Analysis of Agricultural Climate Resources in Nandan County under Climate Change Secular
The agricultural climate resources in Nandan County from 1970 to 2022 was analyzed,focusing on the spatiotemporal distribution characteristics and variation trends of light resources,heat resources,and water resources.The results showed that the annual average sunshine duration in Nandan County was 1 257.3 h,with an annual sunshine percentage of 28.7％.The sunshine duration during the growing season(April to October)accounted for 70.6％of the annual sunshine duration,which was beneficial for photosynthesis and organic matter accumulation in crops.Although the annual sunshine duration in Nandan showed an increasing trend,it was still lower than the national and Guangxi provincial averages,indicating a relative scarcity of light resource.The annual average temperature was 17.3 ℃,with 317.4 frost-free days,and the active accumulated temperature above 10℃ was 5 851.7℃·d,all showing significant increasing trends.The multi-year average precipitation was 1 469.7 mm,and the spatial distribution of precipitation was becoming increasingly extreme.The precipitation during the crop growing season(April to September)accounted for 80.3％of the annual precipitation.Precipitation in summer and winter showed an increasing trend,while precipitation in spring and autumn did not contribute to the annual increase.In response to these changes,strategies such as adjusting the agricultural structure,developing facility agriculture,and rationally developing and utilizing water resources were proposed to improve the efficiency and quality of agricultural production,enhance the adaptability and resilience of the agricultural ecosystem,ensure food production safety,and promote the modernization of agriculture.
万方数据
维普
