2.0.6.1

The next experiment involved disturbing the system and observing any changes that occurred. One winter, the investigators cut down all trees and shrubs in one valley (the experimental site),left them where they fell, and sprayed with herbicides to prevent the regrowth of vegetation. Then they compared the inflow and outflow of water and nutrients in this modified experimental site with those in the control site for 3 years.

下一個實驗包含擾亂系統並且觀察發生的任何變化。 某一個冬天， 那些調查者砍倒全部樹和在一個山谷(實驗場所)的灌木，再從他們倒下的地方將其移除，並且用鋤草劑噴防止植物的再生長。然後，他們比較在修改並受控制3年的實驗站的水的循環和營養物。