Study on Hyperspectral Response of Carex cinerascens Kukentha to the Compound Pollution of Cu, Pb an

来源 :The 17th International Conference on Heavy Metals in the Env | 被引量 : 0次 | 上传用户:the4eye
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  To connect hyperspectral remote sensing technology and monitor of heavy metal pollution in wetland,a field experiment was taken to study hyperspectral response of Carex cinerascens Kukenth(C.cinerascens),a dominant plant in Poyang lake wetland,to the Compound Pollution of Cu,Pb and Zn.The results showed that: For the Cu and Pb compound pollution,we designed 5 treatments(CK,Cu100/Pb400,Cu100/Pb800,Cu200/Pb400 and Cu200/Pb600 mg/kg).The results showed that: except the Red Edge slope and R750-1250nm with the addition of compound metals have significant negative correlation,the other spectral parameters were not significantly correlated.For the Cu and Zn compound pollution,we designed 5 treatments as follows: CK,Cu100/Zn400,Cu 200/Zn200,Cu 200/Zn400 and Cu200/Zn600(mg/kg).The research results showed that: the Blue Valley depth,Red Valley depth,Red Edge slope and NDVI705 index with the addition of compound concentration had significantly negative correlation,while the Green Peak value had a significant positive correlation during growing season.For the Zn and Pb compound pollution,we designed three treatments : CK,Zn400/Pb400 and Zn600/Pb600(mg/kg).The analysis results showed that: the Red Edge slope,Blue Valley depth and Red Valley depth with the combined metals concentration were positively correlated,but it showed a significant negative correlation with the Green Peak value,Red Edge peak value,NDVI705 and R750-1250.For the combined pollution of Cu,Pb and Zn,we designed the CK,Cu100/Pb200/Zn200,Cu100/Pb400/Zn800,Cu100/Pb600/Zn600,Cu200/Pb200/Zn200,Cu200/Pb200/Zn600 and Cu200/Pb400/Zn600(mg/kg)treatments,the results showed that all the monitoring spectral indices had no significant correlation with the concentration of added compound three metals in growing season.
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