Future soil moisture and temperature extremes imply expanding suitability for rainfed agriculture in temperate drylands
Scientific Reports
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Abstract
The distribution of rainfed agriculture is expected to respond to climate change and human population growth. However, conditions that support rainfed agriculture are driven by interactions among climate, including climate extremes, and soil moisture availability that have not been well defined. In the temperate regions that support much of the world’s agriculture, these interactions are complicated by seasonal temperature fluctuations that can decouple climate and soil moisture. Here, we show that suitability to support rainfed agriculture can be effectively represented by the interactive effects of just two variables: suitability increases where warm conditions occur with wet soil, and suitability decreases with extreme high temperatures. 21st century projections based on ecohydrological modeling of downscaled climate forecasts imply geographic shifts and overall increases in the area suitable for rainfed agriculture in temperate regions, especially at high latitudes, and pronounced, albeit less widespread, declines in suitable areas in low latitude drylands, especially in Europe. These results quantify the integrative direct and indirect impact of rising temperatures on rainfed agriculture.
Suggested Citation
Bradford, J.B., Schlaepfer, D., Lauenroth, W.K., Yackulic, C.B., Duniway, M.C., Hall, S.A., Jia, G., Jamiyansharav, K., Munson, S.M., Wilson, S.D., Tietjen, B., 2017, Future soil moisture and temperature extremes imply expanding suitability for rainfed agriculture in temperate drylands: Scientific Reports, v. 7, 12923; 11 p., https://doi.org/10.1038/s41598-017-13165-x.
| Publication type | Article |
|---|---|
| Publication Subtype | Journal Article |
| Title | Future soil moisture and temperature extremes imply expanding suitability for rainfed agriculture in temperate drylands |
| Series title | Scientific Reports |
| DOI | 10.1038/s41598-017-13165-x |
| Volume | 7 |
| Publication Date | October 10, 2017 |
| Year Published | 2017 |
| Language | English |
| Publisher | MacMillan Publishers |
| Contributing office(s) | Southwest Biological Science Center, John Wesley Powell Center for Analysis and Synthesis |
| Description | 12923; 11 p. |