Showing posts with label land use. Show all posts
Showing posts with label land use. Show all posts

Friday, March 28, 2008

Moving Down the Food Chain

Lester Brown's latest book is on sale in bookstores and at Earth-Policy.org, and can be read in full online there, free of charge.EXCERPT FROM PLAN B 3.0, CH. 9: "FEEDING 8 BILLION WELL"

Lester Brown, EPI :: One of the questions I am most often asked is, “How many peo-ple can the earth support?” I answer with another question: “Atwhat level of food consumption?” Using round numbers, at theU.S. level of 800 kilograms of grain per person annually for food and feed, the 2-billion-ton annual world harvest of grain would support 2.5 billion people. At the Italian level of consumption of close to 400 kilograms, the current harvest would support 5 billion people. At the 200 kilograms of grain consumed by the average Indian, it would support a population of 10 billion.

In every society where incomes rise, people move up the food chain, eating more animal protein as beef, pork, poultry, milk, eggs, and seafood. The mix of animal products varies with geography and culture, but the shift to more livestock products as purchasing power increases appears to be universal. As consumption of livestock products, poultry, and farmed fish rises, grain use per person also rises. Of the roughly 800 kilograms of grain consumed per person each year in the United States, about 100 kilograms is eaten directly as bread, pasta, and breakfast cereals, while the bulk of the grain is consumed indirectly in the form of livestock and poultry products. By contrast, in India, where people consume just under 200 kilograms of grain per year, or roughly a pound per day, nearly all grain is eaten directly to satisfy basic food energy needs. Little is available for conversion into livestock products.

Of the three countries just cited, life expectancy is highest in Italy even though U.S. medical expenditures per person are much higher. People who live very low or very high on the food chain do not live as long as those in an intermediate position. Those consuming a Mediterranean type diet that includes meat, cheese, and seafood, but all in moderation, are healthier and live longer. People living high on the food chain, such as Americans or Canadians, can improve their health by moving down the food chain. For those who live in low-income countries like India, where a starchy staple such as rice can supply 60 percent or more of total caloric intake, eating more protein-rich foods can improve health and raise life expectancy.

In agriculture we often look at how climate affects the food supply but not at how what we eat affects climate. While we understand rather well the link between climate change and the fuel efficiency of the cars we buy, we do not have a comparable understanding of the climate effect of various dietary options. Gidon Eshel and Pamela A. Martin of the University of Chicago have addressed this issue. They begin by noting that the energy used in the food economy to provide the typical American diet and that used for personal transportation are roughly the same. In fact, the range between the more and less carbon-intensive transportation options and dietary options is each about 4 to 1. With cars, the Toyota Prius, a gas-electric hybrid, uses scarcely one fourth as much fuel as a Chevrolet Suburban SUV. Similarly with diets, a plant-based diet requires roughly one fourth as much energy as a diet rich in red meat. Shifting from a diet rich in red meat to a plant-based diet cuts greenhouse gas emissions as much as shifting from a Suburban SUV to a Prius.

The inclusion of soybean meal in feed rations to convert grain into animal protein more efficiently, the shift by consumers to more grain-efficient forms of animal protein, and the movement of consumers down the food chain all can help reduce the demand for land, water, and fertilizer. This reduces carbon emissions and thus helps to stabilize climate as well.

Sunday, March 23, 2008

FOOD SUPPLY RESTORATION & SECURITY: AFRICA


As part of the Crisis Policy Forum, the HotSpring collaborative innovation initiative is now planning an effort to tackle the problem of food supply management and chronic food and water scarcity in Africa. The lessons from this experiment in collaborative research will be applicable in many cases to other situations around the world, and we are open to spurring dialogue in those areas as outgrowths of this ongoing discussion.

Among the basic problems we now face, as a species, is the confluence of difficulties in providing reliable clean drinking water reserves, a viable and sustainable food web, by way of an integrated agricultural and distribution ecosystem, economic stability and cohesive political engagement within a defensible political framework.

Ethnic rivalries, resource-focused regional proxy wars, like the massive decade-long tragedy in DR Congo (in which as many as 14 states played a role), and political manipulations and their fallout, as we have seen in Kenya this winter, threaten to further undermine production and distribution systems.

Add to such conflicts the tens of millions of fatal cases of HIV infection, and we have a crisis of historic proportions where mass peril will drive political structures, borders and aspirations on an unprecedented scale. Small-scale logical enhancements to political and economic stability, democratization and integrated decentralization of administrative resources, are needed to reduce risk of mass starvation and heal mounting tensions.

Discussion is now open: please comment below. We would like to focus on practical solutions to:
  1. Problems related to infusing food supply with enough to feed all those in need;
  2. Environmental degradation: i.e. resilience services, ecological measures, ecosystem management;
  3. Land use deficiencies: how to improve;
  4. Animal and timber poaching;
  5. Economic corrosion and instability;
  6. Corruption and funding shortfalls;
  7. Cooperative measures for extending food supply to conflict-afflicted areas;
  8. Overcoming limits of transportation infrastructure;
  9. Contagious disease: treatment, education, socio-economic impact;
  10. Communications gaps: get relevant anecdotal and researched data to those who can use it.

Sunday, September 30, 2007

The Elders Initiative, an Effort to Infuse Wisdom into Global Policy & Conflict Resolution


The Elders is a humanitarian initiative led by South African archibishop Desmond Tutu and former South African pres. Nelson Mandela, designed to bring the African "village elders" concept to the global village, in an effort to defuse flashpoint crisis situations and speed responsible policy-making. Its foundations are the basic principles of human rights and the experience and credibility of the group's emissaries.

Apart from Mandela and Tutu, the group also includes Mandela's wife Graça Machel, Kofi Annan, Lakhtar Brahimi, fmr. US pres. Jimmy Carter, Ela Bhatt, Gro Brundtland, Fernando Cardoso, Li Zhaoxing, Mary Robinson and Muhammad Yunus, founder of the Nobel laureate Grameen Bank for microcredit.

The stature of those included is part of what is expected to bring an international diplomatic prestige to its chosen approach to select humanitarian causes and conflict resolution. The Elders have said they reserve a place for detained Burmese opposition leader Aung San Suu Kyi. The idea was originally brought to Mandela seven years ago by British billionaire and philanthropist Richard Branson.

Nelson Mandela, in his inaugural address to announce the group's founding, said:
"As institutions of government grapple, often unequally, with challenges they face, the efforts of a small, dedicated group of leaders, working objectively and without any vested interest in the outcome, can help resolve what often seem like intractable problems ... Using their collective experience, their moral courage and their ability to rise above the parochial concerns of nation, race and creed, they can help to make our planet a more peaceful, healthy and equitable place to live."

He added that the group will not become "arbitrary and arrogant" and will seek "long-term, sustainable approaches", based on the advice of local interests, scientific experts, political advisors and "anyone who is motivated to help resolve a problem".

The group's first mission will be to Sudan, in an effort to lay the groundwork for a lasting political solution to end the killing in Darfur and help Darfurians return to their homes, re-establish civil society, obtain an appropriate level of self-rule and get the food and medical aid needed to help achieve these goals.

The peace negotiated in Darfur is tenuous at best, as one of the major rebel factions has refused to sign on so long as the Khartoum government remains in political and military control of the region.

Mandela also declared that "It is kindness and generous accomodation that are the catalysts for real change", citing the African proverbial idea that "we are human only through the humanity of other human beings" and foresaw the group bringing "new energy to areas where others have become weary, because of endless conflict."

Wednesday, September 26, 2007

Population, Land & Conflict


Lester R. Brown, EPI :: As land and water become scarce and as competition for these vital resources intensifies, we can expect mounting social tensions within societies, particularly between those who are poor and dispossessed and those who are wealthy, as well as among ethnic and religious groups. Population growth brings with it a steady shrinkage of life-supporting resources per person. That decline, which is threatening to drop the living standards of more and more people below survival level, could lead to unmanageable social tensions that will translate into broad-based conflicts.

Worldwide, the area in grain expanded from 590 million hectares (1,457 million acres) in 1950 to its historical peak of 730 million hectares in 1981. By 2004, it had fallen to 670 million hectares. Even as the world’s population continues to grow, the area available for producing grain is shrinking.

Expanding world population cut the grainland area per person in half, from 0.23 hectares (0.57 acres) in 1950 to 0.11 hectares in 2000. (See data at http://www.earth-policy.org/Books/Out/ch2data_index.htm) This area of just over one tenth of a hectare per person is half the size of a building lot in an affluent U.S. suburb. This halving of grainland area per person makes it more difficult for the world’s farmers to feed the 70 million or more people added each year. If current population projections materialize and if the overall grainland area remains constant, the area per person will shrink to 0.07 hectares in 2050, less than two thirds that in 2000.

Having less cropland per person not only threatens livelihoods; in largely subsistence societies with nutrient-depleted soils, it threatens survival itself. Tensions among people begin to build as land holdings shrink below that needed for survival. The Sahelian zone of Africa, the broad swatch of the continent between the Sahara Desert and the more lush forested land to the south, which stretches from Sudan in the east through Mauritania in the west, has one of the world’s fastest-growing populations. It is also an area of spreading conflicts.

In troubled Sudan, 2 million people have died and over 4 million have been displaced in the long-standing conflict of more than 20 years between the Muslim north and the Christian south. The conflict in the Darfur region in western Sudan that began in 2003 illustrates the mounting tensions between two Muslim groups—Arab camel herders and black African subsistence farmers. Government troops are backing Arab militias, who are engaging in the wholesale slaughter of black Africans in an effort to drive them off their land, sending them into refugee camps. To date, some 140,000 people have been killed in the conflict and another 250,000 have died in the refugee camps of hunger and disease.

In Nigeria, where 130 million people are crammed into an area not much larger than Texas, overgrazing and overplowing are converting 351,000 hectares (1,350 square miles) of grassland and cropland into desert each year. The conflict between farmers and herders in Nigeria is a war for survival. As the New York Times reported in June 2004, “in recent years, as the desert has spread, trees have been felled and the populations of both herders and farmers have soared, the competition for land has only intensified.” [Complete Text]

Saturday, September 22, 2007

World Creating Food Bubble Economy Based on Unsustainable Use of Water


Lester R. Brown, EPI :: On March 16, 2003, some 10,000 participants [met] in Japan for the third World Water Forum to discuss the world water prospect. Although they [would] be officially focusing on water scarcity, they [would also] indirectly be focusing on food scarcity because 70 percent of the water we divert from rivers or pump from underground is used for irrigation.

As world water demand has tripled over the last half-century, it has exceeded the sustainable yield of aquifers in scores of countries, leading to falling water tables. In effect, governments are satisfying the growing demand for food by overpumping groundwater, a measure that virtually assures a drop in food production when the aquifer is depleted. Knowingly or not, governments are creating a "food bubble" economy.

As water use climbs, the world is incurring a vast water deficit, one that is largely invisible, historically recent, and growing fast. Because the impending water crunch typically takes the form of falling water tables, it is not visible. Falling water tables are often discovered only when wells go dry.

Once the growing demand for water rises above the sustainable yield of an aquifer, the gap between the two widens each year. The first year after the line is crossed, the water table falls very little, with the drop often being scarcely perceptible. Each year thereafter, however, the annual drop is larger than the year before.

[...] Aquifers are being depleted in scores of countries, including China, India, and the United States, which collectively account for half of the world grain harvest. Under the North China Plain, which produces more than half of China's wheat and a third of its corn, the annual drop in the water table has increased from an average of 1.5 meters a decade ago to up to 3 meters today. Overpumping has largely depleted the shallow aquifer, so the amount of water that can be pumped from it each year is restricted to the annual recharge from precipitation. This is forcing well drillers to go down to the region's deep aquifer, which, unfortunately, is not replenishable.

He Quincheng, head of the Geological Environmental Monitoring Institute in Beijing, notes that as the deep aquifer under the North China Plain is depleted, the region is losing its last water reserve—its only safety cushion. His concerns are mirrored in a World Bank report: "Anecdotal evidence suggest that deep wells [drilled] around Beijing now have to reach 1,000 meters [more than half a mile] to tap fresh water, adding dramatically to the cost of supply." In unusually strong language for the Bank, the report forecasts "catastrophic consequences for future generations" unless water use and supply can quickly be brought back into balance. [Complete Text]

MORE AT
Sentido.tv, Water Crisis Special Report
Sentido.tv, Sustainable Development Report
EPI, la Eco-Economía, en español