Chinese Caterpillar Fungus in China: Current Distribution, Trading, and Futures Under Climate Change and Overexploitation

Summary

This research examines how climate change and overharvesting are threatening the Chinese caterpillar fungus, a valuable medicinal mushroom found in the Himalayan region. The study predicts that warming temperatures will significantly reduce suitable habitats for this species in coming decades, while increasing demand and overharvesting are already causing population declines. Impact on everyday life: • Rising prices of traditional medicines as valuable species like caterpillar fungus become scarcer • Potential loss of traditional medicinal treatments that have shown promise for various diseases • Economic impacts on local communities who rely on harvesting for income • Demonstrates how climate change directly affects natural resources and traditional practices • Highlights need for sustainable management of valuable medicinal species

Background

Chinese caterpillar fungus (Ophiocordyceps sinensis) is a precious traditional medicine distributed mainly on the Qinghai-Tibetan Plateau. Due to its medicinal values, it has become one of the most valuable biological commodities traded worldwide. However, its habitat has changed profoundly in recent years under global warming and anthropogenic pressures, resulting in sharp population declines.

Objective

This study aimed to estimate the potential distribution of caterpillar fungus using MaxEnt modeling under current climate conditions and examine future distributions under different climate change scenarios. The research also analyzed the integrated effects of climate impact, trading, and overexploitation.

Results

The distribution patterns under RCP 2.6 showed no obvious changes. However, significant habitat shrinkage was observed across suitable areas in Tianshan, Kunlun Mountains, and southwestern QTP under RCP 4.5, 6.0 and 8.5 scenarios. Exports have decreased drastically in recent years. Guangzhou and Hong Kong emerged as two major international import and consumption centers. The species showed preference for elevations of 979-6043m, with high precipitation (annual 21-1542mm) and low temperatures (mean winter temperature -22.8°C to 8.6°C).

Conclusion

The sustainability of caterpillar fungus is threatened by combined pressures of climate change and overexploitation. The study predicts significant habitat shrinkage under most future climate scenarios. A strict and effective regulation system and systematic management plan for collection and trade are urgently needed to protect this species in the Qinghai-Tibetan Plateau.
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