中美俄水资源对比：俄超27万亿m³，美国2.95万亿m³，中国多少？

Group 1: Water Resources Overview - Russia has abundant water resources, with a total annual runoff of 4.31 trillion cubic meters, supported by major rivers like the Volga and Yenisei [1][3] - The United States has a total water resource of 2.95 trillion cubic meters, with significant contributions from the Great Lakes and a renewable internal supply of 1.91 trillion cubic meters [5][7] - China has 2.57 trillion cubic meters of water resources, with a renewable internal supply of 2.81 trillion cubic meters, ranking sixth globally [9][11] Group 2: Water Management and Infrastructure - Russia faces challenges with aging infrastructure, with a pipeline leakage rate exceeding 15%, and plans to allocate funds in 2024 to improve water networks [3][15] - The U.S. has a strict water rights trading market, with farmers in drought areas buying water rights, and California continuing water restrictions into 2024 [7][15] - China has implemented the South-to-North Water Diversion Project, which has transferred over 60 billion cubic meters of water by 2024, stabilizing water supply for major cities [11][15] Group 3: Economic Impact of Water Resources - Russia's economy is resource-driven, with hydropower accounting for 27% of renewable energy, but fossil fuels remain dominant [13] - The U.S. modern agriculture relies heavily on water for exports, with a projected grain output of 400 million tons in 2024 [13][15] - China's water scarcity drives innovation in water-saving agriculture, with a projected 1% increase in grain production in 2024 [15][18] Group 4: Technological Innovations and Environmental Protection - China is focusing on water-saving technologies, with a target of 50% penetration of water-saving devices by 2024 [18] - Russia is revising water laws to enhance protection of water resources, particularly around Lake Baikal, with increased penalties for pollution [15][19] - The U.S. Environmental Protection Agency (EPA) is actively enforcing regulations, with a projected $5 billion in penalties for polluting companies in 2024 [15]