Subtitle:

Geographia Polonica Vol. 82 No. 1 (2009)

Publisher:

IGiPZ PAN

Place of publishing:

Warszawa

Description:

24 cm

Type of object:

Journal/Article

Abstract:

An important source of risk in agricultural production is the variability to crop yields reflecting irregularly changing weather. This variability may be described as a stochastic process that has a function of density. Analyses of historical data on crop yields reveal that the function of density changed from right-skewed to left-skewed, along with increasing mean yields. All examined yields of crops cultivated recently in Poland demonstrate the left skew, which does not diminish with the aggregation of acreage. A fairly good approximation of the probability distribution for actual yields may be obtained using the log-normal distribution with an inverted abscissa.

References:

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Relation:

Geographia Polonica

Volume:

82

Issue:

1

Start page:

61

End page:

67

Detailed Resource Type:

Article

Format:

File size 1,4 MB ; application/pdf

Resource Identifier:

oai:rcin.org.pl:55501 ; 0016-7282 ; 10.7163/GPol.2009.1.5

Source:

CBGiOS. IGiPZ PAN, call nos.: Cz.2085, Cz.2173, Cz.2406 ; click here to follow the link

Language:

eng

Rights:

Rights Reserved - Free Access

Terms of use:

Copyright-protected material. May be used within the limits of statutory user freedoms

Digitizing institution:

Institute of Geography and Spatial Organization of the Polish Academy of Sciences

Original in:

Central Library of Geography and Environmental Protection. Institute of Geography and Spatial Organization PAS

Projects co-financed by:

European Union. European Regional Development Fund ; Programme Innovative Economy, 2010-2014, Priority Axis 2. R&D infrastructure

Access:

Open