我国防御沙尘暴的主防线，现在怎样了？

Core Viewpoint - The "Three North" project in Inner Mongolia represents a significant ecological transformation, turning desert areas into green zones and enhancing local livelihoods through innovative environmental management practices [1][13]. Group 1: Ecological Transformation - Inner Mongolia, covering 12% of China's land, plays a crucial role in combating desertification and ensuring ecological security for regions like Beijing and Tianjin [1]. - The "Three North" project has successfully transformed areas from "sand encroachment" to "green advancement," showcasing a commitment to ecological restoration [1][2]. - The implementation of a "sand control + photovoltaic" model has led to a 30% reduction in desertification severity over 2.2 million acres [2]. Group 2: Economic Benefits - The integration of ecological restoration with economic development has resulted in increased incomes for local herders, with average annual income rising by 15,000 yuan per person [3]. - The establishment of ecological economic forests has generated significant agricultural outputs, such as 100,000 pounds of jujube fruit annually from newly planted areas [2]. - The promotion of sustainable practices, such as the cultivation of medicinal herbs and eco-tourism, has led to a 40% increase in income for local households [3]. Group 3: Technological Innovations - The shift from manual labor to mechanized operations in desert management has improved efficiency, with new machines achieving up to 20 times the productivity of traditional methods [7][9]. - The use of smart irrigation systems and real-time monitoring has transformed water management in agricultural practices, enhancing crop yields and reducing water wastage [5][6]. - The development of a "sky-ground integrated" monitoring system allows for precise tracking of ecological restoration efforts, ensuring effective management of resources [9]. Group 4: Sustainable Practices in Pastoralism - The transition from overgrazing to balanced grazing practices has improved grassland health, with vegetation coverage increasing by 7% over five years [12]. - The adoption of modern ranching techniques, such as rotational grazing and reduced livestock numbers, has led to significant cost savings and improved pasture quality [10][11]. - The establishment of modern pastoral zones has enabled 30% of herders to increase their income through sustainable livestock management [12].