CAJ | 학술논문

为探索土地利用对气候变化的影响,基于站点观测资料及 NCEP/NCAR 再分析资料的地面最高、最低温度,采用观测资料减去再分析资料的方法(OMR),研究了1979－2008年我国东部区域地面温度的变化及不同土地利用类型对地面温度变化的影响.研究表明,1979－2008年,研究区域的地面最高、最低温度增加显著,变化趋势分别为0．45和0．47℃/10 a；总体上,土地利用状况导致的地面最高温度变化较小,由此导致的地面最低温度变化占最低温度变化总量的25．1％；城镇对地面最高、最低温度的影响最显著,耕地对地面温度日较差的影响最显著；夏、秋季土地利用状况对地面最高、最低温度变化的影响以降低或者增加幅度较小为主,而在春、冬季则主要导致地面温度上升.
위탐색토지이용대기후변화적영향,기우참점관측자료급 NCEP/NCAR 재분석자료적지면최고、최저온도,채용관측자료감거재분석자료적방법(OMR),연구료1979－2008년아국동부구역지면온도적변화급불동토지이용류형대지면온도변화적영향.연구표명,1979－2008년,연구구역적지면최고、최저온도증가현저,변화추세분별위0．45화0．47℃/10 a；총체상,토지이용상황도치적지면최고온도변화교소,유차도치적지면최저온도변화점최저온도변화총량적25．1％；성진대지면최고、최저온도적영향최현저,경지대지면온도일교차적영향최현저；하、추계토지이용상황대지면최고、최저온도변화적영향이강저혹자증가폭도교소위주,이재춘、동계칙주요도치지면온도상승.
To study the climate effects of land use,the observational data from the NCEP/NCAR reanalysis data were used to analyze the causalities of surface temperature variation by a method called observation minus reanalysis(OMR),which was performed by minus reanalysis data from the observations.The re-sults are as follows:the increments of maximum and minimum temperature are 0.45 ℃/10 a and 0.47 ℃/10 a respectively between 1 979 and 2008;for eastern China as a whole,the land use has very little effect on maximum temperature and it may cause 25.1% of the observed minimum temperature increase;the impact of urban on maximum and minimum temperature are most obvious,and the croplands reduce the diurnal temperature range most prominently;the OMR trends are sensitive to the seasonal change,and the impact of land use on surface temperature decreases or slightly increases in summer and autumn,and obviously increases in spring and winter.