祁连山青海云杉物候表型的空间分异及其内在机制
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Spatial variability of phenological phenotype of Picea crassifolia in Qilian Mountains and its internal mechanism
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图3. 不同海拔带季前热量与低温积累。Tb, 基温。 |
Fig. 3. Pre-season heat and chilling accumulations at different altitudes. Tb, base temperature. |
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