Solar Terms
  Butterfly Survey

The 24 solar terms calendar was devised by the ancient Chinese to match natural phenomena, and combined observations from astronomy, meteorology, biometeorology (which covers relationships between weather and living things) and agricultural experiences. In the past, farmers used the 24 solar terms calendar to forecast weather and predict crop yields. In light of that, we commenced Hong Kong's first research on the relationship between solar terms and butterfly ecology at two butterfly hotspots: Shing Mun Country Park and Tai Po Kau Nature Reserve.

The research allows us to obtain long-term data on solar terms and local butterfly ecology, such as species, abundances and behavior. Thus, the result contributes to the analysis and investigation of local butterfly ecology.

The study in Shing Mun Country Park and Tai Po Kau Nature Reserve showed significant fluctuations in butterfly species and abundance according to different solar terms, and the data collected in the two survey locations showed very similar trends. Our findings indicated that there is a relationship between abundance of butterflies and solar terms. Based on data from the past 10 years, there are three solar terms each year in which the numbers of butterfly species and individual butterflies will markedly increase. These three solar terms are “vernal equinox” (20th or 21st March), “corn on ear” (5th or 6th June) and “winter commences” (7th or 8th November).

Moreover, during the investigation, we also discovered that Shing Mun was located on the path along which Danaid butterflies arrive at their winter roosts in Hong Kong - i.e. Shing Mun is one of the locations on their migration routes.

YEAR 2022/2023
YEAR 2021/2022
YEAR 2020/2021
YEAR 2019/2020
YEAR 2018/2019
YEAR 2017/2018
YEAR 2016/2017
YEAR 2015/2016
YEAR 2014/2015
YEAR 2013/2014
YEAR 2012/2013
YEAR 2011/2012
YEAR 2010/2011
YEAR 2009/2010
YEAR 2008/2009
YEAR 2007/2008
YEAR 2006/2007
YEAR 2005/2006

CONTACT US

3961 0200 (T)

2314 2661 (F)

butterfly@greenpower.org.hk

 

Rm. 2314, 23/F., Gala Place,

56 Dundas Street, Mongkok, Kln.