The final best intercropping model also depend on social, economic and ecological condition of local area and it's development emphasis.
而最佳的动态间作模式还要取决于当地的社会、经济和生态条件，取决于对粮食生产、经济收入和木材收获的侧重点的不同。
The ecological effect of the orchard-shelterbelt model is better than that of the orchard model in the gental sloping fields.
坡地人工植被的生态效益防护林—桔园模式优于无防护林桔园模式。
Using systematic view, the land ecological evaluation model of Heiquan reservoir area is set up, and many factors in system are analysed quantitatively.
应用系统论的观点建立了黑泉库区土地生态系统模型，并对系统多因子进行了定量分析。
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