Policy Guide on Planning for SustainabilityAdopted by Chapter Delegate Assembly, April 16, 2000 I. FindingsThere is growing concern for the issue of sustainability — whether the Earth's resources will be able to meet the demands of a growing human population that has rising aspirations for consumption and quality of life, while maintaining the rich diversity of the natural environment or biosphere. Patterns of human development — physical, social, and economic — affect sustainability at the local and the global level. City and regional planning is integrally related to defining how, where, and when human development occurs, which affects resource use. Planners can therefore play a crucial role in improving the sustainability of communities and the resources that support them. There are several dimensions to the "sustainability" issue:
A sustainable community is one that is consistent with all of these dimensions of sustainability. A range of indicators suggest that there is a growing gap between human consumption of resources and Earth's capacity to supply those resources and reabsorb resulting wastes. Several of these are described below: Global Indications of UnsustainabilityGlobal Warming. Human activity, particularly the combustion of fossil fuels, adds gases like carbon dioxide and methane to the atmosphere. The world's scientific community continues to document that this buildup of gases is altering global climatic patterns. Over the past century, the land surface temperature worldwide has risen an average of 0.8 -1.0 Fahrenheit degrees. Over the same period, average precipitation has increased about 1% while the worldwide sea level has risen about 6-8 inches. Soil Degradation. For the past 50 years, agricultural mismanagement has resulted in severe degradation of the Earth's soils, erosion being the most common type of degradation. Soil lost to wind and water erosion ranges from 5-10 tons per hectare annually in Africa, Europe, and Australia, 10-20 tons per hectare in North, Central, and South America, and 30 tons per hectare in Asia. Given that soil is created at roughly one ton per hectare per year, current rates of erosion are depleting the nutrient base of agriculture. Deforestation. The world has lost 1.5 billion acres of forest in the last 200 years. Tropical rainforests, which support more than 60% of all known plant species are currently disappearing at a rate of 2.4 acres (two football fields) per second, 214,000 acres (larger than New York City) per day, and 78,000,000 acres (the size of New Mexico) per year. Species Extinction. Human activity is creating a "biodiversity deficit" by destroying ecosystems faster than nature can create new ones. Rates of species extinction are currently estimated at one hundred to one thousand times higher than pre-human levels. In North America, an estimated 36% of fish, 35% of amphibians, 17% of mammals, and 11% of birds are either in jeopardy or are already extinct. Declining Fisheries. After many years of continually increasing worldwide seafood catches, the tonnage of seafood harvested peaked in 1989 and has plateaued since. Harvests for many species have declined. For example, the annual salmon catch in British Columbia fell by nearly 50% from 1985 to 1995. Economic Inequity. The fifth of the world's people living in the highest-income countries controls 86 per cent of world gross domestic product (GDP), 82 per cent of world export markets, 68 per cent of foreign direct investments, and 74 per cent of world telephone lines. In addition to these global indicators, a variety of local and regional indicators also show unsustainable trends. The reasons that our lifestyles are unsustainable are varied and complex. Here are a few of the key factors contributing to unsustainability. What is Contributing to Unsustainability?Overconsumption. Over the last 40 years, the increase in per capita energy and material consumption has increased even faster than the world's human population. Scientists estimate that our present consumption level is exceeding the Earth's carrying capacity by 30%. We are making up that difference by depleting "natural capital". The United States leads the world in material consumption and waste generation. The ‘ecological footprint'(estimated amount of land to support consumption and waste generation patterns) of the typical U.S. resident per year is 25.5 acres, compared to 6.9 acres for the average world resident and 2 acres for the average resident in India. Population Growth. The world's human population is growing at a rate of 385,000 per day. Almost all of this growth (98%) is occurring in developing nations. Many developing nations remain impoverished because economic development cannot keep pace. Even in the United States, where the growth rate is a relatively modest 1.1%, the nation's population will double in roughly 60 years. Dependence upon Non-Renewable Resources. Modern economies rely on a host of substances that are not part of nature's cycle of growth and decay. Because these substances are not renewable, their supplies are constantly diminishing. This causes competition for limited resources, with societal repercussions and resulting damage to the environment. Pollution. The use of substances that accumulate in the ecosphere and are not part of nature's cycle causes environmental pollution in various forms. Carbon dioxide has increased 30% over its natural occurrence in our atmosphere. Poisonous elements mined from below the Earth's crust, such as cadmium and lead, are found at five and eight times, respectively, their natural rates in the ecosphere. Over 70,000 chemical compounds are now present and accumulating in the ecosphere. Many of these may be toxic to humans or other species. Environmentally and Socially Destructive Development Patterns. Historically, human development has not considered the natural processes upon which we depend, thereby damaging or destroying the systems that support us. The typical suburb paves over land that was once the habitat of other species. It also reduces opportunities for social interaction, once as easy as walking down the street to go to the corner store. Today, fewer than 10% of daily commute trips in the U.S. are by walking or bicycling. Inequities in Resource Distribution. Between 1960 and 1994, the disparity in per capita income between the richest and poorest fifth of the world's nations rose from 30:1 to 78:1. The historic solution to poverty — economic growth — has generally served to exacerbate inequities, while degrading the resources upon which all life depends. Limited Public Participation. Problems arise when sectors of society are disenfranchised from political and economic decision-making, contributing to social and economic inequalities. Limited public participation and lack of equity undermine the ability to sustain the natural and community systems upon which all people depend. One of the root causes of the problems described above is the failure to recognize the fundamental limits to Earth's ability to withstand alterations to its natural systems. As a result, most Americans consume wastefully, using our limited resources inefficiently and inequitably. People need to acknowledge that we are an interconnected part of nature. Policies and actions must reflect the important linkages among a healthy environment, a strong economy, and social well being. Indeed, it may be necessary to change some of the operational definitions of "strong economy" and "social well being. These global problems are reflected in — and are affected by — localized unsustainable activity in communities and regions throughout the United States and in other regions of the Earth. Many of these environmentally, economically and socially unsustainable practices are directly connected to local — including remotely influenced local — decision-making. Some examples are summarized as follows: U.S. Indications of Community UnsustainabilitySuburban Sprawl. Current growth in urban and suburban land use far exceeds the population growth in many major metropolitan centers in the U.S. Between 1970 and 1990, for example, metropolitan Chicago's population grew by 4% while the amount of land dedicated to housing grew by 46%. During that same period, metropolitan Cleveland's population fell by 11% but developed land still increased by 33%. This trend has resulted in increased costs for public services, the decline of central cities, increased vehicle miles traveled and emissions of carbon dioxide, the destruction of farmland and open space, and arguably a loss of community. Segregation/Unequal Opportunity. Communities all over the United States continue to be largely divided along economic and racial lines, both physically and socially. Poverty is increasing among whites as well as minorities. Minority groups continue to have less access to economic opportunities, adequate food and shelter, and needed services. Nationwide, nearly 28% of people of color live below the poverty level, as compared to about 11% of whites. Loss of Agricultural Land and Open Space. From 1970 to 1990, more than 19 million acres (30,000 square miles) of rural lands were developed. Every year, construction transforms 400,000 acres of high quality farmland. This amounts to 45.6 acres every hour of every day. Such development weakens the agricultural basis upon which people depend, as well as the natural resources upon which all life depends. Depletion and Degradation of Water Resources. Groundwater over-pumping is occurring in many of the nation's regions. In California, groundwater overdraft averages 1.6 billion cubic meters per year, which amounts to 15% of the state's annual groundwater use. Depletion of the High Plains Aquifer System, which underlies nearly 20% of all irrigated land in the U.S., totals 325 billion cubic meters while current annual depletion is estimated at 12 billion cubic meters. Despite progress made under the Clean Water Act, carcinogens have been found in wells in fourteen different states throughout the Corn Belt and many of the nation's waterways remain badly polluted. In addition, the continuing increase in impermeable surfaces such as parking lots and buildings acts to prevent groundwater recharge, create destructive runoff patterns, and destroy the treatment capacity of natural systems. Loss of Wetlands. Among the most productive ecosystems in the world, wetlands on non-federal lands in the U.S. are disappearing at a rate of 70,000 to 90,000 acres annually. In the 1600s, over 220 million acres of wetlands are thought to have existed in the lower 48 states. By the 1980s, only an estimated 103 million acres remained. Traffic Congestion and Air Pollution. Vehicle-clogged roadways and deteriorating air quality diminish quality of life and health for millions of Americans in cities, suburbs, and outlying areas. Since 1970, vehicle miles traveled have increased by 121%, more than four times the population growth over that same period. Traffic congestion is estimated to cost the nation $168 billion in lost productivity. Although air quality has improved in several metropolitan areas due to more stringent emission standards, 46 million Americans continue to live in counties that do not meet federal air quality standards. Disproportionate Exposure to Environmental Hazards. Low-income people and people of color continue to be disproportionately exposed to environmental hazards in urban and rural areas. In Los Angeles County, California, minorities are three times as likely as whites to live within half a mile of a large, hazardous waste treatment, storage, or disposal facility. Nationwide, Black children from poor families are five times as likely to have dangerous blood lead levels than wealthier White children. White children from households with annual incomes of under $6,000 are three times as likely as White children from families with incomes over $15,000 to have dangerous blood levels of lead. II. Framing the IssueSustainability is the capability to equitably meet the vital human needs of the present without compromising the ability of future generations to meet their own needs by preserving and protecting the area's ecosystems and natural resources. The concept of sustainability describes a condition in which human use of natural resources, required for the continuation of life, is in balance with Nature's ability to replenish them.However, humans are depleting and degrading many resources faster than Earth's natural systems can replenish them, and human consumption continues to grow every year. This is a far-reaching issue that extends well beyond the realm of today's urban and regional planner. Nevertheless, planners are in a position to protect the natural environment and its ability to support human life by working with communities to implement concepts of sustainability in their current and long range planning daily practices. Planning for sustainability promotes responsible development — not anti-development. It requires a democratic process of planning to achieve the greatest common good for all segments of our population, protect the health of the environment and assure future generations of the resources they will need to survive and progress. Specifically, planning for sustainability includes the following processes, practices and outcomes. Planning processes include:
Planning practices include:
Planning outcomes include:
III. Policy PositionsA. GENERAL POLICY OBJECTIVES The American Planning Association and its Chapters have identified four basic objectives for planning toward greater sustainability that can be used as a framework for policy development at each level of decision-making — local, state, regional, and federal — in the broad range of matters with which planners are concerned — land use, housing, transportation, economic development — among others. The four objectives are based upon a framework developed by a group of scientists in Sweden and the U.S combining knowledge of physics, biology, and other fundamental sciences with understanding of societal decision-making. Using these basic objectives as a guiding framework, planners and decision-makers can develop policies, legislation, and action plans toward sustainability that are appropriate to their particular circumstances and communities. For example, efforts to reduce the use of fossil fuels ( Objective 1)may take very different form in an urban settlement compared to efforts in rural communities. Similarly, initiatives to improve the quality of life for disadvantaged residents may be very different in a bedroom suburb than in an inner-city neighborhood (Objective 4). The Specific Policies in the section that follows are guided by these objectives. The attached Appendix illustrates how these objectives can be used systematically to generate a comprehensive strategy of planning actions in the direction of sustainability. While any one of these objectives pursued separately is a worthy endeavor, it is the integrated, comprehensive application of all four objectives that is needed to move toward sustainability in planning and development; hence, no one objective is more important or of greater value than the others. Objectives Of APA's Strategy for Planning for SustainabilityPlanning for sustainability requires a systematic, integrated approach that brings together environmental, economic and social goals and actions directed toward the following four objectives:
B. SPECIFIC POLICY POSITIONS Planners have a leadership role in forming and implementing the strategies by which communities seek to use resources efficiently, to protect and enhance quality of life, and to create new businesses to strengthen their economies, and supporting infrastructures. The best practices of comprehensive community planning — the way we plan the physical layout, or land use, of our communities, is key to sustainable land use. Two main features of our land use practices over the past several decades have converged to generate haphazard, inefficient, and unsustainable development sprawl — zoning regulations that separate housing, jobs, and shopping, and low density development that requires the use of the car. Our economic development and infrastructure planning practices present opportunities for us to encourage businesses and community facilities that offer creative, economically beneficial solutions to wasteful resource use and environmental degradation. Only through the best planning practices can we hope to create healthy communities that can sustain our generation and secure a promising and sustainable future for all children. The listed order of specific policies follows the logic of the four objectives and does not reflect an implied priority of action or importance. As is the case with the four policy objectives, while each of the specific policies are of merit if followed separately, they need to be pursued as a whole in an integrated, comprehensive, systems approach in order to move toward sustainability in community planning and development. While certain policies may be of greater immediate relevance to particular regions, levels of government, and planning expertise, planners can contribute substantially to communities and to society through maintaining this perspective of the whole in our thinking and in our planning approaches.
Appendix APlanning Actions Toward Sustainability[The following section is not APA policy, but rather a guide to the user showing examples of actions planners can take in support of sustainability.] This Appendix contains examples of how the four guiding objectives can be employed as a framework to systematically generate a comprehensive strategy of specific planning actions toward sustainability. The four principles are applied to a range of areas for which planners are concerned — land use, transportation, housing & building, economic development, open space and recreation, infrastructure, growth management, floodplain management, watershed planning, and planning processes and education. The appropriateness of a specific action to, say — reduce fossil fuels — will vary from community to community and region to region, as well as from level to level of governmental responsibility. Hence, the most fruitful planning approach may be for communities and agencies themselves to generate a planning and policy agenda toward sustainability, using the four guiding objectives as a framework in a participatory planning process. I. Land Use Actions toward sustainability:A. Reduced dependence upon fossil fuels, underground metals, and minerals by promoting:
B. Reduction of activities that encroach upon nature through:
C. Meeting human needs fairly and efficiently by:
II. Transportation Actions toward sustainability:A. Reduced dependence upon fossil fuels through:
B. Meeting human needs fairly and efficiently, by:
III. Housing and Building Actions toward sustainability:A. Reduced dependence upon fossil fuels, extracted underground metals, and minerals through:
B. Reduced dependence upon chemicals and unnatural substances through:
C. Reduction of activities that encroach upon nature, through:
D. Meeting human needs fairly and efficiently, by providing for:
IV. Economic Development Actions toward sustainabilityA. Encourage businesses that reduce dependence upon fossil fuels, extracted underground metals, and minerals; for example, businesses that:
B. Encourage businesses that reduce dependence upon chemicals and unnatural substances; for example, enterprises that:
C. Encourage businesses that reduce activities that encroach upon nature; for example, enterprises that:
D. Encourage businesses that meet human needs fairly and efficiently; for example, enterprises that:
V. Open Space/Recreation Actions toward sustainabilityA. Reduced dependence upon fossil fuels, extracted underground metals, minerals, by:
B. Reduced dependence upon chemicals and synthetic substances; for example by
C. Activities that reduce encroachment upon nature, such as:
VI. Infrastructure Actions toward sustainability:A. Reduced dependence upon fossil fuels, extracted underground metals, minerals, by promoting:
B. Reduced dependence upon chemicals and synthetic substances, by promoting:
C. Reduction of activities that encroach upon nature, through:
D. Meeting human needs fairly and efficiently, by:
VII. Growth Management Actions toward sustainability:A. Reduced dependence upon fossil fuels, extracted underground metals, minerals, by promoting:
B. Reduction of activities that encroach upon nature, by promoting:
C. Meeting human needs fairly and efficiently, by promoting:
VIII. Floodplain Management Actions toward sustainabilityA. Reduction of activities that encroach upon nature, by:
VIX. Watershed Planning/Management Actions toward sustainabilityA. Reduction of activities that encroach upon nature, such as:
X. Resource Conservation Actions toward sustainability:A. Reduced dependence upon fossil fuels, extracted underground metals, and minerals, by:
B. Reduction of activities that encroach upon nature; for example, by:
XI. Planning Processes/Education Actions toward sustainability:A. Support activities that reduce dependence upon fossil fuels, extracted underground metals, and minerals; for example, by:
B. Support activities that reduce dependence upon chemicals and unnatural substances; for example, by:
C. Support activities that reduce encroachment upon nature; for example, through:
D. Support meeting human needs fairly and efficiently by:
ReferencesThe topics and material covered in this Policy Guide on Sustainability are germane to a range of additional policy guides developed by the American Planning Association, most notably Policy Summaries addressing: Role of Government and Growing Smart Source MaterialsAmerican Planning Association Agenda for America's Communities, Planning and Community Equity, Washington, DC, undated. Baugher, Eleanor and Leatha Lamison-White, U.S. Bureau of the Census, Current Population Reports P60-194, Poverty in the United States: 1995. U.S. Government Printing Office, Washington, D.C., 1996. Hempel, Lamont C.: Sustainable Communities: From Vision to Action, Claremont Graduate University, 1998. Hempel, Marilyn: Sustainable Communities: A Guide for Grassroots Activists, Population Press, Volume 4, No.5, undated. Krizek, Kevin and Joe Power: A Planners Guide to Sustainable Development, Planners Advisory Service Report No.467, American Planning Association, December, 1996. Local Government Commission: The Ahwahnee Principles, 1994. Lyle, John Tillman: Regenerative Design for Sustainable Development, John Wiley and Sons, Inc., New York, 1994. Rees, William, and Mathis Wackernagel: Our Ecological Footprint: Reducing Human Impact on the Earth, New Society Publishers, Philadelphia, 1996. Robert, Karl-Henrik, Herman Daly, Paul Hawken, and John Holmberg: A Compass for Sustainable Development, The Natural Step Newsletter, Winter, 1996. San Francisco, City and County of: Sustainability Plan for the City of San Francisco, October, 1996. Schlesinger, Michael; Andronova, Natalia; Mendelsohn, Robert; & Morrison, Wendy; Country-Specific Market Impacts of Climate Change, Paper presented at the Intergovernmental Panel on Climate Change, Asia-Pacific Workshop on Integrated Assignment Models, held at the United Nations University, Tokyo, Japan. As cited in Science Bits Quarterly, Summer, 1997. University Corporation for Atmospheric Research. Steingraber, Sandra, Living Downstream, Vintage Books, New York, 1998. Urban Ecology, Inc., Blueprint for a Sustainable Bay Area, November, 1996. United Nations Conference on Environment and Development, Agenda 21: Program of Action for Sustainable Development, Rio de Janeiro, 1992. United Nations Development Programme, Human Development Report, 1999. U.S. Environmental Protection Agency: http://www.epa.gov. Wackernagel, Mathis, interview, "Leaving Smaller Footprints", The Natural Step Newsletter, Fall, 1998, and revised footprint estimates, 1999. World Conservation Union et al.: Caring for the Earth: A Strategy for Sustainable Living, Glad, Switzerland, 1991 | ||