Suaeda salsa is familiar in soil salinization area.Through studying Suaeda salsa community characteristics,soil chemical properties can be inferred.Suaeda salsa spectra and soil chemical property data were gotten through measuring seventeen paired-samples,which were used to study field spectra of Suaeda salsa in response to changes of soil chemical properties.The results showed that second derivative spectrum of 1 121 nm could be used to indicate changes of soil organic matter and soil total nitrogen,and se...