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1.资源遥感的信息特征 (1) 空间性。资源遥感信息具有一定的地理坐标位置,受水平地带和垂直地带的影响,反映了水分和热量的区域差异。 (2) 时间性。在一年中又具有季相节律,能反映绿色生物的荣枯、冰雪的积累消融、水体潮汐的消涨,一日之内也因太阳直斜射不同阴影有短长之别。 (3) 综合性。像元所代表的是多层平面的自然综合体,是多种资源赋存的空间,包括地质、地貌、土壤、水文、土地利用等多种自然元素的综合特性,彼此间有着物质和能量的交换。同一元素可在不同亚系统中起作用:如植
1. Resource remote sensing information features (1) Spatial. Resource remote sensing information has a certain geographical coordinates of the location, subject to horizontal and vertical zones, reflecting the regional differences in water and heat. (2) Timeliness. In a year with seasonal rhythm, which can reflect the glory of green creatures, the accumulation of melting snow and ice, the tide of water disappear, within a day due to the direct sun oblique different shadows have short length difference. (3) comprehensive. Pixel represents a multi-level natural complex, which is a space for a variety of resources to exist, including the comprehensive characteristics of various natural elements such as geology, geomorphology, soil, hydrology and land use, and their mutual material and energy exchange. The same element can play a role in different sub-systems: such as planting