Monitoring Land-Use/Land-Cover Changes at a Provincial Large Scale Using an Object-Oriented Technique and Medium-Resolution Remote-Sensing Images

作     者：Luo, Kaisheng Li, Bingjuan Moiwo, Juana P. 

作者机构：Nanjing Univ Informat Sci & Technol Sch Remote Sensing & Geomat Engn Nanjing 210044 Jiangsu Peoples R China Chinese Acad Sci Inst Soil Sci Nanjing 210008 Peoples R China Univ Chinese Acad Sci Nanjing 210008 Peoples R China Njala Univ Sch Technol Dept Agr Engn Freetown Sierra Leone 

出 版 物：《REMOTE SENSING》 (Remote Sens.)

年 卷 期：2018年第10卷第12期

页      面：2012-2012页

核心收录：

学科分类：0830[工学-环境科学与工程（可授工学、理学、农学学位）] 1002[医学-临床医学] 070801[理学-固体地球物理学] 07[理学] 08[工学] 0708[理学-地球物理学] 0816[工学-测绘科学与技术] 

基　　金：National Natural Science Foundation of China Foundation of Ministry of Culture and Tourism of China [18TAAG018] Start-up Foundation for Introducing Talent of NUIST [2017r091] College Student' Practice Innovation Training Program of NUIST [201810300096X] 

主　　题：HJ-CCD images object-based image analysis change monitoring provincial scale 

摘      要：An object-based image analysis (OBIA) technique is replacing traditional pixel-based methods and setting a new standard for monitoring land-use/land-cover changes (LUCC). To date, however, studies have focused mainly on small-scale exploratory experiments and high-resolution remote-sensing images. Therefore, this study used OBIA techniques and medium-resolution Chinese HJ-CCD images to monitor LUCC at the provincial scale. The results showed that while woodland was mainly distributed in the west, south, and east mountain areas of Hunan Province, the west had the largest area and most continuous distribution. Wetland was distributed mainly in the northern plain area, and cultivated land was distributed mainly in the central and northern plains and mountain valleys. The largest impervious surface was the Changzhutan urban agglomerate in the northeast plain area. The spatial distribution of land cover in Hunan Province was closely related to topography, government policy, and economic development. For the period 2000-2010, the areas of cultivated land transformed into woodland, grassland, and wetland were 183.87 km(2), 5.57 km(2), and 70.02 km(2), respectively, indicating that the government-promoted ecologically engineered construction was yielding some results. The rapid economic growth and urbanization, high resource development intensity, and other natural factors offset the gains made in ecologically engineered construction and in increasing forest and wetland areas, respectively, by 229.82 km(2) and 132.12 km(2) from 2000 to 2010 in Hunan Province. The results also showed large spatial differences in change amplitude (LUCCA), change speed (LUCCS), and transformation processes in Hunan Province. The Changzhutan urban agglomerate and the surrounding prefectures had the largest LUCCA and LUCCS, where the dominant land cover accounted for the conversion of some 189.76 km(2) of cultivated land, 129.30 km(2) of woodland, and 6.12 km(2) of wetland into impervious surfac