نتایج جستجو برای: climatic factors

تعداد نتایج: 1102923  

2017
Haibo Chu Jiahua Wei Jiaye Li Zhen Qiao

Mediumand long-term runoff forecasting is essential for hydropower generation and water resources coordinated regulation in the Yellow River headwaters region. Climate change has a great impact on runoff within basins, and incorporating different climate information into runoff forecasting can assist in creating longer lead-times in planning periods. In this paper, a multimodel approach was dev...

Journal: :Science 2003
Ramakrishna R Nemani Charles D Keeling Hirofumi Hashimoto William M Jolly Stephen C Piper Compton J Tucker Ranga B Myneni Steven W Running

Recent climatic changes have enhanced plant growth in northern mid-latitudes and high latitudes. However, a comprehensive analysis of the impact of global climatic changes on vegetation productivity has not before been expressed in the context of variable limiting factors to plant growth. We present a global investigation of vegetation responses to climatic changes by analyzing 18 years (1982 t...

2016
Xiaolin Li Xiaotao Zhang Jun Niu Ling Tong Shaozhong Kang Taisheng Du Sien Li Risheng Ding

Quantifying the influence of driving factors on irrigation water productivity (IWP) is vital for efficient agricultural water use. This study analyzed contributions of agronomic practice and climatic factors to the changes of IWP, based on the data from 1981 to 2012 in Hexi Corridor, Northwest China. Cobb-Douglas production functions were developed by the partial least squares method and contri...

2018

Numerous of studies estimate the influence of climatic factors on food-grain crops as a proxy for integrated food security in different regions of India, conclude that climate change has a significant and negative impact on food security in India [13]. Few studies used agricultural productivity of food-grain and commercial crops to assess the climatic change impact on agricultural productivity ...

2016
Nikolaos I. Stilianakis Vasileios Syrris Thomas Petroliagkis Peeter Pärt Sandra Gewehr Stella Kalaitzopoulou Spiros Mourelatos Agoritsa Baka Danai Pervanidou John Vontas Christos Hadjichristodoulou

Climate can affect the geographic and seasonal patterns of vector-borne disease incidence such as West Nile Virus (WNV) infections. We explore the association between climatic factors and the occurrence of West Nile fever (WNF) or West Nile neuro-invasive disease (WNND) in humans in Northern Greece over the years 2010-2014. Time series over a period of 30 years (1979-2008) of climatic data of a...

2006
Eugene A. Vaganov Irina V. sviderskaya Alexander V. shashkin

Variations in tree-ring structure are simulated with (1) an empirical model using monthly climatic data as statistical predictors and (2) a mechanisbc model using daily climatic data as growth limiting conditions. The empirical model calibrates standardized ring-width and density chronologies of tree-rings with monthly temperature, precipitation or Palmer Drought Severity Index. The empirical m...

2015
Ravi Chandra Pavan Kumar Srimath-Tirumula-Peddinti Nageswara Rao Reddy Neelapu Naresh Sidagam Lalit Kumar

BACKGROUND Malarial incidence, severity, dynamics and distribution of malaria are strongly determined by climatic factors, i.e., temperature, precipitation, and relative humidity. The objectives of the current study were to analyse and model the relationships among climate, vector and malaria disease in district of Visakhapatnam, India to understand malaria transmission mechanism (MTM). METHO...

2015
Darren J. Kriticos Sarah Brunel Noboru Ota Guillaume Fried Alfons G. J. M. Oude Lansink F. Dane Panetta T. V. Ramachandra Prasad Asad Shabbir Tuvia Yaacoby Ben Bond-Lamberty

Pest Risk Assessments (PRAs) routinely employ climatic niche models to identify endangered areas. Typically, these models consider only climatic factors, ignoring the 'Swiss Cheese' nature of species ranges due to the interplay of climatic and habitat factors. As part of a PRA conducted for the European and Mediterranean Plant Protection Organization, we developed a climatic niche model for Par...

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