在很大程度上，格里森反对顶级群落和生物群系的论点用来反驳生态系统同样很有效。

Gleason's arguments against climax and biome are largely valid against ecosystems as well.

youdao

农业是在大自然中进行的；大自然里的生态系统中各种生物和活动相互影响，而粮食的生产正是处在这样的生态环境中。

Agriculture takes place in nature, among ecosystems of interacting organisms and activity, and crop production takes place within that ecosystem environment.

youdao

因为如果我们不是（最具有创造力的生物），我们将无法在未来的生态系统中提供多少价值，这可能会使我们存在的基础受到质疑。

Because if we aren't, we won't be providing much value in future ecosystems, and that may put in question the foundation for our existence.

youdao