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• lands on which there ore rotation cycles of clear-cutting and blockplanting are part <br /> of Forest Land. On such lands, when trees reach marketable size, which for <br /> pulpwood in the Southeastern United States may occur in 2 to 3 decades, there will <br /> be large areas that have little or no visible forest growth. The pattern can <br /> sometimes be identified by the presence of cutting operations in the midst of a large <br /> expanse of forest. Unless there is evidence of other use, such areas of little or no <br /> forest growth should be included in the Forest Land category. Forest Land which is <br /> grazed extensively, as in the Southeastern States, would be included in this category <br /> because the dominant cover is forest and the dominant aactivities ore forest related. <br /> Such activities could form the bosis for Levels III or IV cotegorization. Lands that <br /> meet the requirements for Forest Land and also for an Urban or Built-up category <br /> should be placed in the latter category. The only exceptions in classifying Forest <br /> Land are those areas which would otherwise be classified as Wetlond if not for the <br /> forest cover. Since the wet condition is of much interest to land managers and <br /> planning groups and is so important as an environmental surrogate and control, such <br /> lands ore classified as Forested Wetland. <br /> Auxiliary concepts associated with Forest Land, such as wilderness reservation, <br /> water conservation, or ownership classification, are not detectable using remote <br />• sensor data. Such concepts may be used for creating categories at the more detailed <br /> levels when supplemental information is available. <br /> At Level II <br />Forest Land is divided into three categories: Deciduous, Evergreen <br /> , <br /> and Mixed. To differentiate these three categories effectively, sequential dota, or <br /> at least data acquired during the period when deciduous trees are bare, generally will <br /> be necessary. <br />41. Deciduous Forest Land <br />Deciduous Forest Land includes allfarested areas having a predominance of trees <br />that lose their leaves at the end of The frost-free season or at The beginning of a <br />dry season. In most parts of The United States, these would be the hardwoods such <br />as oak (Quercus), maple (Acer), or hickory (Carya) and the "soft" hardwoods, such as <br />aspen (Populus tremuloides) (Shelford, 1903). Tropical hardwoods are included in the <br />Evergreen Forest Land category. Deciduous forest types characteristic of Wetland, <br />such as tupelo (Nyssa) or cottonwood (Populus deltoides), also are not included in this <br />category. <br />• <br />2.9-10 <br />