Based on the monthly mean air tempetature data of 29 stations in Hunan Province in the recent 40 years(in 1960-1999),and using the climate tendency coefficient,climate tendency rate,cumulative departure,power spectrum methods,the temporal-spatial change characteristis of air tempetature of interannual and four seasons over the region are analyzed.

Based on the daily ground temperature data from 107 stations in the Yangtze River Basin from 1961 to 2000,characteristics of spatial-temporal variability of mean ground temperature in the Yangtze River Basin were investigated with the methods of calculating climate tendency rate and temperature changes per decade of mean ground temperature in Yangtze Basin.

The variation trend,abrupt change and anomalous years of annual and seasonal mean soil temperatures at shallow layers in Lhasa were investigated during the period from 1961 to 2005 by using modern statistical diagnostic methods such as linear trend analysis,accumulated variance and signal noise ratio methods.

Using the data of monthly sunshine duration,mean cloudiness,surface vapor pressure and precipitation at 25 meteorological stations over Tibet from 1971 to 2005,the trend variation of the sunshine duration are analyzed by using linear trend analysis.

The climatic trend rate of annual precipitation was arising at 89.

This article makes an analysis of the variation tendency of the hydrologicalelements of Nansi Lake in the past 40 years, using the tendency rate for quantitative description based on the date of measured rainfall, water gage of the lake calculated flow into the lake, available water, annual water consumptioh etc.

With the methods of linear analysis and correlation analysis,the tendency rate of the ground temperature for about 50 years in Puyang and the causes are analyzed.