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| Author: | Makowski, D. (et al.) |
| Title: | Measuring the accuracy of agro-environmental indicators |
| Journal: | Journal of Environmental Management
2009 : MAY, VOL. 90:suppl.2, p. 139-146 |
| Index terms: | decision support systems risk sensitivity analysis |
| Freeterms: | bird nitrogen sclerotinia sclerotiorum specificity weed |
| Language: | eng |
| Abstract: | In the article, four series of indicators were considered in this paper: indicators of habitat quality for grassland bird species, indicators of risk of disease in oilseed rape crops, indicators of risk of pollution by nitrogen fertilizer, and indicators of weed infestation. Several datasets were used to measure their accuracy in cultivated plots and in grasslands. The sensitivity, specificity, and probability of correctly ranking plots were estimated for each indicator. The results showed that the indicators had widely varying levels of accuracy. Some show very poor performance and had no discriminatory ability. Other indicators were informative and performed better than random decisions. Among the tested indicators, the best ones were those using information on plant characteristics such as grass height, fraction of diseased flowers, or crop yield. The statistical method applied in this paper could support researchers, farm advisers, and decision makers in comparing various indicators. |
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