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毛丝鼠体温调节发育的研究 被引量:1
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作者 王培潮 钱国桢 +2 位作者 陆厚基 盛和林 祝龙彪 《动物学报》 SCIE CAS 1985年第4期359-364,共6页
毛丝鼠幼仔,六日龄已基本上达到恒温水平。吮乳期幼仔的静止代谢率较威体高;二日龄前,代谢率变化不符合体表面积定律;二日龄后,趋向成年恒温动物代谢类型,而符合体表面积定律。幼仔在25℃环境的热能消耗比20℃时少。
关键词 Chinchilla laniger Sucking period of chinchilla Development of the-rmoregulation Heat energy cost.
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Predicting the Impact of Climate Change on Vulnerable Species in Gandaki River Basin,Central Himalayas
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作者 Raju RAI ZHANG Yili +4 位作者 LIU Linshan Paras Bikram SINGH Basanta PAUDEL Bipin Kumar ACHARYA Narendra Raj KHANAL 《Journal of Resources and Ecology》 CSCD 2022年第2期173-185,共13页
Gandaki River Basin(GRB)is an important part of the central Himalayan region,which provides habitat for numerous wild species.However,climatic changes are making the habitat in this basin more vulnerable.This paper ai... Gandaki River Basin(GRB)is an important part of the central Himalayan region,which provides habitat for numerous wild species.However,climatic changes are making the habitat in this basin more vulnerable.This paper aims to assess the potential impacts of climate change on the spatial distributions of habitat changes for two vulnerable species,Himalayan black bear(Ursus thibetanus laniger)and common leopard(Panthera pardus fusca),using the maximum entropy(Max Ent)species distribution model.Species occurrence locations were used along with several bioclimatic and topographic variables(elevation,slope and aspect)to fit the model and predict the potential distributions(current and future)of the species.The results show that the highly suitable area of Himalayan black bear within the GRB currently encompasses around 1642 km^(2)(5.01%area of the basin),which is predicted to increase by 51 km^(2) in the future(2050).Similarly,the habitat of common leopard is estimated as 3999 km^(2)(12.19%of the GRB area),which is likely to increase to 4806 km^(2) in 2050.Spatially,the habitat of Himalayan black bear is predicted to increase in the eastern part(Baseri,Tatopani and north from Bhainse)and to decrease in the eastern(Somdang,Chhekampar),western(Burtibang and Bobang)and northern(Sangboche,Manang,Chhekampar)parts of the study area.Similarly,the habitat of common leopard is projected to decrease particularly in the eastern,western and southern parts of the basin,although it is estimated to be extended in the southeastern(Bhainse),western(Harichaur and northern Sandhikhark)and north-western(Sangboche)parts of the basin.To determine the habitat impact,the environmental variables such as elevation,Bio 15(precipitation seasonality)and Bio 16(precipitation of wettest quarter)highly contribute to habitat change of Himalayan black bear;while Bio 13(precipitation of wettest month)and Bio 15 are the main contributors for common leopard.Overall,this study predicted that the suitable habitat areas of both species are likely to be impacted by climate change at different altitudes in the future,and these are the areas that need more attention in order to protect these species. 展开更多
关键词 climate change habitat change Himalayan black bear(Ursus thibetanus laniger) common leopard(Panthera pardus fusca) Gandaki River Basin
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