CLIMATE CHANGE AND NATURAL VEGETATION IN CHINA

The climate change scenarios due to the human activity for East Asia and China by 2050 have been estimated bymeans of a simple global social-economic-climate-impact model combined with seven GCMs.The climate change sce-narios present that the annual mean temperature might increase obviously,by about 1.4℃,and the annual total precipi-tation might increase by about 4% in whole China in comparison with the present climate.The change of the precipita-tion might be much smaller than that of the temperature.The potential impacts of human activity-induced climate change on natural vegetation in China were estimated us-ing the vegetation-climate model developed specially for Chinese vegetation types and different climate change scenariosderived from seven GCMs for 2050.All scenarios suggest a great change in natural vegetation although details of pre-dicted types vary among the scenarios.There will be a northward shift of the vegetation types,with increase in the arealextent of tropical rainforests and decrease of the cold temperate coniferous forest and tundra.Consequently,consideringthese changes and shifts,especially in combination with the likely negative balance of precipitation andevapotranspiration,the moisture stress,i.e.,less water availability arises,the possible influences of climate change onChinese agriculture is also assessed roughly in this paper.     

Isotope Hydrogeological Study of Karst Water in the Lu'' an Mining District and the Xin''ancun Spring Basin, Shanxi

Isotope hydrogeological study has shown that the water supply exploration area in the Lu' an coal mine may be divided into four zones of hydrodynamic conditions and the Xin'ancun Spring Basin where the mine is located may be divided into three Middle Ordovician karst water systems. This paper discusses the features of recharge, runoff and discharge of karst water in various zones, and hydrogeological parameters such as the age, flow rate and natural recharge of karst water have been estimated.     

我国饮用天然矿泉水开发现状及主要问题

本文主题为饮用天然矿泉水。碳酸矿泉水，硅酸矿泉水，锶矿泉水是我国饮用天然矿泉水的主要类型，约占全国已发现矿泉水的９５％。矿泉水主要生产国及消费国都在欧洲。亚洲的日本、韩国等国的矿泉水的产量也在大幅度增长。而我国矿泉水产量近年也以较大的速度增长，但只有名牌产品才有可观的经济效益。     

榆次西窑饮用天然矿泉水的形成条件及水质特征

矿泉水赋存于沁水向斜北部东翼三叠系砂页岩地层中，１９８７年和１９９３年经山西地矿局和地矿部组织鉴定，水质符合《饮用天然矿泉水》国家标准（ＧＢ８５３７－８７），属含锶－偏硅酸重碳酸－钠钙型矿泉水。Ｙｈ＿１、井、Ｋ＿１井均已开发利用，生产瓶装天然矿泉水和矿泉水系列饮料。     

太谷大佛山锶—偏硅酸饮用天然矿泉水

太谷大佛山矿泉水为锶—偏硅酸重碳酸—钙钠镁型低矿化度优质饮用天然矿泉水，它形成于三叠系铜川组砂岩地层中。开发环境优越。     

武乡南沟锂—锶优质饮用天然矿泉水

南沟矿泉水自沁水盆地三叠系二马营组砂页岩中溢出，自流量４Ｌ／ｓ，水中含锂０．４２３ｍｇ／Ｌ，锶０．４５０ｍｇ／Ｌ。１９９２年２月经山西省矿产储量委员会鉴定属锂—锶重碳酸—钙型优质饮用天然矿泉水。泉区自然环境好，无工业污染，是优良的矿泉水生产基地。     

新型饮料：果汁型天然矿泉水

以沁县七星泉饮用天然矿泉水为水基，以野生酸枣为原料，研制出了ＶＣ果汁型天然矿泉水饮料。该饮料转让给沁县唯思可达公司后已批量生产，并投放市场。从目前饮料市场的需求看，果汁矿泉饮料的发展前景广阔。     

强夯碎石柱法处理淤泥质粘土地基

常规强夯法处理淤泥质粘土地基效果不太理想。本文论述了强夯碎石柱法的原理及应用的可行性,对夯后形成复合地基的沉降、固结,稳定性等问题用多种方法进行了计算,讨论了施工中可能出现的情况。国内外成功的实例表明该法在处理饱和软粘土地基时有着良好的应用前景。