2000多年后，我们为什么还要建“长城”

Core Insights - The Kubuqi Desert has undergone significant ecological restoration, transforming from a "sea of death" to a green oasis, with a governance rate of 80% over an area of approximately 2,900 square kilometers [1][2] - The region employs a "photovoltaic + ecological governance + organic agriculture + desert tourism" model, integrating solar energy with ecological restoration efforts [1] - By 2030, plans are in place to construct a 400-kilometer-long photovoltaic "Great Wall" to further combat desertification and protect the Yellow River [1] Group 1 - The Kubuqi Desert has been successfully managed, with 2,320 square kilometers restored and 100,000 acres of photovoltaic desertification control completed [1] - The largest photovoltaic power station in the region consists of 196,320 solar panels, utilizing a model that combines power generation with agricultural practices [1] - The ecological restoration has led to the cultivation of over 300 types of fruits and vegetables, with organic matter content exceeding 3% in the soil [2] Group 2 - The vegetation coverage in the Enggabei ecological demonstration area has reached 78%, with forest coverage at 41%, and biodiversity has increased from over 20 species to more than 600 [2] - A 15-kilometer by 10-kilometer green ecological barrier has been established between the Kubuqi Desert and the Yellow River, serving as a testament to the efforts in ecological improvement [2]