Analysis of Climatic Characteristics of “24 Solar Terms” in Qujiang in Recent 30 Years

2020 ◽  
Vol 09 (05) ◽  
pp. 477-486
Author(s):  
万春 杨
Keyword(s):  
Climatic Characteristics ◽  
Solar Terms

scholarly journals CLIMATIC CHARACTERISTICS OF SALT LAKE CITY.

JAMA ◽  
1889 ◽  
Vol XIII (25) ◽  
pp. 873
Author(s):  
F. S. BASCOM
Keyword(s):  
Salt Lake ◽  
Salt Lake City ◽  
Lake City ◽  
Climatic Characteristics

scholarly journals Ivory Glacier, New Zealand, an I.H.D. Representative Basin Study

1978 ◽  
Vol 20 (82) ◽  
pp. 67-84 ◽  
Author(s):  
P.W. Anderton ◽  
T.J. Chinn
Keyword(s):  
New Zealand ◽  
Energy Balance ◽  
Mass Balance ◽  
Heat Content ◽  
Run Off ◽  
Regional Trends ◽  
High Precipitation ◽  
Energy Balances ◽  
Climatic Characteristics ◽  
Maritime Environment

AbstractMass, water, and energy balances were measured lit the Ivory Glacier, South Island, New Zealand from 1969 to 1975 as part of an I.H.D. programme of representative basin studies. Ivory Glacier is a small cirque glacier within the high-precipitation maritime environment of Westland and was chosen initially for convenience of study rather than representativeness. Mass-balance investigations included a detailed study of the sampling efficiency of a pole network. Annual mass balance was consistently negative during the study period. The run-off pattern was dominated by rain. The estimated annual mean precipitation is 9630 mm for 1971-75. Snow represents about 25% of annual precipitation. Melt contributed 21% of run-off including 9% contributed by melt of perennial snow and ice. The relative contributions of different fluxes to the energy balance during summer are: net radiation 52%, sensible heat 29%, and latent heat 17%. Heat content of precipitation contributes significantly to the energy balance during individual rain-storms and is probably significant during periods of high precipitation in spring and autumn. Climatic characteristics and behaviour of Ivory Glacier appear to follow regional trends in the Southern Alps and the glacier is considered to be reasonably representative.

Climatic characteristics of heat waves and their simulation in plant experiments

2010 ◽  
Vol 16 (7) ◽  
pp. 1992-2000 ◽  
Author(s):  
HANS J. DE BOECK ◽  
FREJA E. DREESEN ◽  
IVAN A. JANSSENS ◽  
IVAN NIJS
Keyword(s):  
Heat Waves ◽  
Climatic Characteristics

scholarly journals Higher temperatures and lower annual rainfall do not restrict, directly or indirectly, the mycorrhizal colonization of barley (Hordeum vulgare L.) under rainfed conditions

PLoS ONE ◽  
2020 ◽  
Vol 15 (11) ◽  
pp. e0241794
Author(s):  
Maroua Jerbi ◽  
Sonia Labidi ◽  
Anissa Lounès-Hadj Sahraoui ◽  
Hatem Chaar ◽  
Faysal Ben Jeddi
Keyword(s):  
Hordeum Vulgare ◽  
Environmental Factors ◽  
Soil Properties ◽  
Root Colonization ◽  
Partial Least Square ◽  
Least Square ◽  
Annual Rainfall ◽  
Available Phosphorus ◽  
Chemical Soil ◽  
Climatic Characteristics

Whereas the role of arbuscular mycorrhizal fungi (AMF) in plant growth improvement has been well described in agroecosystems, little is known about the effect of environmental factors on AMF root colonization status of barley, the fourth most important cereal crop all over the world. In order to understand the influence of environmental factors, such as climatic and soil physico-chemical properties, on the spontaneous mycorrhizal ability of barley (Hordeum vulgare L.), a field investigation was conducted in 31 different sites in sub-humid, upper and middle semi-arid areas of Northern Tunisia. Mycorrhizal root colonization of H. vulgare varied considerably among sites. Principal component analysis showed that barley mycorrhization is influenced by both climatic and edaphic factors. A partial least square structural equation modelling (PLS-SEM) revealed that 39% (R²) of the total variation in AMF mycorrhizal rate of barley roots was mainly explained by chemical soil properties and climatic characteristics. Whereas barley root mycorrhizal rates were inversely correlated with soil organic nitrogen (ON), available phosphorus amounts (P), altitude (Z), average annual rainfall (AAR), they were directly correlated with soil pH and temperature. Our results indicated that AMF root colonization of barley was strongly related to climatic characteristics than chemical soil properties. The current study highlights the importance of the PLS-SEM to understand the interactions between climate, soil properties and AMF symbiosis of barley in field conditions.

scholarly journals Fuzzy logic device for crop analysing, modeling and forecasting in the Kabardino-Balkarian Republic

2020 ◽  
Vol 15 (2) ◽  
pp. 123-133
Author(s):  
Ruslan M. Bischokov
Keyword(s):  
Meteorological Parameters ◽  
Crop Yields ◽  
Climatic Factors ◽  
Crop Productivity ◽  
Logic Device ◽  
Modeling And Forecasting ◽  
Expected Values ◽  
Predicted Values ◽  
Climatic Characteristics

Using computer fuzzy-logical models based on empirical values of climatic characteristics (rainfall, temperature and humidity) of long-term observations (1955-2018) from meteorological stations in the Kabardino-Balkarian Republic (Nalchik, Baksan, Prokhladny and Terek) and crop yields (winter wheat, spring wheat, corn, sunflower, millet, oats), dependence of crop yields on variations of climatic factors were analyzed and a specific forecast was given. Setting expected values of climatic characteristics in computer model, we received possible values of productivity for the next season. Uniformity assessment (Dixon and Smirnov - Grabbsas criterion), stability (Student and Fischers criterion), statistical importance of parameters of distribution and accidental errors were determined. Originality of the method is in the fact that in the form of input parameters of the model predictors, the previously calculated forecast values of the meteorological parameters for the next agricultural year were used, and at the output, the predicted values of crop productivity were obtained as predictants. Furthermore, recommendations on adoption of management decisions were developed.

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