Turfgrass lawns help remove carbon dioxide from the atmosphere through photosynthesis and store it as organic carbon in soil, making them important “carbon sinks.” However, greenhouse gas emissions from fertilizer production, mowing, leaf blowing and other lawn management practices are similar to or greater than the amount of carbon stored by ornamental grass in parks, a UC Irvine study shows.
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These emissions include nitrous oxide released from soil after fertilization. Nitrous oxide is a greenhouse gas that’s 300 times more powerful than carbon dioxide, the Earth’s most problematic climate warmer.
“Lawns look great – they’re nice and green and healthy, and they’re photosynthesizing a lot of organic carbon. But the carbon-storing benefits of lawns can be counteracted by greenhouse gas emissions,” said Amy Townsend-Small, Earth system science postdoctoral researcher and lead author of the study, forthcoming in the journal Geophysical Research Letters.

The research results are important to greenhouse gas legislation being negotiated. “We need this kind of carbon accounting to help reduce global warming,” Townsend-Small said. “The current trend is to count the carbon sinks and forget about the greenhouse gas emissions, but it clearly isn’t enough.”

Turfgrass is increasingly widespread in urban areas and covers 1.9 percent of land in the continental U.S., making it the most common irrigated crop.

In the study, Townsend-Small and colleague Claudia Czimczik analyzed grass in four parks near Irvine, Calif. Each park contained two types of turf: ornamental lawns (picnic areas) that are largely undisturbed, and athletic fields (soccer and baseball) that are trampled and replanted and aerated frequently.

The researchers evaluated soil samples over time to ascertain carbon storage, or sequestration, and they determined nitrous oxide emissions by sampling air above the turf. Then they calculated carbon dioxide emissions resulting from fuel consumption, irrigation and fertilizer production using information about lawn upkeep from park officials and contractors.

The study showed that nitrous oxide emissions from lawns were comparable to those found in agricultural farms, which are among the largest emitters of nitrous oxide globally.

In ornamental lawns, nitrous oxide emissions from fertilization offset just 10 percent to 30 percent of carbon sequestration. But fossil fuel consumption for management, the researchers calculated, released almost as much or more carbon dioxide than the plots could take up, depending on management intensity. Athletic fields fared even worse, because – due to soil disruption by tilling and resodding – they didn’t trap nearly as much carbon as ornamental grass but required the same emissions-producing care.

“It’s unlikely for these lawns to act as net greenhouse gas sinks because too much energy is used to maintain them,” Townsend-Small concluded.

Previous studies have documented lawns storing carbon, but this research was the first to compare carbon sequestration to nitrous oxide and carbon dioxide emissions from lawn grooming practices.

The UCI study was supported by the Kearney Foundation of Soil Science and the U.S. Department of Agriculture.

About the University of California, Irvine: Founded in 1965, UCI is a top-ranked university dedicated to research, scholarship and community service. Led by Chancellor Michael Drake since 2005, UCI is among the most dynamic campuses in the University of California system, with nearly 28,000 undergraduate and graduate students, 1,100 faculty and 9,000 staff. Orange County’s largest employer, UCI contributes an annual economic impact of $3.9 billion.

News Radio: UCI maintains on campus an ISDN line for conducting interviews with its faculty and experts. Use of this line is available for a fee to radio news programs/stations that wish to interview UCI faculty and experts. Use of the ISDN line is subject to availability and approval by the university.

Owners Provided with Numerous Styling Options

Custom urban home plans are highly desired by those that want to live in a city and still have a say in how the home is constructed. There are many different features that can in incorporated into the home for a unique look. Urban architecture generally follows some of the same characteristics that loft homes use. High ceilings with many windows are common elements designers utilize.

Unlike other housing options, urban home designs won’t be limited to certain design features because of community restrictions or landlord rules. You will own every part of the house, which gives you countless options when it comes to developing both the interior and exterior design. Urban housing development is very functional so that every area of space is efficiently used. Open floor plans with multi-level living space creates spacious rooms that are well lit with natural sunlight.

Green living can easily be incorporated into urban homes. In fact, people that choose to live in the city are already playing a huge role by not taking away from natural land. Custom urban home architects can use recycled and non-toxic materials to give you and your family safer breathing air. Taking advantage of the convenient public transportation will save money on gas and maintenance of your car, while additionally reducing the amount of toxic fumes in the air.

Inner City Living Appeals to Professionals of Any Age

With the cost of living on the rise, many people don’t want to spend the gas it takes to drive to and from their job in the city. Luckily, urban houses provide families with a chic and resourceful residence that allows them to enjoy being close to popular city attractions, such as upscale bars, restaurants, or shopping centers. Money can be spent on other things rather than expensive gas, while still owning a home that is full of sophisticated style. For those that want to own a house but can’t imagine moving out of your favorite city, an urban house can be the perfect solution.

With so many advantages, it’s no wonder why people are moving back to the city and working with professional architects to design a home with urban style. They are extremely functional by using the interior space as efficiently as possible. They can follow numerous green building techniques that help preserve the planet’s resources while creating a healthier environment for adults and children. Urban homes are located in areas that are close to a wide range of eateries and stores that aren’t found outside the city. Choosing an area where you can live, work, and play can fascinate people in any stage of their life, which is why urban housing has become so trendy.

If you want a traditional small-town feel without moving to the middle of nowhere, consider a place like Promenade in the city of Hercules, Calif.

Built near the waterfront of the San Francisco Bay and about 20 miles northeast of San Francisco, the houses have a historical look with Victorian, Craftsman or Italianate design. All have front porches to encourage neighborliness, are built close together and garages are, in many cases, located in the back of the houses or accessible by alleyways. Streets are narrow to slow down traffic.
“In contrast to many suburban towns, we know our neighbors. And we feel it’s a very safe place for children,” says Robert Reber, a city planner for Hercules who lives in Promenade with his wife and 4-year-old.
The New Urbanism Movement
Promenade is an example of a type of city planning called the new urbanism, which seeks to build or restore suburban towns to resemble small towns of the late 19th and early 20th century. A reaction against the suburban sprawl common today, new urbanist towns are planned communities near large urban centers. They have historical architecture, front porches and picket fences and are reminiscent of a time long gone. Built to encourage walking and biking rather than driving, they often have parks or a town plaza in the center of town and restaurants and small businesses within easy walking distance.
“New urbanist towns are gaining in popularity,” says David Kooris, director of the Connecticut office of the Regional Plan Association, a nonprofit that promotes improved community design in the New York metropolitan area. “The philosophy goes back to the historical patterns of development of the 1920s and 1930s — before the automobile dominated — and it was possible to walk and bike to see your neighbors and do your daily chores.”
When Promenade was completed in 2000, homebuyers snatched up the available 217 houses. In fact, all the houses in the community sold within 18 months for prices ranging from the low 400s to the mid-600s. While the pace of buying for two similar neighborhoods in Hercules has slowed a bit, the houses still have an appeal for homebuyers who want to live within commuting distance of San Francisco but also appreciate the advantages of a small town.
How It Began
The first new urbanist development in the United States was founded in 1979 by builder/developer Robert Davis on 80 acres in the planned community of Seaside, Fla., a town on the Florida Panhandle between Fort Walton Beach and Panama City. Many of the houses in Seaside are built in a bungalow style with wraparound porches and picket fences. The town has a central square surrounded by a post office, an amphitheater that hosts everything from yoga classes to theater performances and small businesses such as restaurants, ice cream shops and retail clothing shops.
“There is a certain character to houses in Seaside. But the idea of Seaside is more than cute houses; it’s also a pleasurable place to inhabit, where any resident can find things happening within a quarter-mile radius of their home,” says town architect Leo Casas, who notes that the commute from his Seaside home to his office is “150 yards with dog in tow.”
A Growing Trend
New urbanist towns are more common in the West and Midwest, where land is more plentiful, but there are examples of small towns on the East Coast that have rebuilt themselves based on new urbanist values. In towns such as Connecticut’s New Canaan, East Rutherford, N.J., and Newton, Mass., city planners have tried to revitalize their historic downtowns to provide a sense of community and more walkable neighborhoods, Korris says.
Seaside and Hercules are planning further development. In Hercules, a network of small neighborhoods interconnected by nature paths, parks and a transit center is in the works. Seaside’s plan calls for slowly increasing the size of the town in a series of buildouts. But the character of the place won’t be sacrificed, Casas said. “We’ll continue growing, but at a slow pace. Like many small towns, nothing happens too quickly here,” he said.