因产量上升和向液化天然气出口厂的天然气流量减少，美国天然气期货跌幅扩大至5%。

Core Point - The article highlights a significant decline in U.S. natural gas futures, which have dropped by 5% due to increased production and reduced gas flow to liquefied natural gas (LNG) export facilities [1] Group 1 - U.S. natural gas futures have experienced a notable decrease of 5% [1] - The decline is attributed to a rise in natural gas production [1] - There has been a reduction in the flow of natural gas to LNG export facilities [1]