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  • Other Sources  (4)
  • 1
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    The changes in leaf reflectance of sugar maple (Acer saccharum Marsh) seedlings in response to heavy metal stress (1983)
    In:  Other Sources
    Details
    Publication Date: 2011-08-18
    Description: The effects of heavy metal stress on leaf reflectance of sugar maple seedlings (Acer saccharum Marsh) are examined. It is found that sugar maple seedlings treated with anomalous amounts of heavy metals in the rooting medium exhibited an increased leaf reflectance over the entire range of investigated wavelengths, from 475 to 1650 nm. These results conform to those of a previous investigation in the wavelengths from 475 to 660 nm, but tend to contradict the previous study in the near infrared wavelengths from 1000 to 1650 nm. The differences may possibly be due to different water regimes in the two investigations. Previously announced in STAR as N81-29729
    Keywords: LIFE SCIENCES (GENERAL)
    Type: International Journal of Remote Sensing (ISSN 0143-1161); 4; Jan
    Format: text
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  • 2
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    Effect of metal stress on the thermal infrared emission of soybeans: A greenhouse experiment - Possible utility in remote sensing (1989)
    In:  Other Sources
    Details
    Publication Date: 2011-08-19
    Description: Manganese-sensitive forest and manganese-tolerant lee soybean cultivars were subjected to differential manganese stress in loring soil in a greenhouse experiment. Leaf temperature measurements were made using thermistors for forest and lee. Manganese-stressed plants had higher leaf temperatures than control plants in both forest and lee. Results of this experiment have potential applications in metal stress detection using remote sensing thermal infrared data over large areas of vegetation. This technique can be useful in reconnaissance mineral exploration in densely-vegetated regions where conventional ground-based methods are of little help.
    Keywords: EARTH RESOURCES AND REMOTE SENSING
    Type: International Journal of Remote Sensing (ISSN 0143-1161); 10; 557-563
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  • 3
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    The changes in leaf reflectance of sugar maple seedlings (Acer saccharum Marsh) in response to heavy metal stress (1981)
    In:  CASI
    Details
    Publication Date: 2019-06-28
    Description: The effects of heavy metal stress on leaf reflectance of sugar maple seedlings (Acer saccharum Marsh) are examined. It is found that sugar maple seedlings treated with anomalous amounts of heavy metals in the rooting medium exhibited an increased leaf reflectance over the entire range of investigated wavelengths, from 475 to 1650 nm. These results conform to those of a previous investigation in the wavelengths from 475 to 660nm, but tend to contradict the previous study in the near infrared wavelengths from 1000 to 1650nm. The differences may possible be due to different water regimes in the two investigations.
    Keywords: LIFE SCIENCES (GENERAL)
    Type: NASA-TM-82150
    Format: application/pdf
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  • 4
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    Prototype of NASA's Global Precipitation Measurement Mission Ground Validation System (2007)
    In:  CASI
    Details
    Publication Date: 2019-08-13
    Description: NASA is developing a Ground Validation System (GVS) as one of its contributions to the Global Precipitation Mission (GPM). The GPM GVS provides an independent means for evaluation, diagnosis, and ultimately improvement of GPM spaceborne measurements and precipitation products. NASA's GPM GVS consists of three elements: field campaigns/physical validation, direct network validation, and modeling and simulation. The GVS prototype of direct network validation compares Tropical Rainfall Measuring Mission (TRMM) satellite-borne radar data to similar measurements from the U.S. national network of operational weather radars. A prototype field campaign has also been conducted; modeling and simulation prototypes are under consideration.
    Keywords: Earth Resources and Remote Sensing
    Type: NASA Precipitation Measurement Science Team Meeting; May 07, 2007 - May 10, 2007; Atlanta, GA; United States
    Format: application/pdf
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