| Assessment of grain production potential in Songnen Plain and relevant suggestions |
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| DOI：10.7606/j.issn.1000-7601.2013.03.33 |
| Key Words: food production potential AHP accumulation factor Songnen plain |
| Author Name | Affiliation | | YANG Fei | State Key Laboratory of Resources and Environmental lnformation System, Institute of Ceographic Science and Natural Resources Research, CAS, Beijing 100101, China | | YAO Zuofang | The Beijing National Technology Transfer Center of Chinese Academy of Sciences, Beijing 100086, China | | LIU Xingtu | Northeast lnstitute of Geography and Agro-ecology， Chinese Academy of Sciences, Changchun, Jilin 130012, China | | YAN Minhua | Northeast lnstitute of Geography and Agro-ecology， Chinese Academy of Sciences, Changchun, Jilin 130012, China |
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| Abstract: |
| Songnen plain production potential and contributions of its major impact factors were assessed by using analytic hierarchy process(AHP) method derived from Aecumulation Factor Sequence Evaluating weight method. Recom-mendations and some suggestions were proposed based on the study results and the eurrent situation of Songnen plain grain production. The study results showed that Harbin, Suihua and Changehun had the highest grain produetion potential, and Heihe City had the smallest one. Water and soil resource and climatic condition were major limit factors causing the difference of production potential, and contribution weight of both of them were 0.28. The second factor causing produetion potential difference was science and technology investment, and its contribution weight was 0.25. In Songnen Plain, black soil ratio was the largest faetor determining the food produetion potential; its contribution weight was 0.22. Average temperature and fertilizer use were also the important faetors for food production potential, and their contribution weights were 0.13 and 0.10. In conclusion, to improve food production, it is very important to enhance the protection of black soil and strengthen the construction of farmland water conservancy infrastructure, to increase investment and promote application of agricultural science and technology, and to expand the planting area of high-yield crop or
species that adapted well to the climate warming. |
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