Reconstruction of cropland area at Lu scale and its spatialtemporal characteristics in the Northern Song Dynasty

被引：0
|
作者：
He F. [1 ]
Li M. [1 ,2 ]
Liu H. [1 ]
机构：
[1] Key Laboratory of Land Surface Pattern and Simulation, Institute of Geographic Sciences and Natural Resources Research, CAS, Beijing
[2] University of Chinese Academy of Sciences, Beijing
来源：
Dili Xuebao/Acta Geographica Sinica | 2016年 / 71卷 / 11期
基金：
中国国家自然科学基金;
关键词：
Cropland area; LUCC; Reconstruction at Lu scale; Spatial-temporal characteristics; The Northern Song Dynasty;
D O I：
10.11821/dlxb201611008
中图分类号：
学科分类号：
摘要：
Based on "Cropland Taxes" and "the Number of Households" data recorded in historical documents, this paper estimated cropland area of the Northern Song Dynasty by analyzing some society factors in this dynasty, including land use policies and taxation system. Besides, by quantifying the relationship among population proportion, per capita cropland and cropland spatial pattern in the mid-Northern Song Dynasty, we designed a cropland distribution model. And the model was used to reconstruct cropland area at Lu (administrative region of the Northern Song Dynasty) scale for AD 976, 997, 1066 and 1078. The results are shown as follows: (1) The cropland area of the whole study area for AD 976, 997, 1066 and 1078 of the Northern Song Dynasty were about 468.27 million mu (Chinese area unit, 1 mu=666.7 m2), 495.53 million mu, 697.65 million mu and 731.94 million mu, respectively, and 264 million mu was increased for AD 976-1078. The annual growth rate of cropland area was about 4.4‰, and the reclamation rate (i.e. ratio of cropland area to total land area) increased from 10.7% to 16.8%, and per capita cropland area decreased from 15.7 mu to 8.4 mu. (2) In terms of the characteristics of cropland spatial pattern change, the reclamation rate of the Southeast, Northern and Southwest in the Northern Song territory increased by 12.0%, 5.2% and 1.2%, respectively, and that of some regions of the Yangtze River Plain increased to more than 40%, and for the North China Plain the reclamation rate increased to more than 20%. The reclamation rate of the Southwest (except the Chengdu Plain) in the Northern Song territory was less than 6%. (3) The evaluation results show that the absolute relative error of 84.2% Lu was less than 20%, so the cropland distribution model is feasible. Therefore, our reconstruction results can reflect the spatial-temporal characteristics of cropland area in the Northern Song Dynasty. © 2016, Science Press. All right reserved.
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页码：1967 / 1978
页数：11
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