A new species,Spiraea cudidaghense(sect.Spiraeoideae,Rosaceae),is described and illustrated with diagnostic characters and taxonomic comments.Its characteristic
Although afforestation of farmlands has been proposed as an effective method of carbon(C)sequestration,there remain uncertainties that deter us from developing
We We evaluated the spatial and temporal patterns of forest fires in two fire seasons (March to June and September to November) from 1996 to 2010 in Jilin Provi
The critical environment is one of the main insufficient to positioning. Geodetic observing systems such as the global positioning system(GPS) and the global navigation satellite systems(GNSS) are rou