The construction of important ecological security barriers in northern my country should focus on promoting the construction of a national park system, implementing ecosystem protection and restoration projects, and large-scale greening.

1. Construct a national park system: Construct a natural reserve system with national parks as the main body, aiming to protect the integrity of my country's rare and endangered species and ecosystems, and strengthen ecological environment protection and management.

2. Implement ecosystem protection and restoration projects: Implement major ecosystem protection and restoration projects to protect and restore important ecosystems in my country, such as wetlands, forests, grasslands, etc.

3. Large-scale greening: The large-scale greening action of the whole party and the whole country aims to promote the whole society to actively participate in greening actions through extensive mobilization and participation. Through afforestation, urban greening, desertification control and other means, we will increase vegetation coverage, improve the ecological environment, improve air quality, and mitigate the impact of climate change on the environment.

To build an important ecological security barrier in northern my country, we should do the following:

1. Give full play to the ecology of the Yellow River Basin, including the Qinghai-Tibet Plateau, the Loess Plateau, the northern sand control belt, and the Yellow River Estuary Coastal Zone. The comprehensive advantages of the barrier are based on promoting a benign and sustainable cycle of the Yellow River ecosystem and enhancing the quality and efficiency of the ecological barrier, and follow the principles of natural ecology.

2. Use systems engineering methods to comprehensively improve the water source conservation capacity of the "Chinese Water Tower" in the upstream, the water and soil conservation level in the midstream, and the stability of ecosystems such as downstream wetlands, and accelerate the construction of a solid, stable and supportive national ecological security barrier. , providing a demonstration for the construction of ecological civilization in underdeveloped and ecologically fragile areas.

3. Insist on relying on and mobilizing the masses, promote the desert control experience of Kubuqi, Mu Us, Babu Sand Forest Farm and other places, carry out large-scale desert prevention and control, innovate desert management models, and build a solid foundation for desert control in the north. bring. Establish sandy land enclosure protection zones in suitable areas to scientifically consolidate and control sand and prevent sand.

4. Give full play to the ecological barrier of the main stream of the Yellow River and the sand-blocking role of the Qilian Mountains, Liupan Mountains, Helan Mountains, Yinshan Mountains and other mountain systems, implement edge-locking windbreak and sand-fixation projects, strengthen the construction of ecological barriers in the edge areas of major sandy areas, and vigorously control mobile sand dunes . Promote comprehensive management of water and soil erosion in the upstream loess plateau areas where water and wind erosion occur, as well as where agriculture and animal husbandry intersect.