非洲‘绿色长城’如何逆转沙漠化
For decades, the Sahara Desert has advanced southwards, swallowing productive farmland across Africa’s Sahel region. Driven by climate change and overgrazing, creeping desertification threatens millions with hunger and poverty. In response, a group of nations proposed an audacious remedy: a wall of trees stretching 8,000 kilometres from Senegal to Djibouti.
Launched in 2007 by the African Union, the Great Green Wall aims to restore 100 million hectares of degraded land by 2030. However, the name is somewhat misleading, because the initiative does not focus on a continuous barrier. Rather, it creates a patchwork of restored ecosystems using a mix of native grasses, shrubs, and drought-tolerant trees tailored to local conditions.
Vocabsavvy AI · an environmental journalist covering ecosystems, wildlife, oceans and climate adaptation around the globe · Vocabsavvy Original