地理空间信息2024，Vol.22Issue(8)：50-53,71,5.DOI:10.3969/j.issn.1672-4623.2024.08.011
基于生境适宜性和水资源约束的宁夏稻改旱研究
Paddy Land-to-Dry Land Program of Ningxia Based on Ecological Environment Suitability and Water Resource Constraints
摘要
Abstract
We comprehensively screened land suitability evaluation factors for rice,wheat and spring maize from four aspects,such as climate conditions,terrain conditions,soil conditions and irrigation and drainage conditions.Then,we used the multi-indicator comprehensive evaluation method to calculate the land suitability of rice,wheat and spring maize.Finally,considering water resource constraints and the improvement ef-fect of rice on saline alkali cultivated land,we optimized the rice planting layout.The main research conclusions show that①the arable land suit-able for planting rice,wheat and spring maize accounted for 71.01%,80.81%and 38.85%of the respective planting areas.②Assuming that all the reduced rice is converted to corn,at least 1 005.23 km2 of rice need to be reduced,which can save 893 million m3 of water resources and meet the minimum water-saving requirements.If all the reduced rice is converted to wheat,the reduced rice area will be at least 1 129.47 km2.When the reduced area is between 1 005.23 km2 and 1 129.47 km2,the reduced rice must be partially converted to wheat and partially converted to corn.Regardless of the scenario,the more area converted to corn,the greatest amount of water resources saved.关键词
宁夏/稻改旱/土地适宜性评价/种植结构优化/水资源约束Key words
Ningxia/paddy land-to-dry land/land suitability evaluation/planting structure optimization/water resource restriction分类
天文与地球科学引用本文复制引用
王嘉宁,唐谊娟,眭颖菲,张露文,包玉斌,顾继升..基于生境适宜性和水资源约束的宁夏稻改旱研究[J].地理空间信息,2024,22(8):50-53,71,5.基金项目
宁夏自然科学基金资助项目(2022AAC03668). （2022AAC03668）
