Geography: What is the cause of the debris flow in Zhouqu?

China Garden Network August 13 News: In the 1950s and 1980s, Zhouqu was once the south bank of the Longshang River, with beautiful water plants and lush trees. However, after continuous large-scale logging, this mountain without vegetation gradually weathered and lost, and every time there is a storm, mudslides and even landslides will occur. According to statistics, from the establishment of Zhouqu Forestry Bureau in August 1952 to June, 1990, 189750 mu of forest was cut down, and forests in many places became dilapidated secondary forests. Coupled with civil timber, deforestation, reselling and misappropriation, the county's forests are reduced at a rate of 654.38+10,000 cubic meters every year, and the vegetation is seriously damaged, and the ecological environment is destroyed beyond the limit.

In addition, the local land is small and crowded, forced by livelihood, and farmland is often reclaimed and cut down, forest area is reduced, vegetation protection is lost, and soil erosion is serious.

Two charges: indiscriminate mining

Along the Bailong River, the mountains are high and the clouds are light, and the resources are rich, which has also become the home of many people. According to Zhouqu netizens, thousands of machines are digging in the mountains along the Bailong River all the year round. Mountain materials and jade are all treasures. Good materials can't be dug a few pieces a year, even Russian materials and blue sea materials are not as good as eyes. These mountains have been dug in a mess. In addition, digging jade in the mountains also takes some risks. You don't have to take a bath for almost a month, just drink snow water, eat biscuits and beef. Life is hard and easy to fall to death.

Three sins: excessive exploitation

There are countless water conservancy projects along the Bailong River. According to Zhouqu netizens, from Guangyuan, Sichuan in the downstream to Wenxian and Zhouqu in the upstream, there are countless cascade hydropower dams and several mining areas in a river, and more than half of the already narrow river surface is filled with muck. There are countless excavators and trucks digging gold and sand in the river, and the whole Bailong River is yellower than the Yellow River.

Where is "Longshang Jiangnan"

Jiuzhaigou in Sichuan and Zhouqu County in Gansu are separated by only one mountain. Jiuzhaigou has beautiful scenery, which makes many people who have been there linger. However, in Zhouqu, Gansu, which is about 60 kilometers away in a straight line, it is a completely different scene. The mountains are not green and the water is not clear.

The reporter found a car from Jiuzhaigou to Zhouqu. Although the price is not low, many drivers are still unwilling to run. When asked about the reason, they almost unanimously answered "debris flow". From Jiuzhai to Zhouqu, you need to bypass more than 300 kilometers of mountain roads. Many places along this road are very dangerous areas with frequent mudslides. The reporter saw many traces left by landslides or mudslides along the way, and some sections had to be bypassed.

Gannan area, known as "Longshang Jiangnan", has a pleasant climate and beautiful ecology, which has always made Gannan people proud. However, in Zhouqu County after the mudslide, the reporter could not connect his scene with "Longshang Jiangnan". The devastated city and the devastated mountains even the local residents bluntly said "terrible".

In recent years, Gannan area has become a geological disaster-prone area, and many Panshan highways have been diverted or reinforced. Whenever the rainy season comes, many drivers are reluctant to run that endless mountain road again. Zhouqu county is also plagued by disasters. Zhouqu County, at the end of the 2008 Wenchuan earthquake, was one of the hardest hit areas. Many Zhouqu residents said that this rare mudslide in history was related to the earthquake.

The resource advantages of Zhouqu are mainly hydropower and minerals. How to develop these two resources and how to protect the ecological environment has always been controversial. Bailong River, which flows through Zhouqu County, has built many hydropower projects in recent years, which is also considered to be related to this mudslide disaster. The wood materials produced in Zhouqu are very good, and it is one of the main distribution areas of natural timber forests in Gansu Province. Whether debris flow is related to over-exploitation of forestry resources also makes the outside world full of doubts. All kinds of gold, iron and coal mines distributed in mountainous areas not only bring economic benefits to Zhouqu, but also inevitably cause certain soil erosion.

The painful lesson has been learned, and it is time to seriously consider which is more important and what to do in the future.