Regional programming and development models for touring agriculture in hilly an of Taihang Mountains- A case study from Hebei Province Change of Soil CH4 Fluxes of Robinia pseudoacacia Stand During Non-growing Season and the Impact Factors Comparative Floristic Composition Study of Coastal Hilly Areas in Southern and Northern Hainan Island Effects of different governance patterns of small watershed on fractal features of soil micro-aggregates in the hilly areas of central Sichuan Basin Application of object-oriented image analysis to land-cover classification in hilly areas Studies on Floristics of Seed Plants in Coastal Hilly Areas of Southern Hainan Island Experiment on Introduced Cool-Season Forage Species in the Hilly Areas of Sichuan Province(A Brief Research Report)