What is the cause of the butterfly outbreak in Yunnan?

The butterfly outbreak in Yunnan is caused by the good local ecological environment. This butterfly outbreak, which has attracted much attention, occurred in the Red River Butterfly Valley in Ma 'andi Township, Honghe Prefecture, Yunnan Province. Ma 'andi Township is a place rich in forest resources, with a forest coverage rate as high as 70%. Such rich forest resources provide habitats for many animals, so the animal resources here are also very rich. In addition, Ma 'andi Township is also rich in water resources. Generally speaking, the overall ecological environment of Ma 'andi Township is very good.

Based on the good ecological environment, Ma 'andi Township naturally formed the Butterfly Valley. Butterfly Valley was discovered in 2009. There are more than 400 kinds of butterflies living here. The number of butterfly species here ranks first in the world, including many rare species. Among these hundreds of butterflies, there are sagittaria, Eichhornia crassipes and Papilio, among which sagittaria is the largest. Especially in May and June every year, the arrow-ring butterfly living in Butterfly Valley will explode into a butterfly. If you go to Ma 'an Township at this time, butterflies can be seen everywhere.

This year, the butterflies in Yunnan Butterfly Valley are expected to stage the spectacle of butterfly explosion. According to the test results, hundreds of millions of butterflies will collectively cocoon into butterflies. Such a large-scale butterfly outbreak is also the biggest in the past decade. Butterfly outbreaks are not common, only in Mexico, China and Yunnan. Compared with previous years, this year's butterfly outbreak time is slightly earlier. According to the observer of Butterfly Valley, this year's butterfly outbreak was advanced because the overall weather was high last year and the growth rate of butterflies also accelerated. Therefore, the pupal stage of the butterfly is also advanced, so the butterfly outbreak is expected to appear five days in advance.

Butterflies have high requirements on the ecological environment, and like to live in places with abundant sunshine and suitable temperature. Saddle Township, which is rich in vegetation and water resources, is very suitable for the survival needs of butterflies, so hundreds of butterflies gather in Butterfly Valley, and then a butterfly explosion is staged here year after year. Therefore, the annual butterfly outbreak in Butterfly Valley can actually be regarded as one of the proofs of the good ecological environment here. This year's butterfly outbreak has attracted much attention because of its huge scale, and many people want to go to Ma 'an Township to witness this grand occasion.