Is it more important to keep old friends? My friend asked me suddenly. I considered this question for a while and dicided to write this journal.
From my point of view, making new friends is less important than keeping old friends. There are many contributing causes for this phenomenon. First, old friends can understand us easily and well. There is a good evidence to show that people are willing to spend more time with their old friends than the new ones. People are familiar with old friends, and they have a relaxing atmosphere with their old friends. Communicating with old friends is more easily than talking with new friends. I believe without a shadow of doubt. Only talking with my old friends I can feel much more relaxed, we often talk about our daily life and some jokes, giving some advice to each other. It is my old friends that help me to make the decision that suggesting me begin my college life in America. By doing so, we people will have less pressure and more fun. So they couldn’t feel tired or be lack of energy.
In addition, as everybody may see that old friends may do their best to help their friends, which new friends may not do. Because they have confidence in each others, old friends can risk their lives to assist others in finishing a mission. Just like the old battle companion. They are loyal to their friends and are desperate to help their companions. For they have shared their burden and happiness with each other. So, old friends are more reliable than new friends. As Chinese saying, one should rely on their friends instead of their parents when they stay far away from home. Maybe making new friends can be helpful in some way, but keeping old friends is more helpful to people, such as hunting new jobs, solving social problems or other affairs. By doing so, people can live an easy life. Supposing one person is lack of money, but his parents are not convenient to give money to him. What should he do? Only his old friends can lend him money without thinking. Considering keeping old friends is important.
Last but not least, making new friends can be useful to people. When people make new friends, they have to think about what they have to say and what they cannot say. That may be a practice for their skill of communication. More friends do people make, more skillful they will be. Besides, new friends can be many different kinds of people with many diverse jobs. When talking with these people, we can gain a lot of information and experience which we have never heard of. That’s interesting and amazing. People can become knowledgeable and experienced with communicating with many new friends.
Sunday, November 22, 2009
Friday, November 13, 2009
OUTLINE FOR RESEARCH PAPER
Thesis statement:
If a specie was artificially introduced to one area that it has never been existed before, and has the capacity to develop into a certain number without human intervention so that becomes a threat to the local biological diversity, this is a specie that what we called invasive specie. Whether a invasive specie will do good or bad to our planet is always a debatable issue. In my opinion, no matter what advantage it can bring to us, we should consider the serious consequences of biological invasive.
The current situation of biological invasion.
According to statistics, United States loses 150 billion U.S. dollars each year due to biological invasion and the invasive caused direct economic losses is as high as 57.4 billion yuan a year to chinese forestry industry. The invasion of alien species make a great impact on to the socio-economic,ecological environment and human health.
biological invasion would lead to a serious economic losses.
example: Emerald Ash Borer and glabripennis
Emerald ash borer (EAB), Agrilus planipennis Fairmaire, is an exotic beetle that was discovered in southeastern Michigan near Detroit in the summer of 2002. The adult beetles nibble on ash foliage but cause little damage. The larvae (the immature stage) feed on the inner bark of ash trees, disrupting the tree's ability to transport water and nutrients. Emerald ash borer probably arrived in the United States on solid wood packing material carried in cargo ships or airplanes originating in its native Asia. Emerald ash borer is also established in Windsor, Ontario, was found in Ohio in 2003, northern Indiana in 2004, northern Illinois and Maryland in 2006, western Pennsylvania and West Virginia in 2007, Wisconsin, Missouri and Virginia in summer 2008, and Minnesota and New York in the spring of 2009. Since its discovery, EAB has:
* Killed tens of millions of ash trees in southeastern Michigan alone, with tens of millions more lost in Illinois, Indiana, Kentucky, Minnesota, Missouri, New York, Ohio, Ontario, Pennsylvania, Quebec, Virginia, West Virginia, and Wisconsin.
* Caused regulatory agencies and the USDA to enforce quarantines (Michigan, Illinois, Indiana, Maryland, Minnesota, Missouri, Ohio, New York, Ontario, Pennsylvania, Quebec, Virginia, West Virginia, and Wisconsin) and fines to prevent potentially infested ash trees, logs or hardwood firewood from moving out of areas where EAB occurs.
* Cost municipalities, property owners, nursery operators and forest products industries tens of millions of dollars.
3.biological invasion would make a severe ecological damage and biological contamination.
example:Water hyacinth in china
Biological invasion will have a big impact on human health.
example:SARS
Many of the most feared human diseases are invasive species, including smallpox, HIV/AIDS, and “bird flu.” In the U.S., human and monetary cost from non-indigenous diseases has been especially high for influenza and AIDS. Other significant non-indigenous diseases include syphilis and cholera. In the U.S., there are currently about 53,000 cases of syphilis reported each year, and the cost just to treat newborn children (who contract the disease from infected mothers) was estimated to be over $18 million. The CDC (Centers for Disease Control) reports that about 36,000 Americans die from influenza and related secondary infections each year.
5. Technical Measures to Combat Biological Invasions
A.clear all the species
B.Use comprehensive ecological assessment and monitoring to prevent the invasion of exotic species
C.chemical methods
If a specie was artificially introduced to one area that it has never been existed before, and has the capacity to develop into a certain number without human intervention so that becomes a threat to the local biological diversity, this is a specie that what we called invasive specie. Whether a invasive specie will do good or bad to our planet is always a debatable issue. In my opinion, no matter what advantage it can bring to us, we should consider the serious consequences of biological invasive.
The current situation of biological invasion.
According to statistics, United States loses 150 billion U.S. dollars each year due to biological invasion and the invasive caused direct economic losses is as high as 57.4 billion yuan a year to chinese forestry industry. The invasion of alien species make a great impact on to the socio-economic,ecological environment and human health.
biological invasion would lead to a serious economic losses.
example: Emerald Ash Borer and glabripennis
Emerald ash borer (EAB), Agrilus planipennis Fairmaire, is an exotic beetle that was discovered in southeastern Michigan near Detroit in the summer of 2002. The adult beetles nibble on ash foliage but cause little damage. The larvae (the immature stage) feed on the inner bark of ash trees, disrupting the tree's ability to transport water and nutrients. Emerald ash borer probably arrived in the United States on solid wood packing material carried in cargo ships or airplanes originating in its native Asia. Emerald ash borer is also established in Windsor, Ontario, was found in Ohio in 2003, northern Indiana in 2004, northern Illinois and Maryland in 2006, western Pennsylvania and West Virginia in 2007, Wisconsin, Missouri and Virginia in summer 2008, and Minnesota and New York in the spring of 2009. Since its discovery, EAB has:
* Killed tens of millions of ash trees in southeastern Michigan alone, with tens of millions more lost in Illinois, Indiana, Kentucky, Minnesota, Missouri, New York, Ohio, Ontario, Pennsylvania, Quebec, Virginia, West Virginia, and Wisconsin.
* Caused regulatory agencies and the USDA to enforce quarantines (Michigan, Illinois, Indiana, Maryland, Minnesota, Missouri, Ohio, New York, Ontario, Pennsylvania, Quebec, Virginia, West Virginia, and Wisconsin) and fines to prevent potentially infested ash trees, logs or hardwood firewood from moving out of areas where EAB occurs.
* Cost municipalities, property owners, nursery operators and forest products industries tens of millions of dollars.
3.biological invasion would make a severe ecological damage and biological contamination.
example:Water hyacinth in china
Biological invasion will have a big impact on human health.
example:SARS
Many of the most feared human diseases are invasive species, including smallpox, HIV/AIDS, and “bird flu.” In the U.S., human and monetary cost from non-indigenous diseases has been especially high for influenza and AIDS. Other significant non-indigenous diseases include syphilis and cholera. In the U.S., there are currently about 53,000 cases of syphilis reported each year, and the cost just to treat newborn children (who contract the disease from infected mothers) was estimated to be over $18 million. The CDC (Centers for Disease Control) reports that about 36,000 Americans die from influenza and related secondary infections each year.
5. Technical Measures to Combat Biological Invasions
A.clear all the species
B.Use comprehensive ecological assessment and monitoring to prevent the invasion of exotic species
C.chemical methods
Friday, November 6, 2009
Research Log
A. Topic: Invasive species
B. A thesis statement: the serious consequence of biological invasion.
B. A thesis statement: the serious consequence of biological invasion.
- Title:
- Impact of invasive plants on the species richness, diversity and composition of invaded communities.
- Authors:
- Hejda, Martin1,2
Pyšek, Petr1,2 pysek@ibot.cas.cz
Jarošík, Vojtěch1,2 - Source:
- Journal of Ecology; May2009, Vol. 97 Issue 3, p393-403, 11p, 2 charts, 1 diagram, 2 graphs
- Title:
- Invasive species impacts on ecosystem structure and function: A comparison of the Bay of Quinte, Canada, and Oneida Lake, USA, before and after zebra mussel invasion
- Authors:
- Miehls, Andrea L. Jaeger1,2 andrea.jaeger@noaa.gov
Mason, Doran M.1,2
Frank, Kenneth A.1,3
Krause, Ann E.4
Peacor, Scott D.1
Taylor, William W.1 - Source:
- Ecological Modelling; Nov2009, Vol. 220 Issue 22, p3182-3193, 12p
- Title:
- Five Potential Consequences of Climate Change for Invasive Species.
- Authors:
- HELLMANN, JESSICA J.1
BYERS, JAMES E.2
BIERWAGEN, BRITTA G.3
DUKES, JEFFREY S.4 - Source:
- Conservation Biology; Jun2008, Vol. 22 Issue 3, p534-543, 10p, 2 charts, 3 diagrams, 1 bw
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