A spatially explicit reconstruction of cropland cover in China from 1661 to 1996 | |
Li S. C.; He, F. N.; Zhang, X. Z. | |
2016 | |
关键词 | Historical cropland cover Spatially explicit Reconstruction Land suitability for cultivation land-use change annual net flux past 300 years carbon atmosphere climate region |
英文摘要 | Reconstruction of cropland cover is crucial for assessing human impact on the environment. In this study, based on existing studies concerning historical cropland, population data and government inventories, we obtained a provincial cropland area dataset of China for 1661-1996 via collection, revision and reconstruction. Then, the provincial cropland area was allocated into grid cells of 10 x 10 km depending on the land suitability for cultivation. Our reconstruction indicates that cropland increased from similar to 55.5 x 10(4) km(2) in 1661 to similar to 130.0 x 10(4) km(2) in 1996. From 1661 to 1873, cropland expanded tremendously in the Sichuan Basin, and land reclamation was greatly enhanced in North China Plain. For 1873-1980, agricultural development occurred primarily in northeastern China. After 1980, most provinces in the traditionally cultivated region of China experienced decreases in cropland area. In comparison with satellite-based data for 2000, we found that our reconstruction generally captures the spatial distribution of cropland. Also, differences are mostly < 20 % (-20 to 20 %). Compared with HYDE 3.1 dataset, which is designed for the global scale, our model is more suitable for reconstructing the historical crop cover of China at 10 x 10 km grid scale. Our reconstruction can be used in climate models to study the impact of crop cover change on the climate and carbon cycle. |
出处 | Regional Environmental Change |
卷 | 16 |
期 | 2 |
页 | 417-428 |
语种 | 英语 |
ISSN号 | 1436-3798 |
DOI标识 | 10.1007/s10113-014-0751-4 |
内容类型 | SCI/SSCI论文 |
源URL | [http://ir.igsnrr.ac.cn/handle/311030/43025] |
专题 | 地理科学与资源研究所_历年回溯文献 |
推荐引用方式 GB/T 7714 | Li S. C.,He, F. N.,Zhang, X. Z.. A spatially explicit reconstruction of cropland cover in China from 1661 to 1996. 2016. |
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