in this paper, a numerical model and a statistical model are applied to analyze the temporal and spatial variation of erosion-deposition and the morphological evolution of the huanghe delta.
according to the monitoring data of pm10 concentration from 2001 to 2005 in taiyuan, the temporal and spatial variation features and the causes of pm10 were studied.
the temporal and spatial variation features of soil temperatures of intercropping field and those of monoculture field were compared and analyzed.
同时对间作和单作田土壤温度时空变化特征进行了对比分析。
it is shown that the mesoscale low-vortex is one of the dominant systems in the process and its characteristics on temporal and spatial variation is coincident with that of center of precipitation.
field observations show that: (1) temporal and spatial variation of salinity is mainly controlled runoff discharge, flow distribution ratio of the outlets, tidal range and geomorphologic situation;
测验资料统计分析表明:(1)径流大小、汊道分流比、潮汐强弱和地形条件是控制盐度时空变化的主要要素;
based on gis, temporal and spatial variation of land utilization in wind-water erosion cross region of northern shaanxi from 1986 to 1997 was analyzed.
by using the rich historical earthquake data, the author studied some features of temporal and spatial variation of strong seismicity in the sea of japan.
利用日本海区丰富的震史资料,研究了该区强震活动时—空变化的某些特征。
this paper studied the ecological and physiological features, the temporal and spatial variation regular of sunflower root.
根据油料向日葵根系的实测资料,分析了根系的生态和生理特点及根系生长的时空变化规律。
the temporal and spatial variation of the water consumption of the three kinds of ecosystem was analyzed.
不同植被复合系统的耗水、渗漏状况有一定的差异性。
the authors established the forest resources prediction model of temporal and spatial variation by markov model in the three gorges reservoir region of western hubei.