[1]ZHANG Zhigao,GENG Yixin,CAI Maotang,et al.Spatial-Temporal Evolution and Trend Analysis of Climatic Potential Productivity in Henan Province During 1978-2017[J].Research of Soil and Water Conservation,2020,27(06):247-253.
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Spatial-Temporal Evolution and Trend Analysis of Climatic Potential Productivity in Henan Province During 1978-2017
Research of Soil and Water Conservation[ISSN 1005-3409/CN 61-1272/P] Volume:
27
Number of periods:
2020 06
Page number:
247-253
Column:
目次
Public date:
2020-10-20
- Title:
- Spatial-Temporal Evolution and Trend Analysis of Climatic Potential Productivity in Henan Province During 1978-2017
- Keywords:
- climatic potential productivity; Thornthwaite Memorial model; spatial-temporal evolution; Henan Province
- CLC:
- S162.5
- DOI:
- -
- Abstract:
- In order to explore the characteristics and future trends of climatic potential productivity in Henan Province in recent 40 years, based on daily temperature and precipitation meteorological data of 17 meteorological stations in Henan Province from 1978 to 2017, we calculated the temperature, precipitation and climatic potential productivity of Henan by using the Miami model and Thornthwaite Memorial model, analyzed and estimated the temporal and spatial variation characteristics and future trends of climatic potential productivity of Henan by using the methods of univariate linear regression, correlation analysis and R/S analysis. The results showed that:(1)during 1978—2017, the annual average temperature of Henan was 14.62℃, and the temperature showed the increasing trend with a rate of 0.34℃/decade; the annual average precipitation was 744.14 mm, and decreased at a rate of -2.51 mm/decade;(2)during the latest 40 years, the temperature and climatic potential productivity of Henan had kept increasing, with a tendency rates of 28.78 kg/(hm2·decade)and 10.80 kg/(hm2·decade), respectively; the precipitation potential productivity kept a downward trend at a rate of -2.29 kg/(hm2·decade);(3)from the perspective of spatial distribution, the temperature potential productivity slightly decreased from south to north, and from east to west; the precipitation and climatic potential productivity showed the decreasing trend from southeast to northwest;(4)the correlation analysis showed that the correlation coefficient of climatic potential productivity and precipitation in Henan was 0.956, and precipitation was the main limiting factor on climatic potential productivity;(5)R/S analysis showed that the average value of Hurst index of climatic potential productivity in Henan was 0.59, and the climatic potential productivity may continue to grow in the future. The climatic potential productivity of Henan was less affected by temperature and more affected by precipitation.
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Last Update:
2020-10-20