Smart use of trees and crops brings best yield
Cultivating crops—such as wheat, barley and rye—alongside rows of trees is a system of agroforestry that is known as "alley-cropping." It serves many functions: in addition to enhancing ecosystems and biodiversity, it can also counteract the negative effects of growing crops in treeless open land. The advantages of alley-cropping come from the interaction between trees and crops, resulting in improved soil quality, reduced wind erosion, enhanced nutrient cycling, and climate change mitigation through increased carbon capture.
该研究基于德国四个地点六年数据,提出树龄5年以上时春作物减产10%–35%、而冬作物全程不减产,可作为温带杨树间作区安排冬春作物的参考,但结论限于温带短轮伐杨树系统。