There is a significant interaction between environmental degradation and global climate change. Since the Industrial Revolution, the emissions of atmospheric pollutants caused by human activities have surged, with concentrations of greenhouse gases such as carbon dioxide and methane exceeding 150% of pre industrial levels. The "greenhouse blanket" effect formed by these gases has caused the Earth's surface temperature to rise by 0.74 ℃ over the past century, and the rate of warming is still accelerating. This warming trend directly changes atmospheric circulation patterns, and events such as the 2019 Amazon wildfires and the 2020 Australian wildfires are closely related to abnormally dry climate conditions. At the same time, the accelerated melting of polar ice caps causes global sea levels to rise by 3.7 millimeters per year, and island countries such as Maldives are facing a survival crisis due to the disappearance of their territories.

The water circulation system has also become disrupted due to environmental degradation. The eutrophication of water bodies caused by pollutants damages the ocean's ability to absorb carbon dioxide, while deforestation reduces 10 million hectares of carbon sink area annually, exacerbating the greenhouse effect. The data shows that the area of the global arid area has expanded by 40%, but the intensity of rainstorm has increased by 30% in the same period. This contradiction makes the flood in Pakistan and the drought in the Horn of Africa in 2023 appear at the same time. The imbalance of the climate system is also manifested at the biosphere level, with polar animals such as polar bears on the brink of extinction due to habitat loss, and coral bleaching destroying 50% of the world's coral ecosystems.

The impact of environmental degradation on climate has global characteristics. Air pollutants can spread up to 1000 kilometers away through circulation, and black carbon particles emitted by East Asian industries have even accelerated the melting of Arctic glaciers. This cross regional impact has led to difficulties in climate governance - even if Europe achieves carbon neutrality, the continued growth of emissions in Asia will still push global warming above the 2 ℃ threshold. Even more concerning is that feedback mechanisms such as methane released by permafrost melting may trigger irreversible climate changes, leading to a new state of imbalance in the Earth's climate system.