南方农业学报2018，Vol.49Issue(6)：1147-1155,9.DOI:10.3969/j.issn.2095-1191.2018.06.15
辽宁省农业界限温度时空变化特征及其对农业生态环境的影响
Temporal and spatial variations of agriculture critical temperatures in Liaoning Province and their impacts on agricultural eco-environment
摘要
Abstract
[Objective]This paper discussed the influence of agricultural critical temperature variation on agricultural production in the whole Liaoning Province under climate change background,which provided scientific basis for rational planning of agricultural production layout and full utilization of agricultural ecological resources to improve crop yield.[Method]Based on the current climate change featuring global warming,daily temperature data of 22 meteorological sta-tions in Liaoning Province from 1960 to 2014 were used. Supported by Matlab and ArcGIS technologies,the analysis was carried by focusing on the temporal and spatial variation characteristics of agricultural boundary temperature in Liaoning province,which covered beginning day,ending day,average duration days and accumulated temperature,as well as its influence on agricultural production.[Result]In terms of 10℃agricultural critical temperature in Liaoning,The climatic tendency rate of beginning day was-0.445 d/10 years,and the climate tendency rate of ending day was 1.757 d/10 years, and the climate tendency rate of average duration days was 2.202 d/10 years,and the temperature tendency rate of the ac-cumulate temperature was 53.73℃·d/10 years. The beginning day of agriculture critical temperatures shifted earlier while the ending day postponed,the duration days became longer and accumulate temperature gradually increased from 1960 to 2014 in Liaoning Province,the variation range was closely related to latitude and geographical location. As for the spatial changes,the beginning day of agricultural boundary temperature was postponed from southwest to northeast,and the en-ding day was postponed from northeast to southwest,accumulate temperature was descended from southwest to northeast.[Conclusion]In the future,the planting trend in Liaoning Province should be based on the mountainous hilly region of western Liaoning,and it should be extended to the central plain areas and the lowland and hilly areas of eastern Liaoning. In the agricultural production process,chemical fertilizers and pesticides should be reasonably used to promote the sus-tainable development of the agricultural ecological environment.关键词
农业界限温度/积温/时空变化/农业生态环境/辽宁省Key words
agricultural critical temperature/accumulate temperature/temporal and spatial variation/agriculture eco-environment/Liaoning Province分类
农业科技引用本文复制引用
张家悦,金思敏,刘明涵,李颖..辽宁省农业界限温度时空变化特征及其对农业生态环境的影响[J].南方农业学报,2018,49(6):1147-1155,9.基金项目
国家自然科学基金项目(51779114) （51779114）
辽宁省大学生创新创业计划项目(201710165000232) （201710165000232）
辽宁省教育厅科学技术研究项目(L201683677) （L201683677）
辽宁师范大学大学生创新创业计划项目(201710165000337) （201710165000337）
