Evaluation and spatiotemporal characteristics of glacier service value in the Qilian Mountains

Journal of Geographical Sciences - Glaciers provide essential resources and services for human well-being and so-cio-economic development in arid regions. It is of great significance for regional...     

关于鱼的生长方程的研究──Ⅰ.鱼的生长方程的修正

指出vonBertalanffy生长公式的局限性在于公式导出时所用假设“鱼的体重增加量同体重的2／3次方成比例，减少量同体重成比例”的根据不充分；其不足之处在于解方程时将变量l误为鱼的体长。本文作了更为一般的假设，即鱼的体重增加量同体重的P次方成比例；减少量同体重的q次方成比例。进而通过严格的数学推导，得出鱼的更为一般的生长方程w=w∞[1-e－k(s-s0)]r，使vonBertalanffy生长公式是该方程的特殊情形．     

Impact of ocean acidification on physiology and microbiota in hepatopancreas of Pacific oyster Crassostrea gigas

Journal of Oceanology and Limnology - The hepatopancreas is an important tissue involved in various biological metabolism for mollusks, but its responses to ocean acidification (OA) have not been...     

台湾沿岸全新世海平面波动

本文汇集了一批台泫沿岸全新世隆起海相沉物样品的＾１４Ｃ年代，高程数据，尝试以华南海平面变化曲线为参照系。从相对海平面变化中剔除构造运动的影响，恢复台湾古海平面的高度，进而探讨海平面的波动变化。并与闽、粤沿岸海平面变化进行比较。     

关于鱼的生长方程的研究

指出ｖｏｎ Ｂｅｒｔａｌａｎｆｆｙ生长公式的局限性在于公式导出时所用假设“鱼的体重增加量同体重的２／３次方成比例，减少量同体重成比例”的根据不充分；其不足之处在于解方程时将变量ｌ误为鱼的体长。本文作了更为一般的假设，即鱼的体重增加量同体重的ｐ次方成比例；减少量同体重的ｑ次方成比例。进而通过严格的数学推导，得出鱼的更为一般的生长方程ｗ＝ｗ∞［１－ｅ＾－ｋ（ｔ－ｔ０）］＾ｒ，使ｖｏｎ Ｂｅｒｔａｌａｎ     

Variations in hydraulic properties of collapsible loess exposed to wetting and shearing

Acta Geotechnica - Loess landslides induced by rainfall or irrigation frequently occur in the Loess Plateaus, China, and the stress paths followed are similar to water infiltration at a constant...     

淮南矿区煤的深成变质与深部煤质预测

本文根据煤深成变质的现代理论，采用地质一煤质结合的方法，定量地评价了淮南矿区煤的深成变质作用，从而对深部煤质作出初步预测。成果表明，淮南矿区煤深成变质的阶段性和回返期后的变质作用相当显著；在由浅到深的可采深度范围内，存在着由低级烟煤到高级烟煤构成的垂直分带。据此推测，淮南煤田并不是单一煤种（气煤），更可能是一个赋存着多种煤类的烟煤区。     

Impact of ocean acidification on physiology and microbiota in hepatopancreas of Pacific oyster Crass os trea gigas

The hepatopancreas is an important tissue involved in various biological metabolism for mollusks, but its responses to ocean acidification(OA) have not been well evaluated. In this study, the oysters were cultured in simulated conditions by continuously bubbling with ambient air(p H=8.10) or air-CO₂(p H=7.50) for up to two months, and the variations on the antioxidant capacity, digestive ability, and microbiota composition in hepatopancreas of Crassostrea gigas were analyzed. The resu...     

祁连山冰川服务价值评估及其时空特征

冰川为干旱区人类福祉和社会经济发展提供必不可少的资源与服务,开展冰川服务价值评估及时空特征研究对于区域社会经济可持续发展和环境保护具有重要意义.基于祁连山第一次和第二次冰川编目数据,通过构建冰川服务价值评估体系,并结合单位面积服务价格法、价值当量因子法和冰川服务价值变化指数等方法,评估祁连山冰川服务价值及时空变化.结果...