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Effects of Forest Roads on habitat pattern for Sables in Da Hinggan Mountains, Northeasten China

Chinese Geographical Science 2014年第5期24卷 587-598页

作者： LI Yuehui WU Wen XIONG Zaiping HU Yuanman CHANG Yu XIAO Duning State Key Laboratory of Forest and Soil Ecology Institute of Applied Ecology Chinese Academy of Sciences University of Chinese Academy of Sciences

The anthropogenic managements of forest have created a network of roads resulting in the loss and alternation of habitat. To better understand road′s impact on animal habitats, we assessed the habitat pattern of sables(Martes zibellina), one of rodents within national first-class protected species, when roads are considered in Huzhong area in Da Hinggan Mountains, northeastern China. Employing published literatures about behavior ecology, aerial photographs and forest stand maps, we classified the study area into three habitat types including best-suitable, suitable and unsuitable habitats based on sable habitat requirements at the landscape scale including four variables derived from forest source map with attribute database. Results indicated the loss and significant fragmentation of best-suitable habitat and home range habitat when roads, especially 150 m avoidance distance of roads, were considered. The roads reduced and fragmented highly suitable habitats more significantly during earlier development period than the later development period. Additionally, the suitable area percentage increased with increasing distance to roads. This study helped to identify the suitable area for sables and location of sable population. Also, this study suggested the passage construction and road management involving road closure and removal will reduce the fragmentation functionally and benefit the sable population.

关键词： forest road sable habitat pattern buffer analysis Da Hinggan Mountains

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Ecosystem Health and Sustainability 2021年第1期7卷 200-214页

作者： Jiangtao Fan Zuozhi Chen Xue Feng Wei Yu aSouth China Sea Fisheries Research Institute Chinese Academy of Fishery SciencesGuangzhouChina College of Marine Sciences Shanghai Ocean UniversityShanghaiChina Key Laboratory of Open-Sea Fishery Development Ministry of Agriculture and Rural AffairsGuangzhouChina National Engineering Research Center for Oceanic Fisheries Shanghai Ocean UniversityShanghaiChina Key Laboratory of Sustainable Exploitation of Oceanic Fisheries Resources Ministry of EducationShanghai Ocean UniversityShanghaiChina

A habitat suitability index model(HSI)was established to examine seasonal habitat pattern of Sthenoteuthis oualaniensis in the South China Sea and assessed the impacts of the El Niño event on habitat variations based on sea surface temperature(SST),chlorophyll-a(Chla)and sea surface height(SSH).Environmental conditions and habitat patterns showed significant seasonal and spatial *** pattern of favorable environmental conditions played important roles in regulating the ranges and longitudinal and latitudinal distributions of suitable habitats(areas with HSI≥0.6)of *** across *** positive correlation was found between SST and HSI,whereas negative relationship was revealed between HSI and Chla as well as SSH by correlation *** to normal climate condition in spring 2014,the El Niño events in spring 2015 and 2016 yielded lower SST and higher Chla and SSH,which were unfavorable for the formation of high-quality *** ranges of environmental conditions showed decreasing trend from spring 2014 to ***,the suitable habitats in spring 2015 and 2016 largely contracted and became *** findings indicated that seasonal habitat patterns of *** in the South China Sea were strongly affected by the El Niño events and local environmental conditions.

关键词： Sthenoteuthis oualaniensis habitat pattern spatio-temporal distribution seasonal variation South China Sea

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Effects of Climate Variability on habitat Range and Distribution of Chub Mackerel in the East China Sea

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Journal of Ocean University of China 2021年第6期20卷 1483-1494页

作者： YU Wei WEN Jian CHEN Xinjun LI Gang LI Yuesong ZHANG Zhong College of Marine Sciences Shanghai Ocean UniversityShanghai 201306China Laboratory for Marine Fisheries Science and Food Production Processes Qingdao National Laboratory for Marine Science and TechnologyQingdao 266237China National Engineering Research Center for Oceanic Fisheries Shanghai Ocean UniversityShanghai 201306China Key Laboratory of Sustainable Exploitation of Oceanic Fisheries Resources Ministry of EducationShanghai Ocean UniversityShanghai 201306China Key Laboratory of Oceanic Fisheries Exploration Ministry of Agriculture and Rural AffairsShanghai 201306China Scientific Observing and Experimental Station of Oceanic Fishery Resources Ministry of Agriculture and Rural AffairsShanghai 201306China

Spatio-temporal distribution of chub mackerel Scomber japonicus is strongly susceptible to climate *** this study,a weighting-based habitat suitability index(HSI)model was established to assess the impacts of Pacific Decadal Oscillation(PDO)on habitat range and distribution of *** in the East China Sea(ECS)using vertical water temperature at depths of 2.5 m,25 m and 50 *** showed that the optimal HSI model selected from ten weighting scenarios can yield reliable *** analysis revealed a significant negative relationship between the PDO index and water temperature anomaly at different *** water temperatures at three different layers on the fishing ground of *** tended to be low in the warm PDO phase and high in the cold PDO phase,*** range of suitable habitats and its spatial distribution exhibited large differences between the warm and cold PDO *** a warm PDO phase,vertical water temperature became cool,and the monthly preferred water temperature at each depth for *** shifted ***,habitat quality dramatically decreased,and suitable habitat ranges also reduced and moved ***,in a cool PDO phase,with the warmer vertical water temperature and northwestward shift of the preferred water temperature,the suitable habitats enlarged and migrated in the same *** findings indicate that the PDO produced significant impacts on habitat range and distribution of *** in the East China Sea.

关键词： Scomber japonicus habitat pattern vertical water temperature Pacific Decadal Oscillation the East China Sea

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