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本文通过对四川盆地北部防护林区岩土系统研究，从物质、能量、信息流角度论证了岩土演化的综合效应。结果表明：风化岩体是植被的信源体，主要反映为物源差异；土壤容库系统的筛检作用制约着物、能流动态，使地下馈供信息流与植被需求信息流常难以匹配；植被作为信宿体，一方面有主动吸聚作用，同时其反馈信息也影响从ＲＷ→ＳＣ→Ｐ物能流。以岩土系统为主的地质背景潜资源综合作用使不同岩土区对不同植被类型呈优势区。
Through the study of geotechnical system in the northern shelterbelt in Sichuan Basin, this paper demonstrates the synthetic effect of geotechnical evolution from the perspectives of material, energy and information flow. The results show that the weathering rock mass is the source body of vegetation, which is mainly reflected as the difference of provenance. The screening of soil bulk storage system restricts the flow of material and fluid, making it difficult to match the information flow between underground feeding and vegetation demand. Vegetation as a letter body, on the one hand, has an active syngas effect, while its feedback information also affects the energy flow from RW → SC → P. The combined effect of potential resources of geologic background, which is dominated by geotechnical system, makes different geotechnical areas dominated by different vegetation types.