The Fall of Biodiversity

Early in the morning, all kinds of animals can walk around in any normal suburban backyard. Common animals that can be observed are rabbits, squirrels, birds and so on. If they slowly disappear, they will never be seen again. This is a tragic fact that began to appear on the earth. The earth is now one of the greatest species extinctions in history. Please do not put it on the cover of the newspaper. The answer to this question is time.

Several factors contributing to the reduction of the total amount of regional biodiversity are also based on society. This includes rapid population growth, overuse of resources, ineffective and ineffective knowledge, inefficient management, and increased demand for industrial and technically altered regions. Human activity is an important cause of global biodiversity crisis. Human activity can be regarded as a major cause of the decline in the diversity of life on Earth.

Despite years of understanding of the importance of biodiversity, human activities have led to the loss of biodiversity. Biodiversity means the diversity of flora and fauna in certain habitats around the world. The scholars have estimated that "there are 5 million kinds on the earth, only nine species are known". Nevertheless, the number of species vanishes daily by human activity. For example, illegal logging is the cause of the greatest extinction in the world, as tropical forests contain at least half of the Earth's species. Scientists say that "animal and plant species are lost at 100 to 1000 times faster than natural extinction".

Biodiversity is a variety of organisms and species that exist in a particular ecosystem. Tropical rainforests are one of the most biologically diverse ecosystems on Earth. However even temperate forests with only a few overburial species may contain surprising levels of biodiversity when considering all the other organisms found there (eg herbs, mammals, birds, none vertebrate). , Fungi, etc.)

Biodiversity generally refers to the distribution and abundance of animal and plant species within ecosystems (US Forest Service 1989). For example, forests that are described as having high biodiversity are capable of supporting (and supporting) various microbial life forms of amphibians, animals, birds, fungi, insects, plants and microorganisms It is a forest with net and environment. . In general, higher levels of biodiversity in ecosystems are often associated with the relative health of the ecosystem. In other words, many people believe forest ecosystems are healthy even when forests have high levels of biodiversity (see Chapter 6 for details). However, the strategy for maintaining high levels of biodiversity is very different. Some natural resource managers place the forest near the wasteland (Figure 4.56) and some people prefer the natural process to change these forests over time. Both approaches lead to a certain level of biodiversity that maintains healthy ecosystems.