宏观主题研究：基建投资增速缘何下滑，会持续多久？

Investment Trends - Infrastructure investment growth has declined significantly, with a drop of 2.6 percentage points compared to the recent peak in March, and a broader decline of 4.2 percentage points in general infrastructure investment growth[1] - Fixed asset investment growth fell to 1.6% in July, the lowest since October 2020, while infrastructure investment growth decreased to 3.2%[2] Government Support - Despite the decline in investment growth, government funding support for infrastructure has increased, with local governments issuing 3.5 trillion yuan in new special bonds and ultra-long-term treasury bonds in the first seven months, compared to 2.2 trillion yuan in the same period last year[1] - A funding gap of 616.8 billion yuan is expected in the remaining government bond issuance from August to December compared to last year, prompting predictions of additional fiscal support of 0.5 to 1.0 trillion yuan by the end of September[1][21] Sector Performance - The rapid slowdown in investment growth in public facilities management and ecological environment sectors is a major factor in the overall decline, with public facilities management dropping from 4.9% in April to 0.5% in July, and ecological environment investment falling from 8.5% to -5.4%[4] - Transportation, storage, and postal services showed relatively stable investment growth, with a slight decline in July attributed to extreme weather conditions[6] Future Outlook - Infrastructure investment growth is expected to rebound to 4.5% for the year, up from 3.2% in the first seven months, aided by the low base effect from the previous year and ongoing major projects[29] - The anticipated increase in government bond issuance and new policy financial tools are expected to support infrastructure investment in the latter half of the year[21][29]