摘要
采用500m×500m的小网格插值,推算了湖南省烟叶生长期内主要气候因子的小网格地域分布。参考第三次中国烟草种植区划指标,结合湖南烟草叶生长期内的气候资源及气象灾害特征,经过专家评分,选取了大田期降水量、大田期日照时数、成熟期降水量及成熟期连续5d最高气温≥35℃高温热害4个气候因子作为烟草种植区划指标。利用等级划分法和GIS小网格技术,进行了湖南省烟草气候生态适宜性区划。然后,将土地资源信息叠加到气候区划上,得到了既能满足气候需求又有耕地的实际可种植区域。区划结果表明,洞庭湖区为不适宜区,湘西、湘中、湘南的绝大部分地方的耕地均可种植烟叶,最适宜区主要集中在湖南的西部,其中怀化中南部和邵阳西南部是烟叶发展的最具潜力的区域。
By using 500 m × 500 m gridding insertion value, the regional distribution of climatic factors in Hunan Province during tobacco growth period was calculated, and, in reference with the Third National Tobacco Regionalization indices and the characteristics of climatic resources and meteorological disasters during tobacco growth period, four climatic factors including precipitation during tobacco growth, sunlight hours during tobacco growth, precipitation at tobacco maturing stage, and ≥35℃ high temperature damage in 5 consecutive days at tobacco maturing stage were chosen as the indices of tobacco-planting regionalization. By using grading method and GIS-gridding technology, the regionalization of the ecological suitability of climate conditions in tobacco-planting in this Province was conducted. After superposed land resources information on the climatic regionalization, the tobacco-planting areas which could both satisfy climatic demand and satisfy practically suitable farmland were determined. The results showed that Dongting Lake was not suitable for planting tobacco, while most parts of west, central and south Hunan Province would be the suitable regions. The most suitable regions were concentrated in west Hunan, and the central-south Huaihua and southwest Shaoyang had the greatest potential for tobacco-planting.
出处
《生态学杂志》
CAS
CSCD
北大核心
2008年第2期290-294,共5页
Chinese Journal of Ecology
基金
国家烟草专卖局资助项目(110200401020)
关键词
气候资源
高温热害
地理信息系统
土壤信息数据
种植区划
climatic resources
high temperature damage
GIS
soil information data
planting regionalization
作者简介
陆魁东，男，1962年生，高级工程师。主要从事作物生态气象与气象灾害评估研究。E—mail：lukuidong@163．com，通讯作者。
