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| 1 | On the Karst Ecosystem显示文摘In this paper the author gives a definition of the karst ecosystem and discusses the characteristics of the karst environment and karst ecosystem and the relationship between life and the karst environment. Finally he clarifies the structure, driving force and functions of the karst system. | Yuan Daoxian | 2001 | Acta Geologica Sinica(English Edition)2001，75，3： | 41 |
| 2 | Carbon Fluxes and Sinks:the Consumption of Atmospheric and Soil CO_2 by Carbonate Rock Dissolution显示文摘大陆人区域的碳酸盐岩石露头盖子 9%16% 并且溶解的无机的碳(DIC ) 的主要来源在河边被转移到海洋,后果他们的溶解。当前的评价建议流动在 0.10.6 PgC/a 之间掉落。拿中间的值(0.3 PgC/a ) ,它等于陆上的植被网络碳的 18% 当前的估计下沉, 38% 土壤碳下沉。在中国,从碳酸盐岩石溶解的碳流动被估计是 0.016 PgC/a,它占 21% , 87.5%150% 和 2.3 次森林,灌木和草地分别地捕捞碳水池,以及土壤碳水池流动的 23%40% 。碳酸盐溶解对环境、气候的变化敏感,率密切与降水正在被相关,温度,另外与土壤和植被盖子。水里的 HCO3 被水生植物光合作用影响,被变换成文档和停靠港的 HCO3 部分地结果,它可以由碳酸盐岩石溶解提高碳隐遁的潜力。这碳的可能的周转时间粗略地等于海水周期(2000a ) 的。由碳酸盐岩石溶解的 atmospheric/soil CO2 的举起因此在全球碳周期起一个重要作用,是最重要的水池之一。主要研究需要是更好从碳酸盐矿物质降水与海洋的来源相比评估这个水池的网效果。 | CAO Jianhua YUAN Daoxian Chris GROVES HUANG Fen YANG Hui LU Qian | 2012 | Acta Geologica Sinica(English Edition)2012，86，4： | 20 |
| 3 | Groundwater quality and land use change in a typical karst agricultural region:a case study of Xiaojiang watershed,Yunnan显示文摘Taking the typical karst agricultural region, Xiaojiang watershed in Luxi of Yunnan Province as a research unit, utilizing the groundwater quality data in 1982 and 2004, the aerial photos in 1982 and TM images in 2004, supported by the GIS, we probe into the law and the reason of its space-time change of the groundwater quality over the past 22 years in the paper. The results show: (1) There were obvious temporal and spatial changes of groundwater quality during the past 22 years. (2) Concentrations of NH +4, 2? SO 4, NO 3?, NO 2?, Cl ?and the pH value, total hardness, total alkalinity increased significantly, in which + NH 4, NO 3?, and NO ?2of groundwater exceeded the drinking water standards as a result of non-point pollution caused by the expansion of cultivated land and mass use of the fertilizer and pesticide. (3) Oppositely, Ca2+ and HCO 3?showed an obvious decline trend due to forest reduction and degradation and stony desertification. Meantime, there was a dynamic relation between the groundwater quality change and the land use change. | JIANG Yongjun YUAN Daoxian XIE Shiyou LI Linli ZHANG Gui HE Raosheng | 2006 | Journal of Geographical Sciences2006，16，4： | 14 |
| 4 | Formations of groundwater hydrogeochemistry in a karst system during storm events as revealed by PCA显示文摘High-frequency samples have been collected at Jiangjia Spring, the outlet of Qingmuguan underground river system (QURS) in Chongqing in late April, 2008. The variations of hydrogeochemical compositions are found responding rapidly to storm events. Principal component analysis (PCA) of the 20 variables is employed to interpret the relationships with specific processes that control the groundwater hydrogeochemical formations. Through PCA, 84.961% of the total amount information is extracted to indicate the formations of groundwater hydrogeochemical features in QURS during storm events. The first component separates the soil erosion (i.e., increases in turbidity and concentrations of Al3+, TFe, TMn, Ba2+ and NO2?), and dilution effect (i.e., decreases in specific conductance and concentrations of HCO3?, Ca2+ and Sr2+), accounting for 41.495% of the variability in the data. The second component indicates residual fertilizers and duck’s waste from farmlands (i.e., increases in specific conductance and concentrations of Na+, NO3-, PO43-,K+and Cl-), contributing to 37.449%. The dissolution of dolomite and dolomitic limestone makes up 6.017%. During the first rainfall event, the groundwater quality is mainly affected by residual fertilizers and duck’s waste from farmlands, whereas in the second rainfall event, it is mainly affected by increased turbidity and ionic concentrations caused by soil erosion. | YANG PingHeng YUAN DaoXian YUAN WenHao KUANG YingLun JIA Peng HE QiuFang | 2010 | Chinese Science Bulletin2010，55，14： | 14 |
| 5 | Effect of microbes on karstification in karst ecosystems显示文摘The role of microbes in the karstification process was determined based on the karst dynamics,CO2 capture,and carbonate deposition.A close relationship was found among microbial activity,karst dynamics and stability,and the carbon cycle in a karst ecosystem.More in-depth studies were needed to investigate the impact of microbes on karst dynamics within different eco-envi-ronments under natural conditions to determine the response of biological organisms to a changing environment,as well as the relationship between microbial organisms and the karstification process. | LIAN Bin YUAN DaoXian LIU ZaiHua | 2011 | Chinese Science Bulletin2011，56，35： | 14 |
| 6 | Sources and migration path of chemical compositions in a karst groundwater system during rainfall events显示文摘Physical and chemical dynamics at Jiangjia Spring (JJS), the outlet of the Qingmuguan karst groundwater system in Chongqing, were monitored in situ during rainfall events to acquire a series of high-resolution data. Principal component analysis (PCA) was employed to identify the sources of chemical compositions in the karst groundwater. The coefficients of variations (CVs) of the physical and chemical data of JJS were utilized to interpret the migration path of the chemical compositions. The results showed that water-rock interactions, agricultural activities, and soil erosion were the main sources of the groundwater chemical compositions. Ions of potassium, sodium, nitrate, chloride and phosphate from agricultural activities together with ions of calcium, magnesium, strontium and bicarbonate derived from carbonate dissolution appear to be stored and regulated by the karst unsaturated zone in features such as fissures, pores and solution cracks. The concentrations of the ions remained relatively stable and they showed low CVs owing to their migration by diffuse flow to recharge the underground river. In contrast, concentrations of ions such as total iron, total manganese and aluminum from soil erosion were unstable and showed high CVs owing to their migration by overland flow to recharge the underground river directly via sinkholes. During heavy rainfall events, the nutrients from agricultural activities and sediment from soil erosion could quickly impair the aquatic ecosystem and pose serious threats to water quality. Therefore, it is necessary to reinforce management of the ecological system for better control of the influx of mass nutrients into the karst aquifer system. | YANG PingHeng YUAN DaoXian YE XuChun XIE ShiYou CHEN XueBin LIU ZiQi | 2013 | Chinese Science Bulletin2013，58，20： | 14 |
| 7 | Identifying the Sources of Solutes in Karst Groundwater in Chongqing,China:a Combined Sulfate and Strontium Isotope Approach显示文摘从石灰岩地区常见的地形的地下水地下的溪流在世界喝水供应,和石灰岩地区常见的地形水的 hydrochemical 特征的很重要的来源之中被自然环境和人影响。因此, hydrochemistry 的学习和它的溶质是来源是很重要的保证生活支持系统的正常函数。在这份报纸, thirtyfive 代表石灰岩地区常见的地形地下水样品从不同含水土层(石灰石和白云石) 被收集,各种各样的陆地使用录入重庆跟踪溶质和相对 hydrochemical 过程的来源。在重庆的石灰岩地区常见的地形地下水的 Hydrogeochemical 类型主要具有 CaHCO3 类型或 Ca (Mg ) HCO3 类型。然而,石灰岩地区常见的地形地下水的一些 hydrochemical 类型是 K+Na+CaSO4 类型(G25 地点) 或 CaHCO3+SO4 类型(G26 和 G14 地点) ,显示这些地点的 hydrochemistry 可能被人为的活动或唯一的地质的特征强烈影响。学习地下水的溶解 Sr 集中从 0.57 ~ 15.06 mmol/L ,并且 87Sr/86Sr 从 0.70751 ~ 0.71627 变化了。34SSO42 掉进 6.821.5 的一个范围,与 5.6 的吝啬的价值。87Sr/86Sr 的变化和地下水样品的 Sr 价值显示 Sr 元素被捱过石灰石,白云石和硅酸盐岩石控制。然而, 87Sr/86Sr 对 Sr2+/ 的数字[K++Na+] 证明人为的输入显然也贡献了 Sr 内容。为跟踪详细人为的效果,我们跟踪了石灰岩地区常见的地形地下水根据潜在的硫酸盐来源的 34S 价值在重庆取样的收集的溶质的来源。34S 的变化和地下水样品的 1/SO42 价值显示大气的酸免职(AAD ) ,石膏(GD ) 的溶解,硫化物矿物质(OS ) 的氧化或人为的输入(SF:污水或化肥) 在石灰岩地区常见的地形地下水贡献了溶质。到在重庆石灰岩地区常见的地形区域的地下水的硫化物矿物质,大气的酸沉积物和人为的输入的氧化的影响是普遍的。 | PU Junbing YUAN Daoxian ZHANG Cheng ZHAO Heping | 2012 | Acta Geologica Sinica(English Edition)2012，86，4： | 9 |
| 8 | Foreword for the special topic “Geological Processes in Carbon Cycle”显示文摘Discussions of the relationship between global climate change and the increase in atmospheric greenhouse gas concentration have attracted public attention to the Earth's carbon cycle. The | YUAN DaoXian Institute of Karst Geology,Chinese Academy of Geological Sciences,Karst Dynamic Laboratory,Ministry of Land and Resources,Guilin 541004,China | 2011 | Chinese Science Bulletin2011，56，35： | 5 |
| 9 | Carbon dioxide degassing flux from two geothermal fields in Tibet,China显示文摘在地质的时间规模上,排除的土在大气的二氧化碳(CO_(2) ) 上有重要影响集中,它是全球碳周期模型的一个重要部件。在西藏,结构的条件和联系普遍地热的系统导致在地热的水移植期间排除的二氧化碳。我们在西藏的高原上描绘了二块地热的地的 hydrochemical 条件。地热的水的化学作文被 K 长石和钠长石控制。Langjiu 地热的地里的地热的水是钠氯化物类型, Dagejia 地热的地的那些是钠酸式碳酸盐类型。在二个 hydrogeothermal 系统以内的 CO_(2) 部分压力的模拟证明排除的 CO_(2) 从含水土层发生在热水移植期间到表面。来自 Langjiu 地热的地的二氧化碳排除流动被估计是 3.6 吗? | SHEN LiCheng WU KunYu XIAO Qiong YUAN DaoXian | 2011 | Chinese Science Bulletin2011，56，35： | 5 |
| 10 | Stable Carbon Isotope Geochemical and Hydrochemical Features in the System of Carbonate-H_2O-CO_2 and Their Implications—Evidence from Several Typical Karst Areas of China显示文摘On the basis of hydrochemical observation and experimental calculation, the features of stable carbon isotope geochemistry in the karst dynamic systems of the Guilin Karst Experimental Site, Huanglong Ravine and Wujiangdu Dam Site are summarized in this study. Furthermore, an attempt has been made to solve several geochemical problems, such as the origin of CO2 in the system, kinetic fractionation of carbon isotopes during calcite deposition, hydrochemistry and formation of tufa, and carbon-14 dating of tufa of hydrothermal origin. The results show that three kinds of karst dynamic system can be distinguished: (1) the shallow system, such as the Guilin Karst Experimental Site, in which soil CO2 provides the an active agent for karst processes; (2) the geothermal system, such as the Huanglong Ravine, in which metamorphic or/ and juvenile CO, is the source of activity for karst; (3) the anthropogenic system, such as the Wujiangdu Dam Site, in which the stable carbon isotope geochemical and hydrochemical | Liu Zaihua, Yuan Daoxian and He Shiyi Institute of Karst Geology, 40 Qixing Rd., Guilin, Guangxi 541004 | 1997 | Acta Geologica Sinica(English Edition)1997，71，4： | 4 |
| 11 | A high-resolution, absolute-dated Holocene and deglacial Asian monsoon record from Dongge Cave, China显示文摘 | Carolyn A. Dykoski R. Lawrence Edwards Hai Cheng Daoxian Yuan Yanjun Cai Meiliang Zhang Yushi Lin Jiaming Qing Zhisheng An Justin Revenaugh | 2005 | Earth and Planetary Science Letters2005，，1： | 3 |
| 12 | A study of the activity and ecological significance of carbonic anhydrase from soil and its microbes from different karst ecosystems of Southwest China 显示文摘 | Li Wei Yu Longjiang Yuan Daoxian | 2005 | Plant and Soil2005，272，12： | 1 |
| 13 | The carbon cycle in karst显示文摘 | YUAN DAOXIAN | 1997 | Z Geomorph N F Suppl-Bd1997，108，： | 1 |
| 14 | A 6000-year high-resolution climatic record from a stalagmite in Xiangshui Cave,Guilin,China显示文摘 | Meiliang Zhang Daoxian Yuan Yushi Lin | 2004 | The Holocene2004，14，5： | 1 |
| 15 | Rock desertification in the subtropical karst of south China显示文摘 | Yuan Daoxian | 1997 | Z Geomorph N F1997，108，： | 1 |
| 16 | Timing,Duration,and Transitions of the Last Interglacial Asian Monsoon显示文摘 | Yuan Daoxian ChengHai Edwards R L | 2004 | Science2004，304，： | 1 |
| 17 | The carbon Cycle in karst显示文摘 | Yuan Daoxian | 1997 | Zeitschrift fir Geomor- phologies Neue Folge1997，108，： | 1 |
| 18 | Rock desertification in the subtropical karst of south China显示文摘 | Yuan Daoxian | 1997 | Z Geomorph N F1997，108，： | 1 |
| 19 | Rock desertification in the subtropical karst of south China显示文摘 | Yuan Daoxian | 1997 | Zeitschrift für Geomorphologie1997，108，： | 1 |
| 20 | Timing,duration,and transitions of the last interglacial Asian monsoon显示文摘 | Yuan Daoxian Cheng Hai Edwards R L | | 0，，23： | 1 |
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