Exploring the formation and changes in tree microclimates can help improve the quality of urban green spaces.Temperature is an important indicator of microcli-mate,and tree temperature categories can be divided into a...Exploring the formation and changes in tree microclimates can help improve the quality of urban green spaces.Temperature is an important indicator of microcli-mate,and tree temperature categories can be divided into ambient temperature and tree surface temperature(T_(ts)),from which the mean radiation temperature(T_(mrt))and thermal comfort values are derived.In this study,the summer micro-climate of Ficus altissima in southern subtropical China was determined,focusing on soil(T_(s)),air(T_(a)),globe(T_(g)),and T_(ts).T_(mrt)and four commonly used thermal comfort indicators,i.e.,predicted mean vote(PMV),physiologically equivalent temperature(PET),standard effective temperature(SET^(*)),and universal thermal climate index(UTCI),were also cal-culated.The results showed that:(1)T_(mrt)can be used to explain both the cooling effect and to predict thermal com-fort in the shade;(2)the PET indicator is more advantageous for analyzing thermal comfort in the microclimate of Ficus altissima;(3)T_(s)is not a suitable important indicator for pre-dicting ambient temperatures and thermal comfort;and(4)the site-specific sampling method of the crowns or trunks can be used to accurately explain changes in the whole-plant thermal environment and thermal comfort,respectively.展开更多
Genus Pseudoalteromonas belongs to Family Pseudoalteromonadaceae in Gammaproteobacteria. A cold-adapted gram-negative bacterium, hydrocarbon-degrading Pseudoalteromonas sp. NJ289, was isolated from sea-ice of the Anta...Genus Pseudoalteromonas belongs to Family Pseudoalteromonadaceae in Gammaproteobacteria. A cold-adapted gram-negative bacterium, hydrocarbon-degrading Pseudoalteromonas sp. NJ289, was isolated from sea-ice of the Antarctica region, and sequenced the whole genome through the next generation sequencing platform. The assembly yielded three contigs representing two chromosomes and one plasmid with the sizes of 3.2 Mb, 636 kb and 1.8 kb, respectively. The G＋C contents of genome were 40.83% and included 3 589 ORFs. Functional annotation indicated some potential roles in enzymatic activity and environmental adaptability. This study may help for understanding the population diverse, evolutionary ecology and the microbial interaction.展开更多
文摘Exploring the formation and changes in tree microclimates can help improve the quality of urban green spaces.Temperature is an important indicator of microcli-mate,and tree temperature categories can be divided into ambient temperature and tree surface temperature(T_(ts)),from which the mean radiation temperature(T_(mrt))and thermal comfort values are derived.In this study,the summer micro-climate of Ficus altissima in southern subtropical China was determined,focusing on soil(T_(s)),air(T_(a)),globe(T_(g)),and T_(ts).T_(mrt)and four commonly used thermal comfort indicators,i.e.,predicted mean vote(PMV),physiologically equivalent temperature(PET),standard effective temperature(SET^(*)),and universal thermal climate index(UTCI),were also cal-culated.The results showed that:(1)T_(mrt)can be used to explain both the cooling effect and to predict thermal com-fort in the shade;(2)the PET indicator is more advantageous for analyzing thermal comfort in the microclimate of Ficus altissima;(3)T_(s)is not a suitable important indicator for pre-dicting ambient temperatures and thermal comfort;and(4)the site-specific sampling method of the crowns or trunks can be used to accurately explain changes in the whole-plant thermal environment and thermal comfort,respectively.
基金The National Natural Science Foundation of China under contract Nos 31200097,41576187,U1406402-5 and31202024the Basic Scientific Fund for National Public Research Institutes of China under contract Nos 2013G33 and 2015G10
文摘Genus Pseudoalteromonas belongs to Family Pseudoalteromonadaceae in Gammaproteobacteria. A cold-adapted gram-negative bacterium, hydrocarbon-degrading Pseudoalteromonas sp. NJ289, was isolated from sea-ice of the Antarctica region, and sequenced the whole genome through the next generation sequencing platform. The assembly yielded three contigs representing two chromosomes and one plasmid with the sizes of 3.2 Mb, 636 kb and 1.8 kb, respectively. The G＋C contents of genome were 40.83% and included 3 589 ORFs. Functional annotation indicated some potential roles in enzymatic activity and environmental adaptability. This study may help for understanding the population diverse, evolutionary ecology and the microbial interaction.
