Atmospheric variables as driving variables of agricultural and forest ecosystems
نویسندگان
چکیده
منابع مشابه
Using crown condition variables as indicators of forest health
Indicators of forest health used in previous studies have focused on crown variables analyzed individually at the tree level by summarizing over all species. This approach has the virtue of simplicity but does not account for the three-dimensional attributes of a tree crown, the multivariate nature of the crown variables, or variability among species. To alleviate these difficulties, we define ...
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A new set of averaging rules is put forward that exactly determines the means of air temperature, mixing ratio, and velocity by incorporating weighting factors in accordance with physical conservation laws. For the temperature and velocity, respectively, the means calculated according to these rules are shown to be in accordance with the gas law and the most fundamental definition from classica...
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Atmospheric CO(2) is rising rapidly, and options for slowing the CO(2) rise are politically charged as they largely require reductions in industrial CO(2) emissions for most developed countries. As forests cover some 43% of the Earth's surface, account for some 70% of terrestrial net primary production (NPP), and are being bartered for carbon mitigation, it is critically important that we conti...
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ژورنال
عنوان ژورنال: Italian Journal of Agronomy
سال: 2008
ISSN: 2039-6805,1125-4718
DOI: 10.4081/ija.2008.1s.9