搜索结果: 1-5 共查到“土壤地理学 GIS”相关记录5条 . 查询时间(0.158 秒)
Analysis of soil degradation in the Czech Republic: GIS approach
degradation GIS modelling soil
2015/3/2
In our work, we have evaluated the available data on the individual types of soil damage, which has been processed in the Czech Republic in recent decades. The individual types of degradation (water e...
Creating GIS on the pilot area of the Litoměřice district. From soil survey to international information systems
archive soil data soil survey (geo)statistical methods and pedotransfer rules soil GIS SOTER
2015/3/2
The procedure of processing and utilising the soil information entering the SOTER system is tested on the pilot area of the Litoměřice district. The reliability of the archive data is examined, t...
GIS-based assessment of land suitability for alfalfa cultivation: a case study in the dry continental steppes of northern China
land suitability GIS MCDA Fuzzy analysis AHP Medicago sativa dry continental steppes
2014/10/24
Alfalfa (Medicago sativa L.) is the most valuable perennial forage grass in northern China. We selected 12 ecological criteria and 4 socioeconomic criteria to calculate the suitability of land for alf...
结合GIS和统计学方法，利用21个站点气象数据和DEM（基于5个因子：高程、坡度、坡向、经度和纬度）在黑河干流山区构建一种多元非线性回归模型，用以模拟研究区降水量空间分布，并分析了全年、湿季和干季3种情景及3种不同空间分辨率数据相互耦合下的雨量变化。结果表明，该模型可解释研究区74.5%的年降水空间变异，对湿季降水量解释效果要好于全年和干季两种情景；100 m分辨率下的3种降水模型效果均为最好；降...
基于GIS技术的青海省草地类型分类研究
GIS；青海省；草地类型
2013/6/20
分析青海省50个气象台站1971-2006年的＞0 ℃年积温平均值和年降水量平均值，以及各站的海拔高度和纬度值，建立年积温和年降水量的估算方程。在GIS环境下，根据年积温和年降水的估算方程，以及青海省高程资料，插值出分辨率为4 km×4 km的各个格点的年积温和年降水量值，然后根据湿润度公式计算出每个格点的湿润度值，最后根据综合顺序分类法第一级——类的检索图，确定各个格点的草地类型。研究结果表明，...