Global Land Use Practices 'Biggest Threat' to Human Health

A new study shows that the global pattern of "massive conversion" of of land use from natural to agricultural and urban uses has the "most significant impact on the world's biosphere."

1 minute read

August 12, 2005, 11:00 AM PDT

By Michael Dudley


"Land use, according to the report, is no longer just a local issue. It is a force of global importance as the world's six billion people compete for food, water, fiber and shelter. The report...is a comprehensive review of scientific research on the world's major land-use practices - agriculture, urban and rural development, deforestation and other natural resource extraction - and their impacts on the world's ecosystems.

"Nearly one-third of the world's land surface is now in use for agriculture and millions of acres of natural ecosystems are converted each year. Many of the agricultural practices, built on Western-style methods, are unsustainable, requiring large applications of chemical fertilizers and further sculpting of the landscape to divert water to marginal lands."

Thanks to Michael Dudley

Tuesday, August 9, 2005 in GreenBiz

Young Professional

I love the variety of courses, many practical, and all richly illustrated. They have inspired many ideas that I've applied in practice, and in my own teaching. Mary G., Urban and Environmental Planner

I love the variety of courses, many practical, and all richly illustrated. They have inspired many ideas that I've applied in practice, and in my own teaching.

Mary G., Urban and Environmental Planner

Get top-rated, practical training for planners

"Planetizen federal action tracker" logo superimposed over black and white image of US Capitol dome.

Planetizen Federal Action Tracker

A weekly monitor of how Trump’s orders and actions are impacting planners and planning in America.

September 16, 2026 - Zachary Whalen

Geese flock to a frozen pond in Aurora, Colorado. There are houses in the background.

Colorado’s Largest Data Center Could Rise Next to Homes — Without a Public Hearing

The proposed campus would consume 11 times the power of Denver International Airport; as it has across the country, opposition mounts.

September 17, 2026 - Capital & Main

The Hoover Dam blocking the Colorado River. The river's water level is noticeably low. The cliffs surrounding the blue water are brown and jagged.

US to reduce Colorado River water deliveries to Mexico

A new Colorado Treaty amendment reduces Mexico’s Colorado River water allocation by 250,000 acre feet.

September 11, 2026 - The Arizona Republic

A busy highway in Richmond, with construction and the city visible in the background.

'This is going to be painful:’ Virginia stares down $1.7 billion funding gap for highway maintenance

The state may address the deficit by shifting $290 million from its construction budget to maintenance projects.

3 hours ago - The Virginia Mercury

The Gross Reservoir, a large body of water surrounded by trees and mountains.

Judges permit Denver to divert 77,000 acre feet from the Colorado River for reservoir expansion

Overuse and climate change have caused the Colorado River’s water levels to plummet.

September 18 - Inside Climate News

Passengers board an Amtrak train under a cloudy sky.

Amtrak, CN end decades-long dispute with eight-year agreement

The new operating agreement establishes an updated framework for the companies to work together, including processes to resolve disputes.

September 18 - Mass Transit