农业工程 信息管理系统
2008/12/18
Region Manager区域农业工程综合信息管理系统，通过信息库提供的各项参数，使农业生产决策过程中的水土流失分析，土地资源评价，土地规划，经济效益分析与投资的可行性，梯田、造林、谷坊、淤地坝、小型水库等工程设计通过微机自动实现，并自动生成各项专题图、施工图和结果数据库，其结果能以任意大小或比例输出，也可以制成多媒体光盘。极大地提高了规划决策、工程设计的效率和精度，节省了人力、物力和时间，为农...
Integrated projects of rural microregions: Experiences in the Central Bohemia region
Central Bohemia region Programme of Rural Revival analysis of microregions′ requests grant
2014/3/29
The article brings the empiric reflection and results-based analysis of the “Programme of Rural Revival” realization in the territory of the Central Bohemia Region (NUTS II/III) in the time of regiona...
The productive and economic parameters of the Gemer region agricultural soils
soil productivity potential soil parameters soil profitability
2014/3/28
On the basis of structure and qualitative parameters of agricultural soils, there are only 23.4% non profitable soils for the winter wheat growing in the total area of the Gemer Region. The same perce...
The country population trend in the selected region of the Czech Republic
district municipality population region trend
2014/3/28
There are 80% municipalities under one thousand inhabitants in the CzechRepublic. The population trend observed in the region ofSouth Bohemia has proved a long-term and gradated depopulation of such s...