Cover image: Experimental drought shelters located in a mixed grass-shrubland on the Colorado Plateau in southeastern Utah, USA. The shelters intercept 66% of ambient rainfall to create a seasonal drought in either the warm-season (May to October) or cool-season (November to April). Photograph by David Hoover. See related article by Hoover, Pfennigwerth, & Duniway pp 3280–3294.

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封面图片和问题信息

封面图片：位于美国犹他州东南部科罗拉多高原混合草丛中的试验性干旱避难所。避难所拦截了 66% 的环境降雨，从而在暖季（5 月至 10 月）或凉季（11 月至 4 月）造成季节性干旱。大卫·胡佛摄。请参阅 Hoover、Pfennigwerth 和 Duniway 的相关文章，第 3280-3294 页。