This paper reviews studies on the major ecosystem services provided by urban forests in China. Several critical issues could be identified from this review of the identification and assessment of ecosystem services generated by urban forests in China.
Elsevier,

General and Comparative Endocrinology, Volume 157, July 2008

All organisms respond to environmental cues that allow them to organize the timing and duration of life history stages that make up their life cycles. Superimposed on this predictable life cycle are unpredictable events that have the potential to be stressful. Environmental and social stresses have deleterious effects on life history stages such as migration, reproductive function and molt in vertebrates. Global climate change, human disturbance and endocrine disruption from pollutants are increasingly likely to pose additional stresses that could have a major impact on organisms.

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