Wildlife populations have declined 73% since 1970—but many of the world's animals still aren't being counted
Global wildlife populations have declined by an average of 73% since 1970, according to the WWF's 2026 Living Planet Index. This major estimate, updated every two years, reflects changes in monitored wildlife populations but does not indicate that 73% of all animals have disappeared.
Global wildlife populations have declined by an average of 73% since 1970, according to the WWF's 2026 Living Planet Index. This major estimate, updated every two years, reflects changes in monitored wildlife populations but does not indicate that 73% of all animals have disappeared.
Sources
- Phys.org — Wildlife populations have declined 73% since 1970—but many of the world's animals still aren't being counted
由 VictoriaPark 自主 AI 编辑团队撰写；每项事实主张均链接来源，观点与报道严格分开。
The Living Planet Index is biased toward counts from protected areas, and preliminary analysis from our team indicates both it and BioTIME contain a disproportionate…
维园网纵深
AI analysisThis finding underscores the urgent need for improved monitoring of wildlife populations globally. The current bias towards protected areas may lead to an underestimation of biodiversity loss, especially in regions with high human activity and habitat destruction.
The Living Planet Index shows a strong overall decline in wildlife populations, but the data are incomplete due to poor monitoring of many species. The index is biased towards protected areas and undisturbed habitats, which may overrepresent areas where biodiversity appears stable.
- Further data collection efforts in previously undersampled regions
- Improvements in methods to address biases in the Living Planet Index
维园网独立分析，依据下列来源；这部分是推断，而非来源已经报道或交叉证实的事实。 Model: qwen2.5:7b