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机译:树死亡率应对干旱的密度交互显示增强的机会抗旱性
U.S. Geological Survey;
University of Nevada;
The Nature ConservancyUniversity of ArizonaUSDA Forest Service;
tree mortality; Competition; Pinus ponderosaforest dynamicsSoil moisturesoil water contentdroughtDrought resistancedry forestsFIA (Forest Inventory and Analysis)Climatebasal areahigh temperatureREDUCTION OF DENSITY;
机译:a Comprehensive study of agricultural Drought Resistance and Background Drought Levels in Five main Grain-producing Regions of China