[Study on the spectrum response of Brassica Campestris L leaf to the zinc pollution].
In the present paper, the spectrum response of Brassica Campestris L leaf to the stress of heavy metal zinc pollution was studied in three spectral rangess of the red edge position (680-740 nm), the visible spectrum (460-680 nm) and the near infrared spectrum (750-1000 nm). The results indicate that the Zn content in cabbage leaves increases and the chlorophyll level reduces with the increase in Zn concentration in soil. With the Zn content of Brassica Campestris L leaves increasing, the leaf spectral reflectivity in visible light (A1) and the range of red edge shift (S) ascends, the the leaf spectral reflectivity in the near infrared light (A2) decreases. The three indices of A1, A2 and S are fitted much linearly with the logarithm of zinc content in Brassica Campestris L leaves with the high squared regression coefficients of 0.942, 0.981 and 0.969 respectively. The regression models are reliable to estimate the zinc content in Brassica Campestris L leaves.
State Key Joint Laboratory of Environmental Simulation and Pollution Control, School of Environment, Beijing Normal University, Beijing 100875, China.
Si-Ning
SN
Chen
Xin-Hui
XH
Liu
Juan
J
Hou
Su-Hong
SH
Liu
Guang-Yu
GY
Chi
Bao-Shan
BS
Cui
Zhi-Feng
ZF
Yang
D001937:Brassica / Q000737:chemistry* / Q000378:metabolism; D002734:Chlorophyll / Q000032:analysis / Q000378:metabolism; D018515:Plant Leaves / Q000737:chemistry; D012989:Soil Pollutants / Q000032:analysis* / Q000378:metabolism; D019265:Spectroscopy, Near-Infrared; D015032:Zinc / Q000032:analysis* / Q000378:metabolism
D012989:Soil Pollutants; D002734:Chlorophyll; D015032:Zinc