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STUDIES ON THE TYPE CLASSIFICATION OF BACKBONE FOREST STRIP FOR CASUARINA EQUISETIFOLIA AND KEY TECHNIQUES FOR ITS REGENERATION AFFORESTATION Community Characteristics in Different Patterns of Schima superba Biological Fire-Protection Forest Belts Effects of Highway Forest Belts on Heavy Metals Pollution from Tail Gas of Vehicles Afforestation with Alnus tinctoria to build fire prevention forest belt STUDIES ON THE APPLIED EFFECTIENESS OF BIOLOGICAL FIRE PREVENTION NETWORK OF SCHIMA Preliminary research on habitat selection of Chrysopa septempunctata in farmland in central Hebei Province SELECTION OF FOREST BELTS AND MULTIPLE CROPPING SUBSYSTEMS IN THE AGROFORESTRY SYSTEM ON SLOPE IN THE HILLY REGION OF SICHUAN BASIN THE DEVELOPMENT OF FIRE-RESISTANCE FOREST BELTS RESEARCH STUDIES ON FIRE RESISTANT TREE SPECIES OF DAGUI MOUNTAINS,GUANGXI ZHUANG AUTONOMOUS REGION