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    Based on the long-term serial NOAA/NDVI dataset during 1983-1999 and SPOT/VGT dataset in 2001, the land use/cover change information in the 13 provinces of northern China was extracted based on the analysis of the cultivated landscape characteristics at first, then the effects of human activities on cultivated land process were explored by GIS and the driving forces of cultivated land change were investigated.
    利用1983年1月至1999年12月长时间序列NOAA/AVHRR NDVI 数据和2001年逐旬SPOT/VGT 数据,获取了中国北方13省1980s初期、1990s初期、1990s末期和2000s初期地表土地覆盖特征,阐述了中国北方13省的耕地变化过程,并重点讨论了人类活动对耕地变化特征的影响和耕地变化的驱动力。
    The vegetation cover changes in China since 1998 to 2002 are assessed with Normalized Difference Vegetation Index(NDVI) data.
    以长时间序列VGT-NDVI为数据源,利用年内变异系数与年份回归分析的方法对1998-2002年间的中国陆地植被NDVI的变化情况进行了分析.
    We find β and σ-convergence for industry in the sub-period of 1997-2002, although there is insignificant divergence in whole sample period.
    一个有趣的发现是,虽然工业在1990~2002年有发散趋势,但是在1997~2002年的子时段里出现了绝对β-收敛和σ-收敛,这个新现象值得用未来更长的时间序列来检验。
    STRAIN TIDE OBSERVATION AND ITS HARMONIC ANALYSIS RESULTS OF LDNG SERIES IN CHINA
    我国应变固体潮观测及其长时间序列的调和分析结果
    LONG SEQUENTIAL METHOD OF GRAZING POINTS IN GPS OCCULTATION TECHNIQUE OF MONITORING OF THE EARTH ATMOSPHERE
    GPS无线电掩星监测地球大气技术中的一种长时间序列地面测点方法
    Long Time Series and Multi-variable Forecasting Model on River Water-circumstance
    河道水情长时间序列多变量预测模型
    Analysis and research on effects of sediment reduction through soil and water conservation in large river basins in USA
    美国大流域长时间序列水土保持减沙效果分析
    Research on Mining Linear Correlation of Long Time Series with Time Delays
    带时延的长时间序列线性相关挖掘研究
    Subsidence velocity retrieval from long-term coherent targets in radar interferometric stacks
    利用长时间序列相干目标获取地面沉降场
    3. The relationship between the long-term water quality and social economic development demonstrated that industrial pollution was the most important factor worsening the water quality. The ratio of the third industry in GDP was also of great prominence to the water quality.
    3.长时间序列的水环境质量与社会经济发展关系研究表明,工业废水排放量,即工业污染是影响城市水环境质量的主要因素,第三产业产值占GDP的比重对水环境的影响也非常显著。
    First, based on both SeaWiFS and MODIS data, chlorophyll variety in the China Shelf Sea was analyzed on basis of long-term series data. The comparison and impact mechanism were also discussed.
    首先,在综合利用SeaWiFS和MODIS数据的基础上,本论文采用长时间序列数据对多年整个中国陆架海的叶绿素a浓度的变化情况进行研究和分析,并进行了对比分析,同时从影响机理方面也进行了探讨。
    1. The selection of the Coherent Target (CT) As the objects we study on the long time scale, the accuracy of the selection effects the result of this algorithm directly.
    1、相干点的选择,作为长时间序列地表形变的研究对象,对相干点选择的准确度直接影响了最后反演的结果。
    (2) The stable regression model should be established.
    (2) 应利用更长时间序列的遥感影像,建立阿勒泰草地长期稳定适宜的遥感估产模型,建立草地生态环境安全衡量指标体系和监测预警系统。
 

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