A tree forms an oasis of shade, provides wildlife habitat, and improves air quality. In urban “heat islands,” vast stretches of asphalt magnify and reflect sun, sending CO2 directly skyward and creating “dead zones” below. Where trees are most needed? Cities and suburbs Pines (including White, Red, Ponderosa and Hispaniola) are the most carbon-effective conifer find out which is right for your zone.Blue Spruce, widely introduced as an ornamental, thrives in most northern regions in the Pacific Northwest, Douglas Fir also excels.Dogwood offers lovely seasonal flowers this and other particularly dense trees like Black Walnut can store more carbon in a smaller tree.In the north, consider American Linden instead. American Sweetgum has brilliant fall colors, is large and long-lived.London Plane is an excellent choice for urban planning, very tolerant of pollution and root-cramping, resistant to cold and disease.Avoid white mulberry, which has proven invasive in some locations. Native Red Mulberry provides the added benefit of delicious seasonal fruit.Horse Chestnut grows well in cities its domed top provides exceptional shade which offers passive cooling benefits.Oak (White Oak, Willow Oak, Laurel Oak and Scarlet Oak) has adapted to thrive in many climates, provides food and shelter to wildlife.Silver Maple can trap nearly 25,000 pounds of CO2 in a 55 year period, according to the Center for Urban Forests.Yellow Poplar (or Tulip Tree), the top carbon-storer in one New York City study, works hard under rough conditions.Then consider these reliable and versatile star-performers. The “best trees” vary by region, so look around local parks to see what’s hardy in your climate zone. Low-maintenance, disease-resistant species will do better without greenhouse-gas-producing fertilizers and equipment. Native species will thrive in your soil and best support local wildlife.Large leaves and wide crowns enable maximum photosynthesis.Long-lived trees can keep carbon stored for generations without releasing it in decomposition.Fast growing trees store the most carbon during their first decades, often a tree’s most productive period. Studies have identified several optimal tree species for carbon storage, and botanists continue to experiment with new hybrids. Surprisingly, we should avoid trees such as the willow, which store comparably little carbon and emit more harmful volatile organic compounds.
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |