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According to calculation results of ocean chlorophyll concentration based on SeaWiFS data by SeaBAM model and synchronous ship-measured data, this research set up an improved model for Cas...
Yulin district is located in the transitional zone between Mu Us Desert and Loess Plateau of northern Shaanxi Province, thus it is particularly vulnerable to degradation due to its fragile...
Threshold is a limit and marginal point when a qualitative change takes place. Since threshold principle was firstly used in landform research by S.A.Schumm in the 1970s, the quantitative research on ...
Process and mechanism of arable land change in Hebei Province during the past 50 years
XU Yue-qing
(Institute of Geographical Sciences and Natural Resources Research, CAS, Beijing 10010...