belstaff bolsas Invasion of alien species the situ

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The situation was serious invasion of alien species

000 seed mass is only 0.05 grams), will turn the wheel with the car, wind, people continue to spread out the feet of clay. Think of a number of Xishuangbanna in Yunnan, Meanwhile, Guangxi, Guangdong, Fujian, Hainan, as long as the area is warm and hot springs,[link widoczny dla zalogowanych], are to promote tilapia farming. Crawfish in Anhui, Jiangsu and Zhejiang are many natural ponds have become the main harvest. Water hyacinth in the Three Gorges reservoir area and the beautiful Lijiang River in Guangxi. The iconic pink apple snail egg masses in the landscape more beautiful than Guilin, Yangshuo, water everywhere. Most managers of these species is still limited understanding of the economy, agriculture, Animal Husbandry, while ignoring that they have or are replacing a variety of indigenous economic species in China, is a colorful all over the country assimilated local characteristics ,[link widoczny dla zalogowanych], also causing ecosystem degradation and loss of ecological functions. And we rely on these ecological functions of human is able to survive. In our introduction of invasive alien species have been helpless, we are still at unprecedented speed and quantity of the introduction of more species. Taiwan to spend $ 6,[link widoczny dla zalogowanych],000,000 a year the release of 200 million animals (from insects to monkeys.) Taiwan now has 75 species of exotic bird species found in established populations. Was included in the most dangerous species of the world 1o0 alien invasive species in the red-eared, some areas in Taiwan has exceeded the number of indigenous turtles. specific statistics. But the release has generated a number of biological effects, such as in Hubei Ezhou Liangzi release of the local aquatic snails have caused economic losses of fish farming. Hanjiang River,[link widoczny dla zalogowanych], Dujiangyan, Sichuan, Chengdu Funan River, Hubei Ezhou frequently reported shock Liangzi Long fish now. Since 2000,[link widoczny dla zalogowanych], China began to enthusiastically discuss the problem of invasive alien species. But it is disappointing that, today we face the problem of alien species invasion is more serious than 5 years ago. 5 years, look on the pupil Newsweek in June 2005 27: t No. 26 on the control of invasive alien species far from achieving the desired results. Too much focus on a few of invasive alien species, and often cause severe economic losses species. The length of the quarantine list limited increase, China is only by special notice or control policies to control alien invasive species unexpected events, such as red imported fire ants on the Siren Chang and special notice. This shows that the invasion of alien species in the reaction rate may be accelerated, but in essence and the last quarantine measures and policies are not much different from the control of alien invasive species is still limited to a narrow range of dry. Prohibit the introduction of species for the list of system implementation, but the species can be included in the list, after all, is very limited. In the era of globalization, more and more imports of many species. There are many introduced species, not the past, and now may suddenly become fashionable, such as red-eared, a variety of insects, numerous types of flower gardening, more and more varieties of aquaculture. Species must therefore be introduced as quickly as possible the risk assessment system to evaluate the system based on the introduction of the species. Need to have a committee of experts responsible for establishing and updating the system and is responsible for the risk of invasive species is difficult to determine to assess the risk of rejection of a large species of dry bay. Meanwhile, economic interests are the driving force of the introduction of alien species. But all the losses caused by invasive species, the introduction of the original who are not liable for any cost control and financial compensation. Loss is borne by the state and the majority of the people down. For example, Spartina lead to 6 counties in Fujian aquaculture farmers reduce the number of million a year, these losses are not the perpetrators to compensation. Ban can control a small number of invasive species problems, and greater number of potentially invasive species should be controlled by economic methods to make the introduction of species, taking into account the person or entity may require the introduction of alien species risk assessment of costs after the introduction of monitoring costs, control costs if the invasion and, if costs for damages caused. If we can apply this to the economic costs and benefits of the introduction of alien species control, will effectively reduce the potential introduction of invasive species. In short, our country, the problem of invasive alien species has invested a lot of time, substantial funding and a high degree of attention. But 5 years later, China's biological invasion control system is still not established, management is far not kept pace with the introduction of the phenomenon of alien species than in the past counterparts. Port by the National Academy of Sciences Institute of Zoology, Research Fellow
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