JOURNAL OF NANJING FORESTRY UNIVERSITY ›› 2012, Vol. 36 ›› Issue (01): 48-52.doi: 10.3969/j.jssn.1000-2006.2012.01.010

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Longterm trends of heat factors in Xishuangbanna Tropical Botanical Garden

ZHAO Junbin1,2,5, ZHANG Yiping1,2,3*, SONG Fuqiang1,4, XU Zaifu1, XIAO Laiyun1   

  1. 1.Xishuangbanna Tropical Botanical Garden, CAS, Kunming 650223, China;2.Key Laboratory of Tropical Forest Ecology, Xishuangbanna Tropical Botanical Garden, CAS, Menglun 666303, China;3. Xishuangbanna Station for Tropical Rainforest Ecosystem Studies, Me
  • Online:2012-01-30 Published:2012-01-30

Abstract: In this study, we used the longterm data (1959-2008) of air temperature and soil surface temperature in Xishuangbanna Tropical Botanical Garden to investigate the interannual trends of the heat condition and discuss the influences on the tropical plants. The results showed that air temperature and soil temperature both exhibit an annual increasing rate of 0.013 and 0.007 ℃/a, respectively. The rates are lower than the average level in China. The interannual variation and extreme extent for air temperature and soil temperature both showed trends of decrease. As the temperature in Xishuangbanna is lower than other tropical regions near equator, the heat condition can definitely favor the tropical plants in the botanical garden. However, due to heat factor change, decreasing precipitation and other aspects might negatively affect the plants on growth and reproduction.

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