文章基本信息

标题：Reconstruction of cropland cover changes in the Shandong Province over the past 300 years
本地全文：下载
作者：Yu Ye ; Xueqiong Wei ; Fan Li 等
期刊名称：Scientific Reports
电子版ISSN：2045-2322
出版年度：2015
卷号：5
DOI：10.1038/srep13642
出版社：Springer Nature
摘要：To advance global change rssearch, it is essential to reconstruct changes in historical cropland coverage on a regional scale in China. This paper presents data collected from 244 local gazetteers, government statistical records and remote-sensing land cover data from the Shandong Province. The study reconstructed the spatial distribution of the rate of reclaimed land at the county level and compared this map with a map of the current spatial distribution of suitable cropland. The following conclusions were drawn: (i) The rate of cultivated land grew exponentially. The extent of reconstruction in cropland areas during the 17^th century, 18^th~19^th centuries, the beginning of the 20^th century, the 1980 s, and the beginning of the 20^th century are 4.51 mha, 6.51 mha, 7.52 mha, 8.53 mha and 11.80–12.00 mha, respectively. (ii) Several agricultural centers formed during the late 17^th century. Until the beginning of the 20^th century, the reclamation rate increased rapidly near the four southern lakes, which are located in the Zaozhuang and Linyi regions. (iii) Most reclamation activities before the 19^th century occurred in suitable agricultural areas, and the cultivated land was already reclaimed by the beginning of the 20^th century.