نتایج جستجو برای: forest road
تعداد نتایج: 175693 فیلتر نتایج به سال:
Within the past decade, several transportation planning decision support systems that combine heuristic programming techniques with geographic information systems (GIS) technology have been developed to meet forest operation challenges. These decision support systems, however, have not directly addressed the upslope influences of landslides in choosing routes from road networks. This paper prov...
After finishing my Ph.D. in Berkeley in 1971, I needed a job in the San Francisco Bay Area, while my wife was finishing her Ph.D. in statistics. It was a tough year jobwise and the only available position was a part-time job with the US Forest Service Station in Berkeley, which funded a position as a Research Engineer at the OR Center at UC Berkeley. My boss and friend up to today, Daniel Navon...
Comparison of Birds Detected from Roadside and Off-Road Point Counts in the Shenandoah National Park
Roadside point counts are generally used for large surveys to increase the number of samples. We examined differences in species detected from roadside versus off-road (200-m and 400-m) point counts in the Shenandoah National Park. We also compared the list of species detected in the first 3 minutes to those detected in 10 minutes for potential species biases. Results from 81 paired roadside an...
State Key Laboratory of Vegetation and Environmental Change, Institute of Botany, Chinese Academy of Sciences, 20 Nanxincun, Xiangshan, 100093 Beijing, China, Biodiversity, Macroecology and Conservation Biogeography Group, Faculty of Forest Sciences and Forest Ecology, University of Göttingen, Büsgenweg 1, 37077 Göttingen, Germany, Ministry of Education Key Laboratory of Poyang Lake Wetland and...
Roads can fragment animal populations, which can lead to decreased gene flow between populations. This causes increased genetic differentiation and decreased genetic diversity between and among populations. These affects are well documented in studies focusing upon the effects of urbanization on salamander populations, however, little is known about the effects of rural roads on fragmented popu...
1Shandong Provincial Key Laboratory of Coastal Zone Environmental Processes, Yantai Institute of Coastal Zone Research, Chinese Academy of Sciences, ChunHui Road 17, Yantai, Shandong 264003, PR China 2Key Laboratory of Forest Ecology and Environment of the State Forestry Administration, Institute of Forest Ecology, Environment and Protection, Chinese Academy of Forestry, Wan Shou Shan, Beijing ...
The Waione Block of Tongariro Forest contains an important kiwi population and has significant vegetation values. A system is required for routinely monitoring the effects of possum browse, the general health of the forest and re-generation of canopy species in this block. A circuit with five plots has been established, starting and finishing on Pukehinau Road.
[1] This study investigated how roads interact with hillslope flow in a steep, forested landscape dominated by subsurface flow and how road interactions with hillslope flow paths influence hydrologic response during storms in a second-order catchment. Runoff was measured continuously from 12 subcatchments draining to road segments and covering 14% of a 101-ha, second-order catchment (WS3) in th...
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