Multi-source satellite remote sensing technology can be used to monitor the distribution and growth status of aquatic plant species on a large scale.In this paper,C,aoyou Lake was selected as the research area.Aquatic medicine material Euryaleferox Salisb was used as the research object.The spectral characteristics of plants in Euryaleferox Salisb growing area were analyzed by ASD portable spectrometer and the remote sensing image of Pléiades and GF-1.The spectral range of species was obtained.And the decision tree algorithm model was constructed,which were used to extract the information of Euryale ferox Salisb from remote sensing images.Through verification,the results showed that the accuracy of comprehensive classification was 83％.It was concluded that multi-source satellite remote sensing image and GIS spatial analysis technology can accurately reflect the area and distribution of aquatic medicine material Euryale ferox Salisb.

OBJECTIVE: To evaluate the treatment and prognosis of sinonasal mucosal melanoma (SMM). METHOD: Clinicopathological data of SMM patients from January 1976 to December 2005 were analyzed retrospectively. Survival analysis was performed and Kaplan-Meier analysis was used to compare the effect of clinicopathological factors on survival using SPSS 18.0 software. A Cox model was applied for multivariate analysis. RESULT: The 3-year and 5-year overall survival (OS) rates of 68 cases of SMM were 36.1% and 29.4%, respectively. The 3-year and 5-year OS of patients who underwent surgery or biotherapy were significantly higher than that of patients who underwent other therapeutic regimens without surgery or without biotherapy, respectively. Multivariate analysis showed the patients with distant metastasis at first present or residual/recurrence had a worse prognosis than that without distant metastasis or residual/recurrence, respectively. Surgery and biotherapy were effective treatments for SMM. CONCLUSION SMM has a poor prognosis, especially in the patients with distant metastasis or residual/recurrence. Surgery or biotherapy may improve the prognosis of patients with SMM.
Adolescent ; Adult ; Aged ; Child ; Child, Preschool ; Female ; Humans ; Male ; Melanoma ; diagnosis ; therapy ; Middle Aged ; Nasal Mucosa ; Nose Neoplasms ; diagnosis ; therapy ; Prognosis ; Retrospective Studies ; Treatment Outcome ; Young Adult