文献类型: 外文期刊
作者: Song, Xiaoyu 1 ; Cui, Fangning 1 ; Gu, Xiaohe 1 ; Xu, Xingang 1 ; Wang Jihua 3 ;
作者机构: 1.Beijing Acad Agr & Forestry Sci, Beijing Res Ctr Informat Technol Agr, Beijing 100097, Peoples R China
2.Shang dong Jin Iing Min Ind Liabil Co, Zibo 255081, Peoples R China
3.Beijing Acad Agr & Forestry Sci, BRCAST, Beijing 100097, Peoples R China
关键词: Winter wheat;transform monitoring;Landsat-TM images
期刊名称:LAND SURFACE REMOTE SENSING II
ISSN: 0277-786X
年卷期: 2014 年 9260 卷
页码:
收录情况: SCI
摘要: Winter wheat is one of the most important crops planted in Beijing suburb. In recent 20 years, winter wheat planted area decreased obviously in Beijing area owning to the urbanization process. This study focuses on the winter wheat planted area transformation monitoring of Beijing suburb from 1992 to 2009 through remote sensing technique. Multi-temporal Landsat-TM images are collected during the winter wheat growth season of 1992,2000 and 2009 and used to analyze the trend and characteristics of winter wheat field variation in Beijing suburb in recent two decades years. The PCA analysis and Tasseled Cap transform technique are adopted in this study for feature classification. The study result shows that the winter wheat planted area in 1992,2000 and 2009 in Beijing is 113671 ha, 84322 ha and 61529 ha, respectively. It indicates that winter wheat planting area in Beijing has a significantly decreasing trend and the total reduced area is 52143 ha from 1992 to 2009. Winter wheat planted area is decreased by 29349 ha from 1992 to 2000. Most of reduced wheat fields are transformed into bare land or used for urban land accounting for 42.8% and 39.7%. Others wheat fields are used for greenhouse and water bodies (fish ponds and water fields), accounting for 13.3% and 3%. The winter wheat field decreased by 22794 ha from 2000 to 2009, more than 41.93% of wheat field is turned into bare land. Reduce field for greenhouse land and water bodies (ponds or water fields) are account for21.61% and 7.79%, respectively.
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