Key Laboratory of Land Surface Pattern and Simulation, Institute of Geographic Sciences and Natural Resources Research, Chinese Academy of Sciences, Beijing, China.
University of Chinese Academy of Sciences, Beijing, China.
Sci Rep. 2018 Sep 10;8(1):13552. doi: 10.1038/s41598-018-31807-6.
To evaluate and improve datasets of anthropogenic land cover change used in local and global climate models, great efforts were made to reconstruct historical land use, including the LandCover 6k project which dedicated to reconstructing human land use over the past 10,000 years. In this study, we utilized historical records, including taxed-cropland and cropland measurement areas, and data on the number of households in eastern China between the 10 century and 13 century in concert with coefficient calibration, model allocation, and per capita cropland estimation to reconstruct areas of provincial cropland for 22 provinces over five time periods. Our reconstructions indicate that total cropland areas of eastern China for AD 1000, 1066, 1078, 1162, and 1215 are 34.74 × 10 ha, 49.42 × 10 ha, 51.62 × 10 ha, 35.21 × 10 ha, and 51.21 × 10 ha, respectively. And the cropland area fluctuated because of dynasty shift and went through three phases. Cropland expansion and contraction mainly occurred in the middle and lower reaches of the Yangtze and Yellow Rivers as well as the Huaihe River Basin, while in some regions far away from battlefields, including northeastern and southern China, cropland area expanded continuously throughout the study period.
为了评估和改进用于地方和全球气候模型的人为土地覆盖变化数据集，人们做出了巨大努力来重建历史土地利用情况，包括致力于重建过去 10000 年人类土地利用情况的 LandCover 6k 项目。在这项研究中，我们利用了历史记录，包括纳税耕地和耕地测量区，以及 10 世纪至 13 世纪中国东部的家庭户数数据，同时进行系数校准、模型分配和人均耕地估计，以重建中国东部 22 个省份五个时期的省级耕地面积。我们的重建结果表明，公元 1000 年、1066 年、1078 年、1162 年和 1215 年中国东部的耕地总面积分别为 34.74×10^4 公顷、49.42×10^4 公顷、51.62×10^4 公顷、35.21×10^4 公顷和 51.21×10^4 公顷。由于朝代更迭，耕地面积出现波动，并经历了三个阶段。耕地的扩张和收缩主要发生在长江、黄河中下游和淮河流域，而在远离战场的一些地区，包括中国东北和南方，耕地面积在整个研究期间持续扩张。
