What are the hazards of eucalyptus?

While eucalyptus benefits society, it also sows environmental problems that can not be ignored. It grows fast and can create huge economic benefits. It is a high-quality raw material for the production of paper and wood-based panels. In fact, many people do not know the harmfulness of eucalyptus. Planting fast-growing eucalyptus in a large area requires a lot of nutrients, which can easily lead to barren land, soil fertility decline, land drought resulting in native species degradation and death, serious damage to the ecological environment. Underground rivers and streams are dry and dry. According to the authoritative opinions of the Institute of Ecological Environment of the Chinese Academy of Sciences, Southwest China Forestry University and the State Forestry Administration, the harm of planting eucalyptus in a large area is very great, which is mainly reflected in the following aspects:

Eucalyptus is a "pump".

Eucalyptus is a fast-growing and high-yield forest, which has a strong transpiration and a great demand for soil water. The introduction of eucalyptus in a large area will lead to the decrease of groundwater level, poor ability to maintain water, long time, land surface consolidation and land desertification.

Eucalyptus is a "fertilizer extractor"

Eucalyptus has a great demand for fertilizer and nutrients in the soil. Where eucalyptus is planted, the soil fertility decreases or even dries up, and the original vegetation is seriously damaged because it does not get enough fertilizer and nutrients, which leads to land degradation and deterioration of soil and water conservation. The land is barren, and it is impossible for other plants to survive.

Eucalyptus is a "overlord tree".

Eucalyptus secretes a chemical that inhibits and repels the growth of other plants, making it impossible for plants under eucalyptus to grow, and has a great inhibition on native, native and native species. When it grows, other species will not be able to grow, and the ecology will suffer subversive damage and it will be difficult to recover.

Eucalyptus is a poison gas tree.

Eucalyptus itself is non-toxic, but the rubber-based hydrocarbons released by eucalyptus combine with carbon dioxide to form ozone. The odor emitted is irritating and toxic to the human body and will threaten the health of the local people. The chemical products used by eucalyptus have strong toxicity and long toxic effect, and eucalyptus gas has irritating and toxic effects. When planting eucalyptus, some chemical products with strong toxicity and long toxic effect are used. Once the product is applied to the land, it will be difficult to clean up and cause great pollution to the water quality. After drinking it, it will cause inestimable harm. In addition, the smell of eucalyptus is irritating and toxic to the human body and will threaten the health of the local people.

Since eucalyptus was introduced into China, the alien species giant eucalyptus has brought serious ecological harm to many areas of China, such as biodiversity reduction, soil erosion, land impoverishment and desertification and so on. In recent years, this harm is becoming more and more serious, mixed forests, natural forests, secondary forests and even primitive forests in many areas are being destroyed, and many precious native natural tree species and other plants have become extinct or are on the verge of extinction. The original native mixed forest, natural forest, secondary forest and even primitive forest are being artificially changed into artificial pure eucalyptus grandis forest.