Results 41 to 50 of about 647,310 (149)

Seasonal Spatial Population Density Distribution Dynamics of Lynx and Ungulate Prey in Cold‐Temperate Coniferous Forests 寒温带针叶林猞猁和有蹄类猎物种群密度空间分布的季节性动态研究

open access: yesIntegrative Conservation, Volume 5, Issue 2, Page 225-235, June 2026.
This study used camera trap data from 6 years between 2016 and 2021 and generalized linear mixed models to explore the factors that influence the spatial density distribution of lynx and its prey populations in warm and cold seasons in Inner Mongolia Hanma National Nature Reserve, China.
Wentao Zhang   +11 more
wiley   +1 more source

雪豹栖息地选择研究初报

open access: yes, 2006
2004年9月~2005年7月,对新疆天山东部、北塔山、阿勒泰山和托木尔峰自然保护区的雪豹活动痕迹进行调查,分析其栖息地选择。通过对171个痕迹标记样方和123个对照样方的分析,用卡方适合度检验和二项式检验分析雪豹栖息地选择差异;用主分量分析确定其栖息地选择的主要因素。结果表明:①雪豹对海拔、地形、植被类型、放牧状况及生境平坦度几项生境特征均有选择性,尤其对海拔、地形、植被类型和生境平坦度选择性明显;②众多生境特征中,生境平坦度和植被类型是雪豹栖息地选择的主要影响因子,地形次之;③在生境平坦度中 ...
Chundawat R S   +5 more
core  

Threats to the World's Bears and Efforts to Conserve Them: Perspectives and Actions of IUCN Bear Specialist Group Members 世界熊类面临的威胁及其保护努力:IUCN熊类专家组成员的观点与行动

open access: yesIntegrative Conservation, Volume 5, Issue 2, Page 177-191, June 2026.
A survey of IUCN Bear Specialist Group (BSG) members revealed that habitat loss, degradation and fragmentation is the greatest threat to each of the 7 species of terrestrial bears. Poaching and human–bear conflicts are also high threats for some of these species.
David L. Garshelis   +3 more
wiley   +1 more source

小浪底水库运行对黄河鲤鱼栖息地的影响

open access: yes, 2010
通过历史文献和实地生态调查,了解黄河鲤鱼生态习性及与径流组分响应关系,在此基础上,通过分析水库对径流组分影响,建立栖息地模拟模型,研究小浪底水库运行对黄河鲤鱼生存繁衍的影响。研究表明:(1)径流的流量组分与黄河鲤鱼的生态习性有密切的相关关系,小浪底水库的运行显著改变了流量脉冲、小洪水及大洪水,流量脉冲消失或减少使得黄河鲤鱼产卵缺乏足够的产卵栖息地;小洪水减少使黄河鲤鱼的食物来源和栖息地减少;漫滩洪水减少和消失使黄河鲤鱼失去从河滩地获得食物和栖息地机会。(2)通过建立River2D模型 ...
张文鸽, 赵卫华, 蒋晓辉
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Individual Variation in Overwintering Strategies of the Great Evening Bat (Ia io) in Subtropical China 中国亚热带地区大足蝠 (Ia io) 越冬策略的个体差异

open access: yesWildlife Letters, Volume 4, Issue 2, Page 66-72, June 2026.
Tracking with GPS and accelerometers shows that great evening bats in subtropical China use two overwintering strategies: some remain in continuous hibernation, while others switch between torpor and activity as temperatures change. This behavioral flexibility, shaped by climate, underscores the importance of protecting diverse roosting habitats for ...
Zhiqiang Wang   +7 more
wiley   +1 more source

新疆北塔山雪豹对秋季栖息地的选择

open access: yes, 2006
2004年9~10月,对新疆北塔山地区雪豹(Unicaunica)栖息地选择进行了调查。在选定的15条样带上测定了59个利用样方及30个任意样方的6种生境特征(海拔、地形、植被类型、生境平坦度、放牧状况和坡向),其结果如下:Vanderploeg和Scavia选择指数表明:雪豹对海拔、地形、植被类型、生境平坦度和坡向存在选择性:(1)雪豹偏好利用海拔2000~2200m,而避开2600~3000m区域;(2)倾向于悬崖底部和山嵴,避开山坡和山谷;(3)偏好于灌丛,避开森林;(4)避开平坦的开阔地;(5 ...
马鸣   +3 more
core  

Wings of Change: Motivations, Challenges, and Environmental Concerns Among Birdwatchers 变革之翼:观鸟者的动机、挑战与环境关切

open access: yesWildlife Letters, Volume 4, Issue 2, Page 83-93, June 2026.
Birdwatching in Nepal has high potential to support avain biodiversity and tourism. Conservation was identified as the primary motivation for birdwatching, followed by enjoyment and achievement purposes. Health/wellbeing benefits, social and economic factors showed moderate representation, whereas academic motivation played a relatively minor role ...
Kamal Raj Gosai, Hem Bahadur Katuwal
wiley   +1 more source

新疆托木尔峰自然保护区雪豹(Uncia uncia)栖息地选择与种群密度研究

open access: yes, 2006
雪豹(Uncia uncia)是一种仅分布于中亚高山地区的珍稀物种,被IUCN列为濒危物种,并被CITES列入附录I,是国家I级重点保护野生动物。国外学者曾对雪豹的分布、食性及活动规律等开展过广泛研究,国内对其分布和生态仅有少量报道,为此开展雪豹的栖息地选择与种群密度研究对分析雪豹濒危原因和物种的保护具有重要意义。 2004年10月~2005年12月作者运用痕迹分析、食物量估算、红外相机自拍等调查方法3次赴托木尔峰国家级自然保护区对雪豹的分布、栖息地选择和种群密度进行调查,结果如下: 1 ...
徐峰
core  

基于证据权重法的丹顶鹤栖息地适宜性评价

open access: yes, 2009
采用证据权重法对扎龙丹顶鹤栖息地适宜性进行评价。利用RS和GIS的空间分析功能,分别提取土地利用、植被、铁路、国道及居民点的信息,建立证据专题层,确定相应证据层的权重值,然后进行条件独立性检验,最后生成后验概率图。利用证据权重法可以客观定量地评价栖息地适宜性,同样,一个客观的栖息地适宜性评价模型可以评估生物多样性价值,管理和保护湿地 ...
秦喜文   +5 more
core  

平武县大熊猫栖息地经济发展对大熊猫保护的影响及对策

open access: yes, 2005
用参与式乡村评估法对平武县白马藏族大熊猫栖息地村民的经济进行了调查。对比两次调查结果,表明栖息地村民经济收入减少,贫困家庭比例显著上升。村民的经济发展活动中,放牧、挖药、采集柴薪以及打猎等活动增加,会导致栖息地退化,威胁大熊猫及其它珍稀动物的生存。而传统的伐木导致栖息地破坏和丧失,对大熊猫及栖息地的直接威胁已不复存在 ...
傅之屏, 杨远兵,傅之屏
core  

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