CAJ | 학술논문

以甘肃白龙江流域1977,2002,2010年Landsat影像和30 m分辨率DEM为数据源,基于GIS空间分析技术,建立了白龙江流域土地利用数据库并生成了坡度和地形位指数图,然后将高程、坡度和地形位梯度图分别与土地利用数据叠加,对1977?2010年不同高程带、坡度带和地形位梯度上土地利用变化空间特征进行定量分析.结果表明：近30多年来,在各高程和坡度带上,白龙江流域的建设用地向更高高程和陡坡方向扩展；陡坡耕地面积出现了从增加到减少的逆转；林地变化则相反；受人类干扰程度的强烈影响,草地、水域和未利用地逐年减少.1977?2010年各土地利用类型的地形位分布指数曲线基本形态相似,但在个别地形位上的分布指数有明显变化；建设用地在低地形位的优势性增强,并向高地形位扩展；耕地也向高地形位扩展；林地和草地在低地形位的分布指数先减小后增大；未利用地在高地形位的分布指数增大.建议根据不同的地形梯度,合理调整土地利用结构,尽量避免不合理的土地利用方式和人为干扰,继续实施生态建设工程和人类生产活动管控,为区域土地可持续利用和自然?社会?经济协调发展服务.
이감숙백룡강류역1977,2002,2010년Landsat영상화30 m분변솔DEM위수거원,기우GIS공간분석기술,건립료백룡강류역토지이용수거고병생성료파도화지형위지수도,연후장고정、파도화지형위제도도분별여토지이용수거첩가,대1977?2010년불동고정대、파도대화지형위제도상토지이용변화공간특정진행정량분석.결과표명：근30다년래,재각고정화파도대상,백룡강류역적건설용지향경고고정화두파방향확전；두파경지면적출현료종증가도감소적역전；임지변화칙상반；수인류간우정도적강렬영향,초지、수역화미이용지축년감소.1977?2010년각토지이용류형적지형위분포지수곡선기본형태상사,단재개별지형위상적분포지수유명현변화；건설용지재저지형위적우세성증강,병향고지형위확전；경지야향고지형위확전；임지화초지재저지형위적분포지수선감소후증대；미이용지재고지형위적분포지수증대.건의근거불동적지형제도,합리조정토지이용결구,진량피면불합리적토지이용방식화인위간우,계속실시생태건설공정화인류생산활동관공,위구역토지가지속이용화자연?사회?경제협조발전복무.
By taking 1977, 2002 and 2010 Landsat images and 30 meters resolution DEM as data sources and using the spatial analyzing technology of GIS, a land-use database of Bailongjiang Watershed was established and the slope and terrain niche index charts were produced. The map of DEM, slope and terrain were respectively overlaid with land use landscape data. The spatial variations of land-use of altitudinal, slope and terrain gradient were discussed. The results showed that in recent 30 years, the construction land in Bailongjiang Watershed have extended to higher altitude and slopes, cultivated land of slope land first increased and then decreased, forest land changed from shrinking to gradual recovery. Because of human disturbance, the grassland, unused land and waters decreased. The basic form of terrain distribution index curve of each land use type from 1977 to 2010 was similar, but the distribution index of individual terrains changed obviously. The superiority of construction land in lower terrains increased and extended to higher terrains, and cultivated land was extending to higher terrains too. While the distribution index of woodland and grassland in low terrains first decreased and then increased, unused land in high terrains increased. The land use structure should be adjusted according to the terrain gradient, and unreasonable land use and human disturbance should be avoided. Ecological construction and governance of human activities should be optimized continuously.