In his classic essay, "The Land Ethic," published posthumously in
A Sand County Almanac (1949), Leopold proposes that the next step in the evolution of ethics is the expansion of ethics to include nonhuman members of the
biotic community, collectively referred to as "the land." Leopold states the basic principle of his land ethic as: "A thing is right when it tends to preserve the integrity, stability, and beauty of the biotic community. It is wrong when it tends otherwise." He also describes it in this way: "The land ethic simply enlarges the boundaries of the community to include soils, waters, plants, and animals, or collectively: the land . . . [A] land ethic changes the role of
Homo sapiens from conqueror of the land community to plain member and citizen of it. It implies respect for his fellow-members, and also respect for the community as such." Leopold was a naturalist, not a philosopher. There is much scholarly debate about what exactly Leopold's land ethic asserts and how he argues for it. At its core, the land ethics claims (1) that humans should view themselves as plain members and citizens of biotic communities, not as "conquerors" of the land; (2) that we should extend ethical consideration to ecological wholes ("soils, waters, plants, and animals"), (3) that our primary ethical concern should not be with individual plants or animals, but with the healthy functioning of whole biotic communities, and (4) that the "summary moral maxim" of ecological ethics is that we should seek to preserve the integrity, stability, and beauty of the biotic community. Beyond this, scholars disagree about the extent to which Leopold rejected traditional human-centered approaches to the environment and how literally he intended his basic moral maxim to be applied. They also debate whether Leopold based his land ethic primarily on human-centered interests, as many passages in
A Sand County Almanac suggest, or whether he placed significant weight on the intrinsic value of nature. One prominent student of Leopold,
J. Baird Callicott, has suggested that Leopold grounded his land ethics on various scientific claims, including a Darwinian view of ethics as rooted in special affections for kith and kin, a
Copernican view of humans as plain members of nature and the cosmos, and the finding of modern ecology that ecosystems are complex, interrelated wholes. However, this interpretation has recently been challenged by
Roberta Millstein, who has offered evidence that Darwin's influence on Leopold was not related to Darwin's views about moral sentiments, but rather to Darwin's views about interdependence in the struggle for existence.
Attractions of Leopold's land ethic Leopold's ecocentric land ethic is popular today with mainstream environmentalists for a number of reasons. Unlike more radical environmental approaches, such as
deep ecology or
biocentrism, it does not require huge sacrifices of human interests. Leopold does not, for example, believe that humans should stop eating or hunting, or experimenting on animals. Nor does he call for a massive reduction in the human population, or for permitting humans to interfere with nature only to satisfy vital human needs (regardless of economic or other human costs). As an environmental ethic, Leopold's land ethic is a comparatively moderate view that seeks to strike a balance between human interests and a healthy and biotically diverse natural environment. Many of the things mainstream environmentalists favor—preference for native plants and animals over invasive species, hunting or selective culling to control overpopulated species that are damaging to the environment, and a focus on preserving healthy, self-regenerating natural ecosystems both for human benefit and for their own intrinsic value—jibe with Leopold's ecocentric land ethic. A related understanding has been framed as global land as a commons. In this view biodiversity and terrestrial carbon storage - an element of
climate change mitigation - are global public goods. Hence, land should be governed on a global scale as a commons, requiring increased international cooperation on nature preservation.
Criticism Some critics fault Leopold for lack of clarity in spelling out exactly what the land ethic is and its specific implications for how humans should think about the environment. It is clear that Leopold did not intend his basic normative principle ("A thing is right when it tends to preserve the integrity, stability, and beauty of the biotic community") to be regarded as an ethical absolute. Thus construed, it would prohibit clearing land to build homes, schools, or farms, and generally require a "hands-off" approach to nature that Leopold plainly did not favor. Presumably, therefore, his maxim should be seen as a general guideline for valuing natural ecosystems and striving to achieve what he terms a sustainable state of "harmony between men and land." But this is vague and, according to some critics, not terribly helpful. A second common criticism of Leopold is that he fails to state clearly why we should adopt the land ethic. He often cites examples of environmental damage (e.g., soil erosion, pollution, and deforestation) that result from traditional human-centered, "conqueror" attitudes towards nature. But it is unclear why such examples support the land ethic specifically, as opposed to biocentrism or some other nature-friendly environmental ethic. Leopold also frequently appeals to modern ecology, evolutionary theory, and other scientific discoveries to support his land ethic. Some critics have suggested that such appeals may involve an illicit move from facts to values. According to these critics, we rightly reject such holistic approaches in human affairs. Why, they ask, should we adopt them in our treatment of non-human animals? Finally, some critics have questioned whether Leopold's land ethic might require unacceptable interferences with nature in order to protect current, but transient, ecological balances. If the fundamental environmental imperative is to
preserve the integrity and stability of natural ecosystems, wouldn't this require frequent and costly human interventions to prevent naturally occurring changes to natural environments? In nature, the "stability and integrity" of ecosystems are disrupted or destroyed all the time by drought, fire, storms, pests, newly invasive predators, etc. Must humans act to prevent such ecological changes, and if so, at what cost? Why should we place such high value on current ecological balances? Why think it is our role to be nature's steward or policeman? According to these critics, Leopold's stress on preserving existing ecological balances is overly human-centered and fails to treat nature with the respect it deserves. ==See also==