Paul Ganguin was a French representative of impressionism painting in 19th Century. With geist way, he formed his own art aesthetics through observation and explanation of nature.
Based on the observation of representative plant of landscape in Bijiashan Park, plant phenologies was noted and confirmed, and vegetation landscape effect was studied.
对主要景观代表植物物候特征进行观察，确定植物物候变化，探讨对植被景观的影响。
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The longitudinal observation on changes of psychological well-being in a representative sample of the elderly living in Beijing was reported here.