通过这两幅图片，我们可以看到，河流源头的生态系统要比河流流到图桑市的时候，要健康的多。
You can see by these two pictures that the riparian system around the river at the origin is lot healthier than the riparian system around the river in Tucson.
一幅相对完整的风景地帮助保持了生态系统的相对完整，让动物在他们吃的东西和怎样迁移上保持适应性。
A relatively intact landscape has helped keep ecosystems intact and let animals retain flexibility in what they eat and how they migrate.
根据果粮间作生态系统的光照分布规律可以确定合理的栽植方式和合理的树形、树高、冠幅等指标。
According to the light distribution law of the fruit-crop planting ecosystem the reasonable planting way and the reasonable shape of tree, the height of tree, the range of crown and other index ca...
根据果粮间作生态系统的光照分布规律可以确定合理的栽植方式和合理的树形、树高、冠幅等指标。
According to the light distribution law of the fruit-crop planting ecosystem the reasonable planting way and the reasonable shape of tree, the height of tree, the range of crown and other index ca...
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