CAJ | 학술논문

利用多时相遥感影像对密云县植被动态变化发展过程进行分析，为当地气候变化和水土保持提供科学依据。研究中以3幅TM/ETM、密云县大比例尺地形图为基础。应用相关的遥感软件对3幅影像进行归一化植被指数（ NDVI）及像元植被盖度的提取，结合假彩色合成原理，将提取后的NDVI影像及植被盖度影像分别进行假彩色（ RGB）合成，将密云县植被的变化分为8种类别。密云县植被稳定的区域占18．26％，面积为40902．21 hm2，其中高植被覆盖区域占12．25％，面积为27439．65；植被不稳定的区域占81．74％，面积为183150．54 hm2；水域面积减少44．44％，减少面积为9947．9424 hm2；在这17 a中，密云县地表植被没有遭到严重的破坏，但一些区域植被盖度发生了明显的变化，水域面积明显减少。
이용다시상요감영상대밀운현식피동태변화발전과정진행분석，위당지기후변화화수토보지제공과학의거。연구중이3폭TM/ETM、밀운현대비례척지형도위기출。응용상관적요감연건대3폭영상진행귀일화식피지수（ NDVI）급상원식피개도적제취，결합가채색합성원리，장제취후적NDVI영상급식피개도영상분별진행가채색（ RGB）합성，장밀운현식피적변화분위8충유별。밀운현식피은정적구역점18．26％，면적위40902．21 hm2，기중고식피복개구역점12．25％，면적위27439．65；식피불은정적구역점81．74％，면적위183150．54 hm2；수역면적감소44．44％，감소면적위9947．9424 hm2；재저17 a중，밀운현지표식피몰유조도엄중적파배，단일사구역식피개도발생료명현적변화，수역면적명현감소。
We used multi-temporal remote sensing images to analyze the vegetation dynamic change in Miyun County to provide scientific basis for the local climate, soil and water conservation.Based on three TM/ETM images and large-scale topo-graphic map of Miyun County, we extracted NDVI and vegetation cover pixels of the imagines.Then, combining with the false color composite principle, we used false color ( RGB) synthesis for the normalized differential vegetation index ( ND-VI) and vegetation cover imagines to divide the vegetation into eight categories.The stable vegetation of Miyun County ac-counts for 18.26%, 40 902.21 hm2, and the high vegetation coverage area accounts for 12.25%, 27 439.65 hm2.Unsta-ble vegetation area accounts for 81.74%, 183 150.54 hm2.The water area reduces by 4.44%, 9 947.942 4 hm2.During 17 years, the vegetation in Miyun County was not seriously damaged, but some regional vegetation coverage changed seri-ously and the water area reduced significantly .