CAJ | 학술논문

研究以东北黑土区内的依安、拜泉县为研究区,在收集两县的气候、图像等资料的基础上,利用RS和GIS方法来讨论黑土区气候生产潜力与归一化植被指数(NDVI)的变化和二者的关系.结果表明,研究区在1979~2001年的22年间土地利用/覆盖变化的总体趋势为:耕地面积和居民地面积表现为较大幅度增加,分别增加了46559和8152 hm2,而草地面积则减少了62163 hm2;归一化植被指数与气候生产潜力在研究区的分布趋势有一致性,由西南向东北数值逐渐升高,最高值出现在拜泉县的东北部,最低值出现在依安县的西南部.通过以上结果提取数据分析进行黑土区气候生产潜力与植被指数相关性的研究,结果为气候生产潜力与归一化植被指数呈显著的正相关性.
연구이동북흑토구내적의안、배천현위연구구,재수집량현적기후、도상등자료적기출상,이용RS화GIS방법래토론흑토구기후생산잠력여귀일화식피지수(NDVI)적변화화이자적관계.결과표명,연구구재1979~2001년적22년간토지이용/복개변화적총체추세위:경지면적화거민지면적표현위교대폭도증가,분별증가료46559화8152 hm2,이초지면적칙감소료62163 hm2;귀일화식피지수여기후생산잠력재연구구적분포추세유일치성,유서남향동북수치축점승고,최고치출현재배천현적동북부,최저치출현재의안현적서남부.통과이상결과제취수거분석진행흑토구기후생산잠력여식피지수상관성적연구,결과위기후생산잠력여귀일화식피지수정현저적정상관성.
Two counties Yi'an and Baiquan in northeast black soil zone were taken as the research areas and the data of climate and images in the two counties were collected, and the changes of climatic potential productivity and normalized difference vegetation index (NDVI) in black soil zone and the relationship between them were discussed by using the methods of RS and GIS. The results showed that, the general trend of land change on usage and coverage in research area from 1979 to 2001 was that cultivated area and residential area increased greatly by 46 559 hm2 and 8 152 hm2, respectively, but the grassland area decreased by 62 163 hm2. The distribution trends of NDVI and climatic potential productivity in research areas had a certain consistency, of which the values increase gradually from southwest to northeast, with the peak in the northeast of Baiquan and the lowest value in the southwest of Yi'an. With an analysis on data extracted from the above results, research on correlation of climatic potential productivity and vegetation index in black soil zone was did, of which the result was that climatic potential productivity and NDVI showed a significant positive correlation.