土壤水亏缺及杨树遮荫等其它原因造成复合系统农作物减产趋于严重，其中林龄3年的杨农复合系统的小麦玉米产量减产平均达到35%。
The production of crops in agroforestry decreased seriously because of lacking of soil water and illumination and so on, production of wheat and corn in 3 years agroforestry system decreased by 35%.
杨紫烨和托马斯•列农的纪录短片《仇岗卫士》记录了中国东部的一场环境行动，山姆•吉尔采访了两位制作人。
The Warriors of Qiugang, a new video report by Ruby Yang and Thomas Lennon, documents an environmental campaign in eastern China. Sam Geall spoke to the filmmakers.
杨紫烨和托马斯•列农的纪录短片《仇岗卫士》记录了中国东部的一场环境行动，山姆•吉尔采访了两位制作人。
The Warriors of Qiugang, a new video report by Ruby Yang and Thomas Lennon, documents an environmental campaign in eastern China. Sam Geall spoke to the filmmakers.
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