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首页> 外文会议>Asian conference on remote sensing >MONITORING OF JAPANESE FOREST BIOMASS USING STEREOSCOPIC ABILITY OF ASTER SENSOR
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MONITORING OF JAPANESE FOREST BIOMASS USING STEREOSCOPIC ABILITY OF ASTER SENSOR

机译：利用艾斯特传感器立体能力监测日本森林生物量

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摘要

Terra/ASTER sensor, which has nadir looking and backward looking functions, provides Digital Surface Model (DSM). The DSM consists of ground elevation above sea level and the heights of objects on ground such as building heights and tree heights. The tree heights, however, are not real heights of trees measuring top point, and they are the average heights of tree canopies. As forest grows, the average heights of tree canopies become higher. We suppose the average heights of the canopies have stronger relationship with biomass than with heights of trees. The changes of DSM at each range of periods show the quantity of growth or the disappearance of forest stands. We get Terra/ASTER L1A product from 2001 to 2008 and generate DSM data using ASTER DEM/Ortho software SILCAST. In Broad-leaved deciduous forest, leaves are lost in winter and early spring. The DSM is the ground height and does not reflect the heights of trees at these seasons. The differences in DSM between summer season and winter season represent the biomass of broadleaf forest. In coniferous tree areas, DSM is not influenced by the changes of seasons. There are a lot of errors in ASTER DSM and the influence of slope and elevations increase the errors. We detect the range of errors and improve the accuracy of DSM.
机译：Terra / Aster传感器，具有Nadir的寻找和落后的功能，提供数字表面模型（DSM）。 DSM由海拔地上的地面高度和地面上的物体高度（如建筑物高度和树高）组成。然而，树高度不是测量顶点的树木的真正高度，它们是树檐篷的平均高度。随着森林的增长，树木檐篷的平均高度变得更高。我们假设檐篷的平均高度与生物质的关系比与树的高度更强。每个周期的DSM的变化显示出森林站立的生长量或消失。我们从2001年到2008年获取Terra / Aster L1A产品，并使用Aster DEM / Ortho软件Silcast生成DSM数据。在阔叶落叶林中，叶子在冬季和早春丢失。 DSM是地面高度，不会反映这些季节的树木的高度。夏季与冬季之间DSM的差异代表了阔叶林的生物量。在针叶树区域中，DSM不会受到季节变化的影响。 ASTER DSM有很多错误，斜率和高度的影响力增加了错误。我们检测到误差范围并提高DSM的准确性。

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