Based on data of temperature and precipitation in Benxi City from 1951 to 2010, variation characteristics and abrupt changes of the climate in Benxi City during recent 60 years were analyzed using linear trend and Man...Based on data of temperature and precipitation in Benxi City from 1951 to 2010, variation characteristics and abrupt changes of the climate in Benxi City during recent 60 years were analyzed using linear trend and Mann-Kendall method. The results showed that annual average tem- perature in Benxi City showed an upward trend in recent 60 years, with the linear tendency rate of 0.12 ℃/10 a; average temperature in each season also showed an increasing trend, and the increase was the greatest in winter, followed by spring, autumn and summer. Annual precipitation showed a decreasing trend, as well as average precipitation in summer, autumn and winter. According to the variation characteristics of temperature and precipitation in Benxi, the climate tended to be warming and drying over the past 60 years; the temperature and precipitation had significant periodic and seasonal variations.展开更多
Based on data of monthly pan evaporation,temperature,precipitation,sunshine hours,wind speed,relative humidity,etc. in Benxi County during 1958-2012 from Meteorological Bureau of Benxi County,annual,seasonal and month...Based on data of monthly pan evaporation,temperature,precipitation,sunshine hours,wind speed,relative humidity,etc. in Benxi County during 1958-2012 from Meteorological Bureau of Benxi County,annual,seasonal and monthly changes and impact factors of pan evaporation in Benxi County in recent 55 years were analyzed. The results showed that annual evaporation in Benxi County showed a decreasing trend from 1958 to 2012,with the linear tendency rate of-12. 18 mm/10 a. Except that evaporation in spring decreased obviously,but evaporation in other seasons increased slightly in recent 55 years. Moreover,evaporation changes correlated with changes of average temperature,daily range of temperature,precipitation,sunshine hours,average wind speed and relative humidity,but the correlations between evaporation and each meteorological element were different in various seasons.展开更多
Based on data of temperature and precipitation in Huanren County from 1953 to 2010, linear trend analysis and mutation detection of temperature and precipitation sequence were carried out using linear trend, Mann-Kend...Based on data of temperature and precipitation in Huanren County from 1953 to 2010, linear trend analysis and mutation detection of temperature and precipitation sequence were carried out using linear trend, Mann-Kendall detection and dryness of the de Martonne method. The results showed that during 1953-2010, annual average temperature, annual average maximum and minimum temperature in Huanren County showed an increasing trend; annual precipitation showed a decreasing trend; there was a downward trend in annual dryness. The mutation of annu- al average temperature, annual average maximum and minimum temperature appeared in 1978, 1987 and 1982 respectively; there was no mutation of annual precipitation and dryness. On the whole, the climate of Huanren County tended to be warm and dry over the past 58 years.展开更多
[Objective]The research aimed to study the response of plant climatic productivity to warming and drying tendency in Huanren in the past 58 years.[Method]Based on the temperature and precipitation data in Huanren from...[Objective]The research aimed to study the response of plant climatic productivity to warming and drying tendency in Huanren in the past 58 years.[Method]Based on the temperature and precipitation data in Huanren from 1953 to 2010,using trend analysis,Thornthwaite Memorial model and Mann-Kendall detection method,change characteristics of climate and plant climatic productivity in Huanren were analyzed,and the regression evaluation model between plant climatic productivity and temperature and precipitation was established.[Result]Annual average temperature in Huanren presented a significant upward trend,and its linear tendency rate was 0.29℃/10 a;annual precipitation presented a decreasing trend,and its linear tendency rate was-13.29 mm/10 a;dryness presented a declining trend.The warming and drying trend was obvious in Huanren.Plant climatic productivity presented a significant increasing trend,and its linear tendency rate was 8.39 g/（m2·10 a）.Plant climatic productivity was closely related to precipitation and temperature.[Conclusion]The research could provide basis and reference for the adjustment of agricultural structure and sufficiently playing the advantages of climate resources in Huanren.展开更多
基金Supported by the Project of Meteorological Bureau of Benxi City,China(BQ2010002)
文摘Based on data of temperature and precipitation in Benxi City from 1951 to 2010, variation characteristics and abrupt changes of the climate in Benxi City during recent 60 years were analyzed using linear trend and Mann-Kendall method. The results showed that annual average tem- perature in Benxi City showed an upward trend in recent 60 years, with the linear tendency rate of 0.12 ℃/10 a; average temperature in each season also showed an increasing trend, and the increase was the greatest in winter, followed by spring, autumn and summer. Annual precipitation showed a decreasing trend, as well as average precipitation in summer, autumn and winter. According to the variation characteristics of temperature and precipitation in Benxi, the climate tended to be warming and drying over the past 60 years; the temperature and precipitation had significant periodic and seasonal variations.
文摘Based on data of monthly pan evaporation,temperature,precipitation,sunshine hours,wind speed,relative humidity,etc. in Benxi County during 1958-2012 from Meteorological Bureau of Benxi County,annual,seasonal and monthly changes and impact factors of pan evaporation in Benxi County in recent 55 years were analyzed. The results showed that annual evaporation in Benxi County showed a decreasing trend from 1958 to 2012,with the linear tendency rate of-12. 18 mm/10 a. Except that evaporation in spring decreased obviously,but evaporation in other seasons increased slightly in recent 55 years. Moreover,evaporation changes correlated with changes of average temperature,daily range of temperature,precipitation,sunshine hours,average wind speed and relative humidity,but the correlations between evaporation and each meteorological element were different in various seasons.
基金Supported by the Project of Meteorological Bureau of Benxi City,China(BQ2010002)
文摘Based on data of temperature and precipitation in Huanren County from 1953 to 2010, linear trend analysis and mutation detection of temperature and precipitation sequence were carried out using linear trend, Mann-Kendall detection and dryness of the de Martonne method. The results showed that during 1953-2010, annual average temperature, annual average maximum and minimum temperature in Huanren County showed an increasing trend; annual precipitation showed a decreasing trend; there was a downward trend in annual dryness. The mutation of annu- al average temperature, annual average maximum and minimum temperature appeared in 1978, 1987 and 1982 respectively; there was no mutation of annual precipitation and dryness. On the whole, the climate of Huanren County tended to be warm and dry over the past 58 years.
基金Supported by the Item of Benxi Meteorological Bureau,China(BQ201002)
文摘[Objective]The research aimed to study the response of plant climatic productivity to warming and drying tendency in Huanren in the past 58 years.[Method]Based on the temperature and precipitation data in Huanren from 1953 to 2010,using trend analysis,Thornthwaite Memorial model and Mann-Kendall detection method,change characteristics of climate and plant climatic productivity in Huanren were analyzed,and the regression evaluation model between plant climatic productivity and temperature and precipitation was established.[Result]Annual average temperature in Huanren presented a significant upward trend,and its linear tendency rate was 0.29℃/10 a;annual precipitation presented a decreasing trend,and its linear tendency rate was-13.29 mm/10 a;dryness presented a declining trend.The warming and drying trend was obvious in Huanren.Plant climatic productivity presented a significant increasing trend,and its linear tendency rate was 8.39 g/（m2·10 a）.Plant climatic productivity was closely related to precipitation and temperature.[Conclusion]The research could provide basis and reference for the adjustment of agricultural structure and sufficiently playing the advantages of climate resources in Huanren.
