科其喀尔冰川冰面湖温度变化及其热机制

基于2007年7～9月对科其喀尔冰川消融区冰面湖、表碛、裸冰的温度和消融观测,分析三者的温度变化特征及其差异,探讨冰面湖的热机制.结果表明:科其喀尔冰川冰面湖表层水温受瞬时天气状况影响明显,变化趋势与气温一致,但不如气温变化剧烈并有1～3h滞后性;由于白天冰川融水注入与表层暖水混合下沉,深层湖水在一天的14～16时左右...     

中国冰川旅游发展潜力评价及其空间开发策略

从区位交通、资源环境、基础开发及经济社会四个方面出发,构建了中国冰川旅游发展潜力评价指标体系,运用模糊评价赋值与层次分析法,对中国冰川区32个地州市冰川旅游发展潜力进行了综合评估,提出了相应的空间开发策略。结果表明：（1）区位交通潜力较高地区集中于冰川进入性和通达性较好的省会城市及周边地州市,以及具有明显地缘优势的区域...     

广东丘陵山地遭受的“合法”破坏及应对措施

在实地调查和资料分析统计基础上,指出广东省丘陵山地遭受的各种“合法”破坏行为.研究显示:上世纪80年代,全省丘陵山地林业在经历了3次大破坏之后重新获得恢复和发展,然而自90年代末开始又遭受到大种桉树的影响;近10年来为占用耕地作建设用地,山地丘陵被以“易地开发”、“易地保护”的合法手段大肆“开发”;近期更是提出“25°以下坡地开发规划”,这将使丘陵山地遭受全面破坏.为此,建议相关部门应采取有效保护措施:严禁利用水源林地、水保林地等生态林业用地种植尾叶桉;利用卫星遥感手段加强用地监控;严格土地开发审批的相关手续,发挥群众对土地利用的监督作用;对非法滥用土地的相关领导实行问责制;切实追究土地利用规划过程中的造假和腐败行为,以从源头上整治对丘陵山地的“合法”破坏并保护好耕地和山地资源.     

稿约

随着人口的增加和对山地资源需求压力的加大,山区社会经济发展和生态环境问题日趋突出,特别是不合理的人类活动和全球气候变化带来的各种山地灾害损失加重。为使山地科学研究更好地服务国家可持续     

《山地学报》征稿简则

《山地学报》是专门报道山地科学研究理论与山区开发、整治、建设实践相结合等内容的综合性科技期刊,内容涵盖自然科学与人文科学两大门类中与山地研究、开发有关的多     

打造西部特色重点实验室 促进河西走廊绿洲生态经济发展——甘肃省森林生态与冻土水文水资源重点实验室和博士后科研工作站

<正>甘肃省祁连山水源涵养林研究院主要从事干旱半干旱山地水源涵养林研究。研究院在祁连山高中低海拔、山区、浅山区及绿洲荒漠区建立了合理布局的科研试验基地,已建成以森林、湿地、荒漠为主体的生态系统定位研究网络体系和以良种繁育、造林技术、园林规划等应用技术研究和科技开发体系。     

新昌惊现第四纪冰川遗迹--冰石河、冰臼群和李四光环

浙江新昌是国家级地质公园.有着硅化木的宝库、复合型丹霞地貌的代表和火山凝灰岩的全息档案馆及恐龙乐园这四大特色.4月上旬,中国地质科学院地质研究所、中国第四纪冰川权威专家韩同林教授与中国地质科学院科技处陈尚平副教授一行到新昌考察时,在新昌发现了中国第四纪冰臼群、冰石河和李四光环.新昌第四纪冰川遗迹的发现,不仅丰富了新昌国家级地质公园的内涵,而且对研究全球的环境演化及对今后气候演化趋势、变化幅度等具有重要意义.     

Sporo-pollen Assemblage and Paleoclimate Events in Shelf Area of the Southern Yellow Sea Since 1.5 ka B.P.

Based on the authors‘ 1986 to 1994 sporo-pollen assemblage analysis in the southern Yellow Sea area, data from 3 main cores were studied in combination with ^14C, palaeomagnetic and thermoluminescence data. The evolution of the paleoclimate environments in the southern Yellow Sea since 15ka B.P. was revealed that, in deglaciation of the last glacial period, the climate of late glaciation transformed into that of postglaciation, accompanied by a series of violent climate fluctuations. These evolution events happened in a global climate background and related to the geographic changes in eastern China. We distinguished three short-term cooling events and two warming events. Among them, the sporo-pollen assemblage of subzone A1 showed some cold climate features indicating that a cooling event occurred at about 15 - 14ka. B .P. in early deglaciation. This subzone corresponds to the Oldest Dryas. In subzone A3 , many drought-enduring herbal pollens and some few pollens of cold-resistant Picea, Abies, etc. were found, which indicated that a cooling event, with cold and arid climate, occurred at about 12- 11ka. B.P. in late deglaciation. This subzone corresponds to the Younger Dryas. The sporo-pollen assemblage of zone B showed warm and arid climate features in postglaciation. Although the assemblage of subzone B2 indicated a cold and arid climate environment, the development of flora in subzone B2 climate was less cold than that in A3 . Subzone B2 indicated a cooling event which occurred at about 9ka B.P. in early Holocene. Subzone A2, with some distinct differences from subzone A1 and A3 , indicated a warming event which occurred at 14 - 13ka. B.P. and should correspond to a warming fluctuation. The sporo-pollen assemblage of zone C showed features of warm-moist flora and climate, and indicated a warming event which universally occurred along the coast of eastern China at 8 - 3ka B.P. in middle Holocene, and its duration was longer than that of any climate events mentioned above. This period was climatic optimum and belonged to an altithermal period in postglaciation.