What is the ecological red line? Ecological red line is defined as the special protection area in order to maintain national or regional ecological security and sustainable development according to the protection needs of ecosystem integrity and connectivity. Brief introduction The ecological red line is mainly divided into three regions: the important ecological function area, the sensitive area of terrestrial and marine ecological environment, and the fragile area. Content The first is the protection of the red line of important ecological functional areas. Refers to water conservation areas, soil and water conservation, wind and sand, flood regulation and so on. Urban development needs safe and healthy water sources, which is a safe line of ecological protection for economic society and the bottom line of national ecological security. It can fundamentally solve the contradiction between resource development and ecological protection in the process of economic development. The second is the ecological fragile areas or sensitive areas to protect the red line. Namely important ecological barrier red line, may provide the ecological barrier for the city, the urban agglomeration. The establishment of this red line can mitigate the impact and risks of the outside world on urban ecology. Shaoguan, Guangdong is an important ecological barrier in the Pearl River Delta. The third is the red line of biodiversity conservation areas. This is the red line for biodiversity conservation in China, providing the minimum survival area for protected species. Red line is the bottom line, if re-development will endanger the safety of the population, very urgent. Policy interpretation Hebei Province has issued the "Planning of Hebei Province for the Construction of Beijing-Tianjin-Hebei Ecological Environment support area 2016-2020". In key ecological functional areas, ecologically sensitive areas and fragile areas, and other areas, such as forests, oceans, wetlands, rivers and lakes, etc., the red lines for ecological protection are delineated. Provide rigid guarantee for regional sustainable development. Hebei Province has stipulated that, within the scope of the red line area of ecological protection, industrial "access list" management should be carried out, all kinds of ecological land should be strictly protected, ecological space should be restored, and strict ecological environmental protection measures should be issued. In the process of marine environmental protection, the Marine Ecological Red Line of Hebei Province was specially issued, and the control measures were formulated for the eight major marine areas, such as natural shoreline, marine protected areas and important estuarine ecosystems. With regard to the protection of ecological red lines in river and lake waters, Hebei Province requires that any activities that hinder the safety of river course flood discharge be prohibited within the waterfront control line, and that the use of the main flood discharge and leachate channel shoreline be completed in 2020; at the same time, The 1.05 million hectare grasslands in Zhangcheng Bashang area and 450000 ha grassland in Beijing and Tianjin area were classified as basic grasslands. At the same time, the ecological compensation mechanism of all rivers in the province is carried out, and the water quality of the cross section of the seven major rivers in the province is examined, and the withholding policy of ecological compensation funds is tried out in the cities and counties that cause the water pollutants to exceed the standard.