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- With global warming, the temporal and spatial variability of soil respiration and its sensitivity to temperature has been a central interest to ecologist in global change field. 随着全球气候变暖趋势逐渐明显,土壤呼吸的时空变异及其对温度变化的响应已成为生态学研究的重要内容之一。
- Non\|point sources pollution loading and its temporal and spatial variability were discussed through the integration of trial experiments,GIS techniques and pollution models in Suzhou creek. 将模拟试验、GIS技术和非点源污染模型相结合,探讨了苏州河流域的非点源污染负荷及时空演变规律。
- Spatial variability of soil water retention curves on a forested hill-slope. 森林流域坡面林地土壤水分运动特征参数空间异质性研究。
- Statistical parameters of soil sampling data and its spatial variability. 田间土壤采样数据的统计特征与空间变异性研究。
- temporal and spatial variability 时空分异
- The existing temporal spatial analysis methods, such as microstate, frequency domain analysis and event related coherence, are introduced in this paper. 本文详细介绍了这些分析方法。
- It has been a hotspot to use the geostatistics combined with GIS to study the soil spatial variability at present. 利用地统计学,结合GIS技术来研究土壤性质的空间变异,已成为目前土壤学研究的热点之一。
- The spatial variability of regional water requirement(WR) and water deficient ratio(WRD) are studied with geostatistics. 应用地统计学方法研究区域需水量和缺水率的空间变异性。
- The spatial variability of regional water requirement (WR) and water deficient ratio (WRD) are studied with geostatistics. 摘要应用地统计学方法研究区域需水量和缺水率的空间变异性。
- Surface evapotranspiration has obvious spatial variability, but traditional measurement methods are based on point measurements. 陆地表面的腾发量分布具有很大的空间变异性,而传统方法只能进行点上的计算。
- The reasonable sampling number in field for SOM is based on the spatial variability of nutrient factor and the required data precision. 草地土壤有机质合理取样数取决于有机质要素自身空间变异程度和人们对数据精度的要求。
- Spatial variability of soil moisture in the irrigation district is analyzed by integrating Geostatistics and general theory of statistics. 将提出的墒情监测方法及区域土壤水分预报方法,应用于构建整个灌区的实时灌溉预报模型之中,并在灌溉预报过程中进行实时修正。
- The reasonable sampling number of grassland soil nutrients should be based on classic statistical characteristics and spatial variability. 草地土壤有机质合理采样数应建立在统计特性和空间结构性基础上。
- The spatial variability of soil organic matter and phosphorous content was larger than that of the other nutrient in topsoil of artificial forestland. 人工林表层土壤养分中有机质和速效磷的空间变异性较大;
- temporal spatial data organization 时空数据组织
- The result of SVD indicates that the anomalous wind speed on sea surface is one of the important factors responsible for the temporal and spatial variabilities of anomalous heat fluxes. 奇异值分解方法的分析结果表明异常海表面风场是异常潜热和感热通量场时空变化的重要影响因素。
- A short-term, multi-scale assessment to quantify spatial variability in air quality is a valuable asset in designing an air-quality monitoring network in mountainous regions. 一项短期、多尺度的评价来从数量上确定空气质量的空间变动,这对设计山区空气质量监测网络来说是一项很有价值的资源。
- Classical statistical analyses show significant spatial variability of soil erodibility K values at a scale of small watershed, the variance coefficient of which is 39.94%. 经典统计学方法分析表明,在小流域尺度下土壤可蚀性K值存在很强的空间变异性,其变异系数达39.;94%25。
- GIS will be a very useful working platform for spatial variability analysis of soil nutrients and precision agriculture and sustainability agricultural eco... 以GIS为工作平台利用地统计学等先进方法分析区城土壤养分的空间分异特征时精准施肥、保护生态环境和优化农业生产管理有着重要的意义。图3,表1,参9。
- The main innovations and ameliorations are as follows:Firstly, based upon the study on spatial variability of soil water, soil moisture monitoring method is brought forward. 论文的主要改进及创新:(1)研究了灌区土壤水分空间变异性,并以此为基础提出了较为合理的灌区墒情监测方法。