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In southwestern China, Yunnan pines (Pinus yunnanensis) have been extensively cultivated on barren hills for reforestation and ecological engineering. The objective of this work is to study the influences of slope gradient on anchorage of root systems of P. yunnanensis. Pulling experiments were carried out at low (5–6°), moderate (25–26°) and high gradient (42–43°) by using selected 15-year-old P...
In southwestern China, Vitex negundo L. has been widely applied on rocky slopes for slope eco-engineering (SEE). This work studied the anchorage mechanism of root system of 8-year-old V. negundo L. plants on severely, moderately, or weakly weathered rocky slopes through a pullout experiment with winch. On severely and moderately weathered rocky slopes, more secondary laterals embedded in the rock...
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