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Metabolic rift

Marxist conception of capitalist ecological crisis

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Through Karl Marx, Soviet Union and Communist state

Foster, rather than Marx, coined the term "metabolic rift". Foster argues the theory develops from Marx's earlier work in the Economic and Philosophical Manuscripts on species-being and the relationship between humans and nature. Metabolism is Marx's "mature analysis of the alienation of nature" and presents "a more solid—and scientific—way in which to depict the complex, dynamic interchange between human beings and nature, resulting from human labor."

As opposed to those who have attributed to Marx a disregard for nature and responsibility for the environmental problems of the Soviet Union and other purportedly communist states, Foster sees in the theory of metabolic rift evidence of Marx's ecological perspective. The theory of metabolic rift "enabl[ed] [Marx] to develop a critique of environmental degradation that anticipated much of present-day ecological thought", including questions of sustainability as well as the limits of agricultural production using concentrated animal feeding operations. Researchers building on the original Marxist concept have developed other similar terms like carbon rift.

Origins

Soil exhaustion and agricultural revolutions

Marx's writings on metabolism were developed during England's "second" agricultural revolution (1815–1880), a period which was characterized by the development of soil chemistry and the growth of the use of chemical fertilizer. The depletion of soil fertility, or "soil exhaustion", had become a key concern for capitalist society, and demand for fertilizer was such that Britain and other powers initiated explicit policies for the importation of bone and guano, including raiding of Napoleonic battlefields and catacombs, British monopolization of Peruvian guano supplies, and, in the United States, "the imperial annexation of any islands thought to be rich in [guano]" through the Guano Islands Act (1856).

Liebig and soil science

Foster argues that Marx's theory drew heavily on contemporary advances in agricultural chemistry unknown to earlier classical economists such as Ricardo and Malthus. For them, different levels of soil fertility (and thus rent) was attributed "almost entirely to the natural or absolute productivity of the soil," with improvement (or degradation) playing only a minor role.

German agricultural chemist Justus von Liebig, in his Organic Chemistry in Its Applications to Agriculture and Physiology (1840), presented the first convincing explanation of the role of soil nutrients in the growth of plants. In 1842, Liebig expanded the use of the term metabolism (Stoffwechsel), from referring to material exchanges in the body, up to the biochemical processes of natural systems.

Foster argues that Liebig's work became more critical of capitalist agriculture as time went on. From the standpoint of nutrient cycling, the socio-economic relationship between rural and urban areas was self-evidently contradictory, hindering the possibility of sustainability:

If it were practicable to collect, with the least loss, all the solid and fluid excrements of the inhabitants of the town, and return to each farmer the portion arising from produce originally supplied by him to the town, the productiveness of the land might be maintained almost unimpaired for ages to come, and the existing store of mineral elements in every fertile field would be amply sufficient for the wants of increasing populations.

Human labor and nature

Marx rooted his theory of social-ecological metabolism in Liebig's analysis but connected it to his understanding of the labor process. Marx understood that, throughout history, it was through labor that humans appropriated nature to satisfy their needs. Thus the metabolism, or interaction, of society with nature is "a universal and perpetual condition."

In Capital, Marx integrated his materialist conception of nature with his materialist conception of history. Fertility, Marx argued, was not a natural quality of the soil, but was rather bound up with the social relations of the time. By conceptualizing the complex, interdependent processes of material exchange and regulatory actions that link human society with non-human nature as "metabolic relations," Marx allowed these processes to be both "nature-imposed conditions" and subject to human agency, a dynamic largely missed, according to Foster, by the reduction of ecological questions to issues of value.

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