Results 21 to 30 of about 1,391,136 (156)
2003年11月~2004年2月,采用瞬时扫描取样法对哈尔滨动物园1对成年灰鹤的越冬行为进行观察,探讨冬季不同温度和不同天气条件下对灰鹤越冬行为的影响,并得出结论如下:笼养灰鹤越冬期行为时间分配比例依次为静栖26.92%、进食25.96%、瞭望18.74%、啄雪草13.32%、理羽6.66%、游走4.91%、呜叫2.48%、警戒1.07%和打斗0.34%;大雾时静栖、瞭望和进食行为与正常天气相似,最为突出的是游走行为明显增多,而啄雪草行为减少了近10%,从总体上看活动量比正常天气时增多 ...
周同山 +3 more
doaj +2 more sources
采用瞬时扫描法研究了白鹤越冬行为的活动节律和时间分配。结果表明:越冬期笼养白鹤行为时间分配依次为静栖33.65%,觅食20.61%,理羽12.67%,避风11.37%,瞭望9.36%,啄雪草5.30%,游走2.96%,趴卧1.86%,鸣叫1.49%,展翅0.74%。笼养白鹤在越冬期活动有一定的节律性。两性间越冬期其行为和时间分配有一定的差异。不同的温度、天气条件,对笼养白鹤越冬行为有影响。
刘丹, 田秀华, 何相宝, 邬楠
doaj
Genomic responses to increased temperature and pollinator selection in Brassica rapa L.
Summary Rapid environmental change reshapes both abiotic stress and biotic interactions, yet it remains unclear how these combined forces structure plants' genomic adaptation. In particular, the joint influence of temperature and pollinator identity, two ecological axes undergoing simultaneous global shifts, has rarely been quantified at genomic ...
Yanqian Ding, Florian P. Schiestl
wiley +1 more source
Growing Demand and Uneven Supply: Eight Years of Nature Education in China 需求增长与供给不均:中国自然教育八年发展回顾
ABSTRACT This study examines the role of nature education in advancing conservation and sustainability in China between 2014 and 2023. Drawing on national survey reports and historical–comparative methods, it analyses the dynamics of public demand, institutional supply, and practitioner capacity.
Qi Yunxi, Lyu Xiang, Huang Yu
wiley +1 more source
为了研究圈养丹顶鹤幼鸟的行为发育规律,为今后的丹顶鹤保护以及再引入工程提供有价值的资料,2011年6~9月,采用目标动物取样法和瞬时扫描取样法,在扎龙自然保护区对6只笼养丹顶鹤幼鸟进行了研究。研究了圈养丹顶鹤幼鸟生长发育过程中的行为谱及其变化和日间行为规律的变化。结果表明,随着周龄的增加,幼鸟的休息行为时间分配随着周龄的变化明显减少,游走、取食、理羽和警戒行为的时间分配随着周龄的变化有所增加,而玩耍行为的时间分配先逐渐增大然后减少并稳定。最后,圈养丹顶鹤幼鸟的各行为时间分配分别为:游走14.83 ...
曹雨, 吴建平
doaj
We collated detections of the sun bear from new and previously published camera trap studies across its range. We then analysed these detections at two different spatial scales to assess the habitat associations and diel activity of this species. We found that the sun bear is tolerant to moderate habitat disturbances. ABSTRACT Degraded tropical forests,
Alexander Hendry +5 more
wiley +1 more source
ABSTRACT The evolution of the γ′−Ni3(Al, Ti) phase in superalloys is governed by a coupled coalescence‐ripening mechanism driven by elemental diffusion. In this study, thermal exposure experiments were performed at 750°C and 800°C for durations ranging from 100 to 20,000 h.
Zhaotian Wang +5 more
wiley +1 more source
本研究于2005年3月~2006年2月在哈尔滨北方森林动物园内进行,选2对成年丹顶鹤进行了行为观测,结果表明:笼养丹顶鹤繁殖期主要行为活动的时间分配比为采食28.31%、游走22.15%、身体护理21.17%、瞭望13.01%、繁殖行为11.00%、静栖4.36%,且两性间各种行为的时间分配没有明显差异(P>5%,df=81);非繁殖期的行为时间分配为采食行为46.65%、瞭望18.92%、身体护理14.72%、游走12.30%、静栖7.40%。笼养丹顶鹤的繁殖行为包括对鸣(6.09%)、炫耀(5.15%
张冬冬, 田秀华, 王晨
doaj
ABSTRACT With the rapid development of the energy storage industry, aqueous zinc‐ion batteries (AZIBs) have attracted considerable attention in the field of energy storage because of their inherent advantages, thereby emerging as a promising research direction with significant potential.
Lingjiao Fu +8 more
wiley +1 more source
白鹤属大型涉禽,仅分布于亚洲地区,其东亚种群数量为3 750只左右;由于环境变迁,种群数量越来越少,已被列为国家Ⅰ级重点保护动物。为阐明在沼泽湿地生态系统环境中白鹤春季的活动规律以及各种行为的时间分配,于2010年4月15日~5月13日,在吉林莫莫格国家级自然保护区对白鹤春季迁徙期行为进行了初步研究。白鹤的各种行为的时间分配依次为:觅食占64.34%、静栖占4.42%、警戒占13.92%、游走占4.57%、理羽占11.51%、其他(包括打斗、飞行、呜叫等情况)占2.56%。成体与亚成体白鹤 ...
王宇嘉, 范巍巍, 李晓民
doaj

