| The high\|precision regionalization index model of characteristic agriculture based on light, heat and land resource |
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| DOI：10.7606/j.issn.1000-7601.2021.04.23 |
| Key Words: light and heat resource characteristic agriculture suitability zoning evaluation index of zoning high\|precision regionalization index Chinese pickly ash |
| Author Name | Affiliation | | MA Guanhua | College of Water Resources and Architectural Engineering, Northwest A & F University, Yangling, Shaanxi 712100, China | | WANG Shuangyin | College of Water Resources and Architectural Engineering, Northwest A & F University, Yangling, Shaanxi 712100, China | | WANG Zhengzhong | College of Water Resources and Architectural Engineering, Northwest A & F University, Yangling, Shaanxi 712100, China
Key Laboratory of Agriculture Soil and Water Engineering in Arid and Semiarid Areas, Ministry of Education, Northwest A & F University, Yangling, Shaanxi 712100, China |
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| Abstract: |
| The characteristic agriculture of Hancheng, Shaanxi Province — Chinese prickly ash planting was taken as an example, and we selected six evaluation indices which covered light, heat and land resources for the growth of characteristic crops, such as annual solar radiation, sunshine duration, perennial average daily temperature, accumulated value of temperature ≥10℃, slope and aspect. According to the meteorological data and DEM of 10 meteorological stations around Hancheng, we used multiple regression analysis, spatial interpolation, terrain factor correction, quantitative classification of indices and other methods to construct the high\|precision spatial distribution model of each index. After that, the entropy weight method was used to construct the high\|precision agricultural regionalization index model, and then we created suitability zoning map for Chinese prickly ash planting in Hancheng. The model application results showed that the best areas for prickly ash cultivation were located in the river valley plateau along the Yellow River in the east of Hancheng where the land was flat and full of light and heat, allowing the prickly ash cultivation to be part of planning of characteristic agriculture and urban development. The suitable areas were distributed in the western hills with a good foundation for characteristic agriculture, and stereoscopic planting can be combined to promote the industrialization of characteristic agriculture. The unsuitable areas were distributed in the remote mountains with poor photothermal and topographic conditions. The results suggest that forestry and sightseeing agriculture should be developed in these areas in order to pursue a balance between utilization of resources and function of ecological protection. |
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