CAJ | 학술논문

以京津唐地区为例，基于SEBS模型，利用MODIS遥感数据和气象数据，计算了2000、2005和2010年四季代表月份的平均日蒸散发量，并结合3期土地利用图，定量评估了由城市扩张引起的日蒸散发量的变化。结果表明，不同土地利用类型的日蒸散发量在不同季节表现出不同的分布规律，春、夏和秋季的日蒸散发量分布规律为水域>林地>草地>耕地>城市用地，冬季的日蒸散发量在三年的分布不一致：2000年为林地>草地>水域>城市用地>耕地，2005年为水域>林地>草地>耕地>城市用地，2010年为林地>水域>草地>城市用地>耕地。以研究区土地利用变化不明显的区域为背景区域，评估了除土地利用/覆被变化外的其他因素对京津唐地区夏季日蒸散发的影响。除去该影响后得出土地利用/覆被变化，对日蒸散发的影响，结果表明，各土地利用类型转化为城市用地会使日蒸散发降低，且水域转化成城市用地后，其日蒸散发量降低最多，2000-2005年降低了0.977mm，2000-2010年其降低值为0.983mm。
이경진당지구위례，기우SEBS모형，이용MODIS요감수거화기상수거，계산료2000、2005화2010년사계대표월빈적평균일증산발량，병결합3기토지이용도，정량평고료유성시확장인기적일증산발량적변화。결과표명，불동토지이용류형적일증산발량재불동계절표현출불동적분포규률，춘、하화추계적일증산발량분포규률위수역>임지>초지>경지>성시용지，동계적일증산발량재삼년적분포불일치：2000년위임지>초지>수역>성시용지>경지，2005년위수역>임지>초지>경지>성시용지，2010년위임지>수역>초지>성시용지>경지。이연구구토지이용변화불명현적구역위배경구역，평고료제토지이용/복피변화외적기타인소대경진당지구하계일증산발적영향。제거해영향후득출토지이용/복피변화，대일증산발적영향，결과표명，각토지이용류형전화위성시용지회사일증산발강저，차수역전화성성시용지후，기일증산발량강저최다，2000-2005년강저료0.977mm，2000-2010년기강저치위0.983mm。
Evapotranspiration(ET) is a key of water resources management. Even in the same climatic and meteo-rological conditions, ET may have a different value among different land use / land cover. So it’s important to es-timate the distribution of the ET. The main objectives of this study are: (1) to estimate ET of different land use /land cover in different seasons; and (2) to find out the impact of urbanization on ET. In this article, based on SEBS model, remote sensing data and meteorological data were used to calculate the average daily ET of Bei-jing-Tianjin-Tangshan Area. Combined the information of land use / land cover changed area and the result of ET estimation map, the total change of ET could be calculated. Taking ET of land cover pixels without any change as the control plots and ruling out the change of ET of the background then isolated the impact of LUCC on ET in Beijing-Tianjin-Tangshan Area. We found out the temporal distribution of daily ET in the four seasons was decreased gradually in the sequence of summer, spring, fall and winter. Furthermore, the spatial distribution was that the ET decreased gradually in the sequence of water area, woodland, grassland, cultivated land and ur-ban land in summer, spring and fall. The sequence of daily ET in winter for the three years was different. In 2000, it was the ET of forest > grassland > water area > urban land > farmland; in 2005, it was ET of water ar-ea > forest > grassland > farmland > urban land; and in 2010, it was ET of forest > water area > grassland> urban land > farmland. Finally, besides the effect of non-land use factors, ET decreased when land use convert to urban land. When land use converts from water area to urban land, the decrease of ET was the most significant, the fol-lowing was grassland, woodland and cultivated land in sequence.