کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
8970695 | 1552153 | 2005 | 15 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Variability in regional wheat yields as a function of climate, soil and economic variables: Assessing the risk of confounding
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کلمات کلیدی
موضوعات مرتبط
علوم زیستی و بیوفناوری
علوم کشاورزی و بیولوژیک
علوم زراعت و اصلاح نباتات
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Variability in regional wheat yields as a function of climate, soil and economic variables: Assessing the risk of confounding Variability in regional wheat yields as a function of climate, soil and economic variables: Assessing the risk of confounding](/preview/png/8970695.png)
چکیده انگلیسی
Soft wheat productivity could be described to a very satisfying level. High R2 values were obtained, partly due to aggregation of spatially autocorrelated in- and output data. High correlations were found between all variables, which indicates a risk of misinterpretation of results from statistical models when only few (groups of) variables are considered in the analysis. At a higher aggregation level (NUTS2) both the model fit and the risk of confounding increase. Validation by an independent dataset does not lead to exclusion of confounding. This paper serves as a basis for further research on spatial variability and trends in agricultural productivity at the regional scale, indicating both the possibilities and the risks of such research.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Agriculture, Ecosystems & Environment - Volume 110, Issues 3â4, 1 November 2005, Pages 195-209
Journal: Agriculture, Ecosystems & Environment - Volume 110, Issues 3â4, 1 November 2005, Pages 195-209
نویسندگان
Martha M. Bakker, Gerard Govers, Frank Ewert, Mark Rounsevell, Robert Jones,