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- W4306808648 abstract "Many aspects of anthropogenic global change, such as land cover change, biodiversity loss and the intensification of agricultural production, threaten the natural biosphere. These aspects seem somewhat disjunct and specific so that it is hard to obtain a bigger picture of what these changes imply and to distinguish beneficial from detrimental human impacts. Here I describe a holistic approach that provides such a bigger picture and use it to understand how the terrestrial biosphere can be sustained in the presence of increased human activities. This approach focuses on the free energy generated by photosynthesis, energy needed to sustain either the dissipative metabolic activity of ecosystems or human activities, with the generation rate being set by the physical constraints of the environment. We can then distinguish two kinds of human impacts on the biosphere: detrimental effects caused by enhanced human consumption of this free energy, and empowering effects that allow for more photosynthetic activity and therefore more dissipative activity of the biosphere. I use examples from the terrestrial biosphere to illustrate this view as well as global datasets to show how this can be estimated. I then discuss how certain aspects of human-made technology can act to enhance the free energy generation of the terrestrial biosphere, which can then facilitate sustaining the biosphere in times at which human activity increasingly shapes the functioning of the Earth system." @default.
- W4306808648 created "2022-10-20" @default.
- W4306808648 creator A5022224624 @default.
- W4306808648 date "2022-10-17" @default.
- W4306808648 modified "2023-09-29" @default.
- W4306808648 title "How to sustain the terrestrial biosphere in the Anthropocene? A thermodynamic Earth system perspective" @default.
- W4306808648 doi "https://doi.org/10.48550/arxiv.2210.09164" @default.
- W4306808648 hasPublicationYear "2022" @default.
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