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首页> 外文期刊>International journal of remote sensing >Remote sensing research in biogeochemistry of the Hetai gold deposit, Guangdong Province, China
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Remote sensing research in biogeochemistry of the Hetai gold deposit, Guangdong Province, China

机译：广东省河台市金矿床生物地球化学遥感研究

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The vegetation has been poisoned by Au in the Hetai gold deposit region, Guangdong Province, China. The Au content in the leaves of plants is up to 269 times higher than that of the abundance, the chlorophyll content is 10-30% lower than that of the vegetation in metamorphic terrains, and 10-20% higher than that in granite terrains. The carotenoid content is 10-44% lower than the background value. The Au content in the chlorophyll is up to 97 times higher than the abundance; the Fe and Mg of the pigment is 60% and 1.4-8.6% of the abundance. The water content in leaves is 10-20% lower than the background value. The temperature of the leaf surface is 8% lower than the background value. Cells of leaves are deformed and broken. The leaf surface shows yellow or dark green spots. Spectral reflectance of the leaf surface is 5-30% higher than the background value; the spectral shape has shifted 5-15 nm to the short wavelength in the 300-800 nm band, and to the long wavelength in the 800-2500 nm band. The greyscale values of the canopy in images from Landsat Thematic (TM) and Airborne Imaging Scanner (AIS) are 10-100% higher than the background value. On Landsat TM and AIS false colour images, plants poisoned by Au display a yellow colour, which distinguishes them from background plants. According to the spectral and image features of Au biogeochemical effects, a gold deposit information system has been constructed, and thus more than 20 gold deposit target areas have been identified rapidly, economically and accurately in Northeast China, Northwest China, South China and the Qinling mountain range in China, which is covered extensively by vegetation.
机译：在中国广东省河台市金矿区，该植被已被金中毒。植物叶片中的Au含量比丰度高出269倍，叶绿素含量比变质地区的植被低10-30％，比花岗岩地区的植物高10-20％。类胡萝卜素含量比背景值低10-44％。叶绿素中的Au含量比丰度高出97倍；颜料中的铁和镁分别为丰度的60％和1.4-8.6％。叶片中的水分含量比背景值低10-20％。叶表面温度比背景温度低8％。叶子的细胞变形并破碎。叶表面显示黄色或深绿色斑点。叶表面的光谱反射率比背景值高5-30％；光谱形状已经在300-800 nm波段的短波长和在800-2500 nm波段的长波长偏移了5-15 nm。来自Landsat Thematic（TM）和机载成像扫描仪（AIS）的图像中冠层的灰度值比背景值高10-100％。在Landsat TM和AIS虚假彩色图像上，被Au中毒的植物显示黄色，这使它们与背景植物区分开。根据金的生物地球化学效应的光谱和图像特征，构建了金矿信息系统，从而在东北，西北，华南和秦岭地区快速，经济，准确地确定了20多个金矿目标区域。中国的山脉，被植被广泛覆盖。

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