Land Cover and Road Network Map for the Monarch Butterfly Biosphere Reserve in Mexico, 2003
Land Cover and Road Network Map for the Monarch Butterfly Biosphere Reserve in Mexico, 2003
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墨西哥帝王蝶生物圈保护区土地覆盖和道路网络图，2003 年
DOI：
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发表时间：
2007
期刊：
影响因子：
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通讯作者：
M. Jiménez
中科院分区：
文献类型：
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作者：
M. Isabel Ramírez;R. Miranda;Raúl R. Zubieta;M. Jiménez
请点击这里下载与本文相关的地图。为了保护帝王蝶（Danaus plexippus L.）作为墨西哥的主要越冬地，1980年、1986年和2000年的三项总统法令保护了主要殖民地所用的冷杉林。目前帝王蝶生物圈保护区（MBBR）的领土主要属于公共财产（Ejidos和土著社区）。与预期相反的是，由于大量非法和法律的伐木和自给农业活动，这一保护区仍然面临着严重的干扰和森林覆盖面的丧失。众所周知，道路是造成干扰和毁林的景观要素。因此，该地图的目的是说明MBBR中的道路网络和土地覆盖关系，同时考虑到土地保有权。道路矢量层是通过对2003年3月的1米分辨率数字航空照片马赛克和2004年3月的1米分辨率Ikonos全色图像以及实地工作进行照片判读获得的，使用GPS地理参考轨迹。土地覆被多边形的视觉解释2003年1月陆地卫星ETM+彩色复合材料，同时验证了航空照片镶嵌。最终的1：75000地图显示了保护区森林上方非常高的人类压力。这表现在高密度的公路网，主要由三级公路组成，这些公路在许多情况下是非法开放给木材开采的，与这些森林的保护类别不符。
Abstract Please click here to download the map associated with this article. To preserve the monarch butterfly (Danaus plexippus L.) overwintering sites in Mexico, the fir forests used for the main colonies have been protected by three presidential decrees, in 1980, 1986 and 2000. The territory of the current Monarch Butterfly Biosphere Reserve (MBBR) belongs mainly to communal properties (ejidos and indigenous communities). Contrary to expectation, this protected area is still facing severe disturbance and loss of forest cover, because of intensive illegal and legal logging, and subsistence farming activities. Roads are landscape elements well known as a cause of disturbance and deforestation. Therefore, the aim of this map is to illustrate the road network and land cover relationship in the MBBR, taking into account the land tenure. The roads vector layer was obtained by photointerpretation of one meter resolution digital aerial photograph mosaics from March 2003, and one meter resolution Ikonos pansharpened images from March 2004, as well as field work, using GPS georeferenced tracks. Land cover polygons were constructed by visual interpretation of January 2003 Landsat ETM+ color composites, simultaneously verified with the aerial photograph mosaics. The final 1:75000 map shows very high human pressures over the reserve forests. This is expressed by a high density road network, composed mainly of tertiary roads opened to wood extraction, in many cases illegally, and incompatible with the protection category of these forests.