ecological gradient

例句：

1. 1.The study of ecological gradients is crucial for understanding the impact of climate change on ecosystems.
   研究生态梯度对于理解气候变化对生态系统的影响至关重要。
2. 2. The researcher found that the ecological gradient was responsible for the species distribution in the region.
   研究者发现，生态梯度是该地区物种分布的原因。
3. 3.The ecological gradient is a critical factor in determining the distribution of plant and animal species.
   生态梯度是决定植物和动物物种分布的关键因素。