The data utilized in this analysis consisted of extraterrestrial radiation,global radiation,diffuse radiation,total cloud cover and relative sunshine.The annual
Studies indicate that the climate has experienced a dramatic change in the Heihe River Basin with scope of temperature rise reaching 0.5-1 .1℃ in the 1990s com
The probaility of crane living in reedy wetlands can reach 100%, at the same time,the area of reed ,the water level and adjacent water area are main factors whi
According to differences in vegetation types and their coverage,combining the latest research ,using theory and method on the value of vegetation ecosystem serv