GEOGRAPHY

Global temperature changes may have exceeded the tree’s suitable range


How biodiversity responds to climate change is of growing concern. In recent years, the team of Zhang Jian, a professor at the School of Ecology and Environmental Sciences of East China Normal University, and researchers from the University of British Columbia, the University of Alberta, wageningen University, Lanzhou University and Fujian Normal University in the Netherlands, have tested the population compensation effect (the trade-off between tree growth, death and reproduction) based on the monitoring samples of 81 tree species on the continental scale for more than 30 years, and found that the current temperature may have exceeded the temperature suitable range of these tree species.

This study is important in maintaining population stability and plant diversity at species distribution boundaries. Recently, the relevant research was published online in the Ecology Letters.

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The research team conducts monitoring work in the subtropical mountains Courtesy of the interviewee

To explore how plant diversity responds to climate change and whether plants can catch up with the rate of climate change, the research team has conducted a series of studies in recent years. On a transcontinental scale, based on Darwin’s 1856 correspondence with the famous American botanist Asa Gray, “Nothing surprised me more than the fauna similarity between East Asia and eastern North America, which is greater than the fauna similarity between east and west of North America.”

By integrating relevant research data, the researchers deeply analyzed the distribution data of 554 plant species in 52 intermittent distribution genera in East Asia-Eastern North America. The study found that these species with similar ecological niches at the genus level will face a completely different risk of extinction under future global changes, and the number and proportion of species at risk of extinction in East Asia are significantly higher than in eastern North America, indicating that current species habitat refuges do not guarantee that they will be protected from global change in the future.

“The population compensation effect is not universal in these 81 tree species, and even when population compensation occurs, it is difficult for tree species to effectively maintain boundary populations.” Zhang Jian said, “It was further found that the warmest lunar temperature is the main driver of the contraction of the species distribution range, indicating that the current temperature may have exceeded the suitable temperature range of these tree species, revealing the vulnerability of these tree species to climate change, which provides an important scientific basis for biodiversity conservation and management in the context of global change.” ”

The research team is currently conducting research on large-scale biodiversity and global change in China, based on altitude gradient biodiversity monitoring, to explore the inherent mechanism of plant response to climate change, as well as the interaction between plant diversity and other biological groups. (Source: China Science Daily, Zhang Shuanghu, Huang Xin)

Related paper information:https://doi.org/10.1111/ele.14028



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