Science, 2 1 may 202 1, vol. 372, No.6544.

Science 202 1 May 21,Volume 372, No.6544.

Physics physics

Electrophotography reaches the atomic resolution limit set by lattice vibration.

Realization of atomic resolution limit specified by lattice vibration by electron stacking imaging

Authors: Zhen Chen, Jiang Yi, Shao Yuchun, David Muller, etc.

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The toolbox for synthesizing other non-benzene carbon allotropes is realized.

Climate and ecological climate &; ecology

The acceleration of global vegetation change rate in the past 18000 years

In the past 18000 years, the global vegetation change accelerated.

Authors: André Mortel, Suzette G.A. Frantua, Kuber P. Bata 1, John W. Williams, etc.

Link:

Through the increasing human pressure, it experienced the last melting of glaciers; However, little is known about the magnitude and pattern of vegetation change in the world. Using the compilation of 1 18 1 fossil pollen sequence and the newly developed statistical method, we found that from 4600 years ago to 2900 years ago, the speed of vegetation composition change around the world was increasing, which was unprecedented in the past 18000 years. The rate of change in the late Holocene is equal to or higher than the rate of glacier retreat in all continents, which indicates that the scale of human influence on terrestrial ecosystems even exceeds the climate-driven transformation in the last glacier retreat period. According to the ecological data of the last century, the accelerated change of biological universities began thousands of years ago.

Balance the protection priorities of nature and human beings in Europe

Key points of nature protection in Europe

Authors: Louise M.J.O 'Connor, Laura J. Pollock, Julien Renaud, Willem Verhagen, Peter H. Verburg, Sandra Lavorel, Luigi Maiorano, Wilfried Thuiller.

Link:

https://science.sciencemag.org/content/372/6544/856

abstract

Conservation scientists agree that protected areas should be expanded to protect biodiversity and ecosystem services, but it is often difficult to determine the priority of protected areas.

Considering the factors that promote the overall protection in Europe, the author's analysis includes (> 800) the species value represented by the species distribution of vertebrates; Landscape cultural value represented by natural tourism and other activities; And the value of ecosystem services such as carbon sink and flood control.

abstract

Conservation scientists agree that protected areas should be expanded to protect biodiversity and ecosystem services, but it is usually difficult to determine the priority of protected areas. Considering the factors that motivate the protection of the whole Europe, O 'Connor and others' analysis includes the value of species, with > 800 species of vertebrates; Cultural value of landscape represented by natural tourism and other activities; And the value of ecosystem services, such as carbon sequestration and flood control. Although these three main features are often inconsistent in the landscape, the author finds that paying attention to biodiversity in space protection planning is the most effective means to capture a series of natural values.