UMD-NASA Carbon Mapping /Sonoma County Vegetation Mapping and Lidar Program

<p>This survey covers all of Sonoma County as well as two small portions of southern Mendocino County. Data were provided by the University of Maryland and the <a href="http://sonomavegmap.org">Sonoma County Vegetation Mapping and Lidar Program</a> under grant NNX13AP69G from NASA's Carbon Monitoring System (Dr. Ralph Dubayah, PI). The Sonoma County Vegetation Mapping and Lidar Program is NASA/UMD's local partner in this project- its members are as follows: the Sonoma County Agricultural Preservation and Open Space District, the Sonoma County Water Agency, the California Department of Fish and Wildlife, the United States Geological Survey, the Sonoma County Information Systems Department, the Sonoma County Transportation and Public Works Department, the Nature Conservancy, and the City of Petaluma.</p><p>These data will be used for various research projects throughout Sonoma County. They are critical to assessing climate mitigation and adaptation strategies and benefits provided by the landscape, such as the amount of carbon sequestration in forests or the degree to which riparian areas, floodplains, and coastal habitats may buffer extreme weather events. Other research applications include groundwater, ecosystem services valuation, ecosystem resiliency, and wildlife habitat connectivity. Finally, these data sets are key to facilitating good planning and management for watershed protection, flood control, fire and fuels management and wildlife habitat conservation.</p><p>The data was collected between September 28 and November 26, 2013 by Watershed Sciences, Inc. (WSI). Lidar was collected at high density greater than 8 pulses per square meter. WSI used two airplanes, one carrying a Leica ALS50 and the other a Leica ALS70; systems were flown at 900 meters above ground level, capturing a scan angle of 15 degrees from nadir (30 degree field of view). 4-band, 6-inch resolution aerial photography was collected simultaneously with the Lidar data.</p>

<p>本调查涵盖了索诺玛县全域以及门多西诺县南部的小部分区域。数据由马里兰大学以及<a href="http://sonomavegmap.org">索诺玛县植被制图和激光雷达计划</a>提供，该计划由美国国家航空航天局（NASA）的碳监测系统资助（资助编号NNX13AP69G，项目负责人：Ralph Dubayah博士）。索诺玛县植被制图和激光雷达计划是NASA/UMD在本项目中的地方合作伙伴——其成员包括：索诺玛县农业保护与开放空间区、索诺玛县水利局、加利福尼亚州鱼类和野生动物部、美国地质调查局、索诺玛县信息系统部、索诺玛县交通和公共工程局、自然资源保护协会以及佩塔卢马市。</p><p>这些数据将用于索诺玛县范围内的各种研究项目。它们对于评估气候减缓与适应策略以及景观提供的益处至关重要，例如森林中碳封存量的评估或河岸地区、洪泛区和沿海栖息地可能缓解极端天气事件的程度。其他研究应用包括地下水、生态系统服务估值、生态系统恢复力和野生动物栖息地连通性。最后，这些数据集对于促进流域保护、防洪、火灾和燃料管理以及野生动物栖息地保护的良好规划和管理至关重要。</p><p>数据收集于2013年9月28日至11月26日，由Watershed Sciences, Inc.（WSI）进行。激光雷达数据以每平方米超过8脉冲的高密度收集。WSI使用了两架飞机，一架携带莱卡ALS50，另一架携带莱卡ALS70；系统在离地面900米的高度飞行，从正下方（30度视场角）捕获15度的扫描角度。同时收集了与激光雷达数据同步的4波段、6英寸分辨率的航空摄影。</p>