Grid-based study on the potential crop productivity of cultivated land in China
文献类型：会议论文
| 作者 | Liu B. Q. ; Feng Z. M. ; Yang Y. Z. ; Shi R. H. ; Ieee |
| 出版日期 | 2005 |
| 关键词 | potential crop productivity photosynthetic thermal productivity agro-ecological zoning |
| 页码 | 3101-3104 |
| 英文摘要 | By intearating the land use dada extracted from remote sensing imaging, meteorological data and crop production model in GIS environment, this paper takes winter wheat as a case to calculate and evaluate the potential crop productivity of cultivated land limited by radiation and temperature, namely photosynthetic thermal productivity in China based on 1 km x 1 km grid. The results show: With the changing of spatial position, the winter wheat photosynthetic thermal productivity of cultivated land in China is usually changing from 3000 kg/ha to 14150 ka/ha. Furthermore, we compare the potential productivity of provinces with actual yield of ten main production provinces of winter wheat by combining China's administrative boundary map and potential land productivity map. In ten main production provinces, winter wheat PTP of most provinces is close to or more than 7000 kg/ha except Sichuan province's is 4211 kg/ha. The highest is Jiangsu province (9930 kg/ha), the lowest is Sichuan province (4211 kg/ha). There are five provinces where winter wheat utilizing efficiency of ;radiation and temperature are higher than 50%, Sichuan province is the highest (71%), the lowest is Shaanxi province, due to lack of water, only 35%. |
| 收录类别 | CPCI |
| 会议录出版者 | Ieee |
| 语种 | 英语 |
| ISBN号 | 0-7803-9050-4 |
| 源URL | [http://ir.igsnrr.ac.cn/handle/311030/25178]  |
| 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 | Liu B. Q.,Feng Z. M.,Yang Y. Z.,et al. Grid-based study on the potential crop productivity of cultivated land in China[C]. 见:. |
入库方式： OAI收割
来源：地理科学与资源研究所
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