CAJ | 학술논문

为评估吉林西部近期盐碱地变化趋势，以吉林省白城市为研究区，利用2000年、2010年和2014年的遥感影像，解译分析该区盐碱地景观格局变化特征；并通过 CA-Markov 模型对其未来演变进行情景模拟。结果发现，近14年来吉林西部白城市的盐碱地面积呈减少趋势，净减603.39 km2，年均减少1.12%；景观分离度指数增加，景观分形维数、景观破碎度、景观蔓延度指数均有所下降；该区盐碱地景观斑块结构变得简单，部分斑块因面积缩减而彼此分隔独立；未来6年内白城市盐碱地面积仍呈减少趋势，但速度放缓，减少区域集中于乾安县以西地区。
위평고길림서부근기염감지변화추세，이길림성백성시위연구구，이용2000년、2010년화2014년적요감영상，해역분석해구염감지경관격국변화특정；병통과 CA-Markov 모형대기미래연변진행정경모의。결과발현，근14년래길림서부백성시적염감지면적정감소추세，정감603.39 km2，년균감소1.12%；경관분리도지수증가，경관분형유수、경관파쇄도、경관만연도지수균유소하강；해구염감지경관반괴결구변득간단，부분반괴인면적축감이피차분격독립；미래6년내백성시염감지면적잉정감소추세，단속도방완，감소구역집중우건안현이서지구。
In order to assess the recenttrends ofsaline-alkalisoilin the w est of Jilin, the textused the rem ote sensing images of2000, 2010 and 2014, and took Baicheng City as the study area, interpreted and analyzed the changes in the characteristics of landscape pattern.A nd scenario simulated the evolution in future by the CA -M arkov m odel.The results show ed thatin Baicheng City, the saline-alkalisoilpresented a decreasing trend fornearly 14 years and had netdecreased 603.39 km 2, w hich atannualaverage decrease of 1.12 % .Landscape separation index had increased, w hile landscape fractal dimension, landscape fragm entation degree, landscape spread index had decreased. The landscape patchesofthe saline-alkalisoilhad becom e simple in thisarea and som e partofpatches had independentofeach other.The area of saline-alkali soil w ill still appeara decreasing trend in Baicheng City in the next 6 years, but the speed w ill be slowed down, and the reducing regional w ill concentrate on the w est of Qian'an Country.