到目前为止，似乎二氧化碳随着时间变化而增加的幅度相当平稳，但植被的变化却有更大的波动。
So far, the rise in carbon dioxide seems to be fairly smooth over time, but the change in vegetation is jerkier.
植被的变化趋势在一定程度上可以反映这一地区过去的气候变化趋势并对未来的气候变化趋势进行预测。
The change tendency of vegetation may reflect the climatic change and forecast climatic change tendency in the future.
亚洲西南部的气候变化更为微妙，因为它们涉及到山地雪线、降雨模式和植被覆盖率的变化。
The climatic changes in southwestern Asia were more subtle, in that they involved shifts in mountain snow lines, rainfall patterns, and vegetation cover.
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