两口径基建为何背离？

Group 1 - The article discusses two different measures of infrastructure investment: narrow infrastructure (excluding electricity) and broad infrastructure (including electricity, heat, gas, and water supply) [2][8] - The differences between the two measures include the inclusion of the electricity sector in broad infrastructure, while narrow infrastructure includes telecommunications and internet services [2][8] - In September, narrow infrastructure showed a slight improvement with a growth rate of -4.6%, while broad infrastructure declined further to -8% [3][11] Group 2 - The divergence in growth rates between the two measures can be attributed to several factors, including the performance of the electricity, heat, gas, and water sectors, which had a growth rate of -2% in September [11][12] - The internet and related services sector, which is included in narrow infrastructure but not in broad infrastructure, experienced a significant growth of 20.6% in the first three quarters [11][12] - The warehousing sector, which is included in broad infrastructure but not in narrow infrastructure, saw a sharp decline in investment from 4% to -23%, contributing to the weakness in broad infrastructure [12]