BEIJING, Sept. 23 (Xinhua) -- The following is a summary of published science and technology news of China.

AIR POLLUTION MONITORING

Chinese scientists have developed an integrated system to conduct comprehensive monitoring of air pollution in offshore areas, according to the Chinese Academy of Science (CAS).

The system is comprised of more than 30 monitoring devices including detection laser radar, in-situ detection sensor for carbon dioxide and aerosol particle spectrometer. It has been installed in the offshore area in Shenzhen, Guangdong Province for a one-month test. It will help obtain meteorological parameters and distribution characteristics of major pollutants in Shenzhen's offshore area.

GRAY WOLVES EVOLUTION

Chinese researchers have disclosed that gray wolves from the country's different regions derived from different lineages, according to a recent study paper published in the journal iScience.

Researchers from the Chinese Academy of Sciences (CAS) sequenced six specimens from wolf skins around the provinces of Zhejiang, Jiangxi, Guizhou, Heilongjiang and Jilin.

They found that the gray wolves from the first three provinces derived from a single lineage, distinct from those from the Qinghai-Tibet Plateau and northern regions.

GINKGO TREES EVOLUTION

Chinese scientists have revealed the evolutionary history of ginkgo trees, facilitating conservation and cultivation of the plant.

Scientists from the Institute of Botany under the Chinese Academy of Sciences, Zhejiang University and the Shenzhen-based BGI Genomics Institute re-sequenced 545 genomes of ginkgo trees sampled from 51 populations across the world. They identified three refugia in China that helped save ginkgo from extinction and detected multiple cycles of population expansion and reduction. Enditem

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