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GIS APPLICATION IN RESEARCH OF WILDLIFE HABITAT CHANGE——A case study of the Giant Panda in Wolong Nature Reserve 总被引:2,自引:0,他引:2
Liu Xuehua Institute of Geography CAS Beijing People''s Republic of China M.C. Bronsveld A.G. Toxopeus M.S. Kreijns International Institute for Aerospace Survey Earth Sciences The Netherlands 《地理学报(英文版)》1997,(4)
I.IntroductionTheGiantPanda(Ailuropodamelanoleuea)isanendangeredanimalspeciesintheworld.Thereareabout1000individualsleftandconfinedintheisolatedmountainareasinthesouthwesternpartofChina.Itsremaininghabitatcoversabout29,500km2[2,6,11].Humanencroachmentisconsidere… 相似文献
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The dislocation substructures in olivine from coarse-grained peridotite xenoliths in kimberlites from the Lesotho region have been determined. The [100] dislocations may be located in simple (100) tilt boundaries while the density of free or individual [100] dislocations is 106/cm2 or less. The [001] dislocations form (010) twist arrays or more complex (100) subboundaries with the [100] dislocations; the density of free [001] dislocations increases to 8 × 108/cm2 in those grains in which tangles are observed. The simple (100) subboundaries are considered to result from a high temperature, slow strain-rate deformation (creep-like process) while the more complex subboundaries composed of [100] and [001] dislocations, as well as the high density of [001] dislocations, indicate faster strain rates and/or lower deformation temperatures than the creep deformation. These two broad phases of deformation have been interpreted as an early stage of mantle-type flow followed by deformation during or subsequent to the emplacement of the kimberlite. 相似文献
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