Temporal And Spatial Distribution Of The Winter Crop Season About Climate Productive Potential About Banana In Guangxi Based On GIS

We analyse winter crop season(November of the year-in May the following year) climate productive potential rational utilization of local winter season climate resources in Guangxi,and give full play to winter crop season climate productive potential.We formulate corresponding countermeasures and improve the productivity.All have very important theoretical significance and practical effect. Then,we study winter crop season cultivation about bananas in Guangxi that is conducive to the development of winter agriculture in Guangxi.In this paper,we collated and analyzed spatio-temporal variability of the winter crop season monthly and daily winter climate data of91meteorological stations in Guangxi nearly30years.We fully understanood the Guangxi winter climate background.By choosing the winter climate data from2001to2009.We build the climate productive potential model about bananas in Guangxi in the winter crop season through the use of Agro-Ecological Zone(AEZ).Combination of two kinds of interpolation methods in GIS,we made the spatial interpolation operation and analyzed its spatial and temporal distribution features.Then we used the empirical orthogonal function (EOF) to verify and predict it through the first and second eigenvector space.The main results are as follows:1、Guangxi climate changes in resource time performance:the mean sunshine duration, the mean surface air temperature,the extreme minimum surface air temperature,the mean precipitation,the relative humidity,the mean evaporation capacity and the mean atmospheric pressure in winter crop season were lower than the non-winter crop season.But the extreme maximum surface air temperature and the mean wind speed didn’t change much throughout the year.2、Spatial distribution of the winter crop season about the total sunshine duration, the mean surface air temperature and total evaporation capacity was largely decreasing from south to north. The extreme minimum surface air temperature in southwestern Guangxi was higher than it in northeast Guangxi. The total precipitation in western Guangxi were higher than it in east Guangxi.But the extreme maximum surface air temperature in western Guangxi were highest.The relative humidity in south Guangxi and the most areas of north Guangxi was higher than other areas in Guangxi.Then the mean wind speed in south coastal areas Guangxi and the most areas of northeast Guangxi was higher than other areas in Guangxi.However the mean atmospheric pressure was gradually increasing from northwest to southeast in Guangxi.3、Overall temporal variation of the winter crop season of potential photosynthesis about bananas was in an increasing trend.But potential photosynthesis had very large fluctuations. Spatial distribution of the winter crop season of potential photosynthesis about bananas was relatively small in Luocheng,Hechi,etc in north Guangxi and the most areas of northeast Guangxi.But the winter crop season of potential photosynthesis was relatively big in south coastal areas and northwest part of the region in Guangxi. Potential photosynthesis would be on the rise in the future in Rongxian,Pubei,etc.4、Overall temporal variation of the winter crop season of photosynthetic thermal productivity about bananas was in a decrease trend.Spatial distribution of the winter crop season of potential photosynthesis about bananas had an increasing trend from the northeast areas in Guangxi to the south coastal areas in Guangxi and from the plain in east Guangxi to the mountain in west Guangxi.Photosynthetic thermal productivity about bananas in the south Guangxi was clearly higher than it in northeast Guangxi.Photosynthetic thermal productivity about bananas in the east Guangxi was lower than it in west Guangxi.Photosynthetic thermal productivity would be on the rise in the future in Qinzhou,Bobai and Rongxian,etc.5、Overall temporal variation of the winter crop season of climate productive potential about bananas was in a decrease trend.Spatial distribution of the winter crop season of climate productive potential about bananas was increasing from north to south. Climate productive potential was quite low in north Guangxi.Climate productive potential was quite high in central Guangxi and the most areas of south Guangxi.Climate productive potential would be on the rise in the future in Qinzhou and Linshan,etc.