Trees and human life essay

trees and human life essay

All about the Christmas tree: Pagan origins, Christian

If we could engineer this approach to food production, then no crops would ever fail due to severe weather events (floods, droughts, hurricanes, etc.). Produce would be available to city dwellers without the need to transport it thousands of miles from rural farms to city markets. Spoilage would be greatly reduced, since crops would be sold and consumed within moments after harvesting. If vertical farming in urban centers becomes the norm, then one anticipated long-term benefit would be the gradual repair of many of the worlds damaged ecosystems through the systematic abandonment of farmland. In temperate and tropical zones, the re-growth of hardwood forests could play a significant role in carbon sequestration and may help reverse current trends in global climate change. Other benefits of vertical farming include the creation of a sustainable urban environment that encourages good health for all who choose to live there; new employment opportunities, fewer abandoned lots and buildings, cleaner air, safe use of municipal liquid waste, and an abundant supply. Introduction, as of 2004, approximately 800 million hectares of land were in use for food production approximating an area equivalent to Brazil (1 and allowing for the harvesting of an ample food supply for the majority of a human population approaching.3 billion. These land-use estimates include grazing lands (formerly grasslands) for cattle, and represents nearly 85 of all land that can support at least a minimum level of agricultural activity.

Energy and Human evolution - die off

A reliable food supply was the result. This singular invention has facilitated our growth as a species to graduate the point now of world domination over the natural world from which we evolved. Despite the obvious advantage of not having to hunt or scavenge for our next meal, farming has led to new health hazards by creating ecotones between the natural world and our cultivated fields. As the result, transmission rates of numerous infectious disease agents have dramatically increased- influenza, rabies, yellow minutes fever, dengue fever, malaria, trypanosomiasis, hookworm, schistosomiasis and today these agents emerge and re-emerge with devastating regularity at the tropical and sub-tropical agricultural interface. Modern agriculture employs a multitude of chemical products, and exposure to toxic levels of some classes of agrochemicals (pesticides, fungicides) have created other significant health risks that are only now being sorted out by epidemiologists and toxicologists. As if that were no enough to be concerned about, it is predicted that over the next 50 years, the human population is expected to rise to at least.6 billion, requiring an additional 109 hectares to feed them using current technologies, or roughly the. That quantity of additional arable land is simply not available. Without an alternative strategy for dealing with just this one problem, social chaos will surely replace orderly behavior in most over-crowded countries. Novel ways for obtaining an abundant and varied food supply without encroachment into the few remaining functional ecosystems must be seriously entertained. One solution involves the construction of urban food production centers vertical farms in which our food would be continuously grown inside of tall buildings within the built environment.

Our studies have shown that even modest increases in the native plant cover on suburban properties significantly increases the number and species of paper breeding birds, including birds of conservation concern. As gardeners and stewards of our land, we have never been so empowered to help save biodiversity from extinction, and the need to do so has never been so great. All we need to do is plant native plants! Abstract, the advent of agriculture has ushered in an unprecedented increase in the human population and their domesticated animals. Farming catalyzed our transformation from primitive hunter-gatherers to sophisticated urban dwellers in just 10,000 years. Today, over 800 million hectares is committed to soil-based agriculture, or about 38 of the total landmass of the earth. It has re-arranged the landscape in favor of cultivated fields at the expense of natural ecosystems, reducing most natural areas to fragmented, semi-functional units, while completely eliminating many others.

trees and human life essay

Energy and the human journey: Where we have been; Where

my research has shown that alien ornamentals support 29 times less biodiversity than do word native ornamentals. Your Garden Has a function, in the past we didnt designed gardens that play a critical list ecological role in the landscape, but we must do so in the future if we hope to avoid a mass extinction from which humans are not likely to recover. As quickly as possible we need to replace unnecessary lawn with densely planted woodlots that can serve as habitat for our local biodiversity. Homeowners can do this by planting the borders of their properties with native trees plants such as white oaks (. Quercus alba black willows salix nigra red maples acer rubrum green ashes (. Fraxinus pennsylvanica black walnuts juglans nigra river birches betula nigra ) and shagbark hickories (. Carya ovata under-planted with woodies like serviceberry (. Amelanchier canadensis arrowwood ( Viburnum dentatum hazelnut ( Corylus americnus blueberries ( Vaccinium spp).

They have specialized over time to eat only the plants sharing those particular chemicals. When we present insects from Pennsylvania with plants that evolved on another continent, chances are those insects will be unable to eat them. We used to think this was good. Kill all insects before they eat our plants! But an insect that cannot eat part of a leaf cannot fulfill its role in the food web. We have planted kousa dogwood, a species from China that supports no insect herbivores, instead of our native flowering dogwood (. Cornus florida ) that supports 117 species of moths and butterflies alone. In hundreds of thousands of acres we have planted goldenraintree from China instead of one of our beautiful oaks and lost the chance to grow 532 species of caterpillars, all of them nutritious bird food. .

I love trees: Recycling

trees and human life essay

Locke, john Internet Encyclopedia of Philosophy

Redesigning Suburbia, what will it take to give our local animals what they need professional to survive and reproduce on our properties? Native plants, and lots of them. This is a scientific fact deduced from thousands of studies about how energy moves through food webs. Here is the general reasoning. All animals get their energy directly from plants, or by eating something that has already eaten a plant. The group of animals most responsible for passing energy from plants to the animals that cant eat plants is insects. This is what makes insects such vital components of healthy ecosystems.

So many animals depend on insects for food (e.g., spiders, reptiles and amphibians, rodents, 96 of all terrestrial birds) that removing insects from an ecosystem spells its doom. But that is exactly what we have tried to do in our suburban landscapes. For over a century we have favored ornamental landscape plants from China and Europe over those that evolved right here. If all plants were created equal, that would be fine. But every plant species protects its leaves with a species-specific mixture of nasty chemicals. With few exceptions, only insect species that have shared a long evolutionary history with a particular plant lineage have developed the physiological adaptations required to digest the chemicals in their hosts leaves.

Humans cannot live as the only species on this planet because it is other species that create the ecosystem services essential. Every time we force a species to extinction we are encouraging our own demise. Despite the disdain with which we have treated it in the past, biodiversity is not optional. Parks Are not Enough. I am often asked why the habitats we have preserved within our park system are not enough to save most species from extinction. Years of research by evolutionary biologists have shown that the area required to sustain biodiversity is pretty much the same as the area required to generate it in the first place. .


The consequence of this simple relationship is profound. Since we have taken 95 of the. From nature we can expect to lose 95 of the species that once lived here unless we learn how to share our living, working, and agricultural spaces with biodiversity. 95 of all plants and animals! Now there is a statistic that puts climate-change predictions of extinction to shame. And studies of habitat islands with known histories, such as Barro colorado Island in the panama canal and Ashdown Forest in England, have so far shown these predictions to be accurate. Species are lost at the same proportion with which a habitat is reduced in size. The good news is that extinction takes awhile, so if we start sharing our landscapes with other living things, we should be able to save much of the biodiversity that still exists.

Orion Magazine dark Ecology

The song birds that brighten spring mornings have been in decline since the 1960s, having lost 40 of their numbers so far. Birds that breed in meadows are in even more trouble. Once common species such as the northern bobwhite, eastern meadowlark, field sparrow, and grasshopper sparrow have declined 82, 72, 68, and 65, respectively, in total numbers, and are completely absent from many areas that used to support healthy populations. Why we need biodiversity, for most of us, hearing such numbers triggers a passing sadness; but few people feel personally threatened by daddy the loss of biodiversity. Heres why you should. Biodiversity losses are a clear sign that our own life-support systems are failing. The ecosystems that support us - - that determine the carrying capacity of the earth and our local spaces - - are run by biodiversity. It is biodiversity that generates oxygen and clean water; that creates topsoil out of rock and buffers extreme weather events like droughts and floods; and that recycles the mountains of garbage we create every day. And now, with human induced climate change threatening the planet, it is biodiversity that will suck that carbon out of the air and sequester it in living plants if given half a chance.

trees and human life essay

Are there consequences to turning so much land into the park-like settings humans enjoy? Absolutely, both for biodiversity and for. . Our fellow creatures need food and shelter to survive and reproduce and in too many places we have eliminated elongation both. At least 40 of Delawares plant species are rare or extinct, and 41 of its forest birds no longer nest in the state. Over 800 plant and animal species are rare, threatened, or endangered in Pennsylvania and 150 have already disappeared entirely. Many of those that havent suffered local extinction are now too rare to perform their role in their ecosystem. These can be considered functionally extinct.

over or manicured are pristine. Nearly all are second-growth forests that have been thoroughly invaded by alien plants like autumn olive, multiflora rose, oriental bittersweet, and Japanese honeysuckle. . over 3400 species of alien plants have invaded 100 million acres of the. S, and that area is expected to double in the next 5 years. To nature lovers these are horrifying statistics. I stress them so that we can clearly understand the challenge before. We have turned 54 of the lower 48 states into cities and suburbs, and 41 more into various forms of agriculture. Thats right: we humans have taken 95 of nature and made in unnatural. . But does this matter?

We have taken It All, the population of the. S., now over 300 million people, has doubled since most of us were kids and continues to grow by 8640 people per plan day. All of those additional souls, coupled with cheap gas, our love affair with the car, and our quest to own ever larger homes have fueled unprecedented development that continues to sprawl over 2 million additional acres per year (the size of Yellowstone national Park). The Chesapeake bay watershed has lost 100 acres of forest each day since 1985. We have connected all of our developments with 4 million miles of roads, the paved surface is nearly five times the size of New Jersey. Somewhere along the way we decided to convert most of our living and working spaces into huge expanses of lawn. So far we have planted over 62,500 sq miles, some 40 million acres, in lawn.

News for the, sales

If this is news to you, its not your fault. We were taught from childhood summary that gardens are for beauty; they are a chance to express our artistic talents, to have fun with and relax. And, whether we like it or not, the way we landscape our properties is taken by our neighbors as a statement of our wealth and social status. . But no one has taught us that we have forced the plants and animals that evolved in North America (our nations biodiversity) to depend more and more on human-dominated landscapes for their continued existence. We have always thought that biodiversity was happy somewhere out there in nature; in our local woodlot, or perhaps our state and national parks. We have heard nothing about the rate at which species are disappearing from our neighborhoods, towns, counties, and states. Even worse, we have never been taught how vital biodiversity is for our own well-being.


Trees and human life essay
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  1. The character in the film acquires superhuman powers. It will take a superhuman effort for them to win the championship. Sudoku is one of the most popular puzzle games of all time. Sudoku is to fill a 9 9 grid with numbers so that each row, column and 3 3 section contain all of the digits between 1 and. The tonic of the wilderness was Henry david Thoreaus classic prescription for civilization and its discontents, offered in the 1854 essay, walden: Or, life in the woods.

  2. Kingsworth its like having my innermost feelings, thoughts and ideas given voice. Life : Life, living matter and, as such, matter whose attributes include responsiveness, growth, metabolism, energy transformation, and reproduction. The advent of agriculture has ushered in an unprecedented increase in the human population and their domesticated animals. Save earth Essay 3 (200 words) Earth is the most precious thing in this universe having oxygen and water, essential things for life. The natural resources found on earth are deteriorating day by day because of various wrong practices of human beings.

  3. John Locke (1632—1704 john Locke was among the most famous philosophers and political theorists of the 17 th century. He is often regarded as the founder of a school of thought known as British Empiricism, and he made foundational contributions to modern theories of limited, liberal government. An apple is a sweet, edible fruit produced by an apple tree (Malus pumila). Apple trees are cultivated worldwide, and are the most widely grown species in the genus e tree originated in Central Asia, where its wild ancestor, malus. I enjoy your writing so much.

  4. Life 's History as of 2014. Nuclear fusion begins in the sun. 4.6 billion years ago (bya). Script: A girl reads her award-winning essay on trees. Chances are, you have never thought of your garden — indeed, of all of the space on your property — as a wildlife preserve that represents the last chance we have for sustaining plants and animals that were once common throughout the.

  5. At, christmas 2000, the city manager of Eugene or ordered that. Christmas trees could not be erected on city properties because he considered them. Energy and Human evolution by david Price. Please address correspondence. Price, 254 Carpenter Hall, cornell University, ithaca, ny 14853. Significant Energy e vents in Earth's and.

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