退耕对粮食生产灾情的间接影响分析--以甘肃省定西市安定区为例  

Indirect effect of returning farmland to forest on disaster situation of grain-production: a case study on Anding District of Dingxi City

作　　者：吴吉东[1] 李宁[1] 牛定炜[2] 张明军[2] 黄树青[1] 张鹏[1] 

机构地区：[1]北京师范大学环境演变与自然灾害教育部重点实验室 [2]西北师范大学地理与环境科学学院,甘肃兰州730070

出　　处：《自然灾害学报》2008年第2期8-12,共5页Journal of Natural Disasters

基　　金：国家自然科学重点基金资助项目(40335048,40535024);北京市自然科学基金资助项目(8062020)

摘　　要：退耕还林政策的实施为农业产业结构的调整提供了契机。通过实地调查走访及对气候和农业自然灾情的了解，采取定性与定量相结合的方法对研究区退耕前后气候背景、自然灾害发生和粮食生产的状况进行统计分析。结果表明：退耕促进了农业产业结构的调整和土地利用的优化，提高了农业生产系统总体的抗灾能力，特别是对缓解成灾率为3-5成的那部分粮食作物的受灾有较大的作用。The implementation of returning farmland to forest provided a new chance for the adjustment of agricultural production structure. Based on field investigation and statistical data of climatic a.d agricultural natural disaster, this article takes Anding District of central semi-arid area in Gansu Province for an example to analyze the influence of returning farmland to forest on the disaster situation of grain-production in such respects as the change of regional climate,agricultural natural disaster and pattern of fanning,etc. , Result shows that returning farmland to forest had promoted agricultural industrial structure adjustment and optimized the land use, it has positive effect on avoiding and reducing disasters to grain-production, especially to the part of grain production with light disaster suffering area rate.

关 键 词：退耕 粮食生产 农业自然灾害 灾情 

分 类 号：S42[农业科学—植物保护]