A computer simulation of stemflow process Economic Benefit Analysis of 28-year-old Mytilaria laosensis Plantations in Daqingshan, Guangxi of China Ecological benefit assessment of urban vegetations by remote sensing and GIS Review of research fields and research methods of agroecology in recent years System analysis of typical models of eoo-agricultural construction in Taihang Piedmont--A case study from Luancheng County of Hebei Produce Relationship Between air Pollution and the Decline of Cunninghamia lanceolata (Lamb.) Hook. in Dasheng Mountain, Hunan The system analysis and countermeasures research on eco-agriculture development of Shandong Province THE ANALSIS OF DONGSHAN ORCHARD ECOSYSTEM AND OPTIMIZING DESIGN A review of studies using ecological network analysis Relationship between Planting Density and Tree Growth Process of Betula alnoides Mid-young Plantations in Pingxiang, Guangxi Dynamic characteristics of nutrient elements in Castanea henryi plantation at beginning of fructification and its simulation INTEGRATED FORECASTING FOR THE DEMAND-AND-SUPPLY SYSTEM OF CHINESE TIMBER MARKET Effects of different K fertilizers on the yield and the contents of amino acids of Pleurotus tuber-regium,s sclerotium