NDLI: Comparisons of cropland area from multiple datasets over the past 300 years in the traditional cultivated region of China

Content Provider	Springer Nature Link
Author	He, Fanneng Li, Shicheng Zhang, Xuezhen Ge, Quansheng Dai, Junhu
Copyright Year	2013
Abstract	Land use/cover change is an important parameter in the climate and ecological simulations. Although they had been widely used in the community, SAGE dataset and HYDE dataset, the two representative global historical land use datasets, were little assessed about their accuracies in regional scale. Here, we carried out some assessments for the traditional cultivated region of China (TCRC) over last 300 years, by comparing SAGE2010 and HYDE (v3.1) with Chinese Historical Cropland Dataset (CHCD). The comparisons were performed at three spatial scales: entire study area, provincial area and 60 km by 60 km grid cell. The results show that (1) the cropland area from SAGE2010 was much more than that from CHCD; moreover, the growth at a rate of 0.51% from 1700 to 1950 and −0.34% after 1950 were also inconsistent with that from CHCD. (2) HYDE dataset (v3.1) was closer to CHCD dataset than SAGE dataset on entire study area. However, the large biases could be detected at provincial scale and 60 km by 60 km grid cell scale. The percent of grid cells having biases greater than 70% (<-70% or >70%) and 90% (<-90% or >90%) accounted for 56%–63% and 40%–45% of the total grid cells respectively while those having biases range from −10% to 10% and from −30% to 30% account for only 5%–6% and 17% of the total grid cells respectively. (3) Using local historical archives to reconstruct historical dataset with high accuracy would be a valuable way to improve the accuracy of climate and ecological simulation.
Starting Page	978
Ending Page	990
Page Count	13
File Format	PDF
ISSN	1009637X
Journal	Journal of Geographical Sciences
Volume Number	23
Issue Number	6
e-ISSN	18619568
Language	English
Publisher	Springer Berlin Heidelberg
Publisher Date	2013-10-04
Publisher Place	Berlin, Heidelberg
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	cropland datasets comparisons past 300 years traditional cultivated region China Physical Geography Nature Conservation Geographical Information Systems/Cartography Remote Sensing/Photogrammetry
Content Type	Text
Resource Type	Article
Subject	Earth and Planetary Sciences

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4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
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