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Karst conduit flow and its hydrodynamic characteristics — Houzhai River drainage basin in Puding, Guizhou, China as an example
Lachun Wang,Yongzhan Zhang
Chinese Science Bulletin , 2001, DOI: 10.1007/BF03187235
Abstract: Conduit flow is a special geomorphologic and hydrological phenomenon in karst area. Houzhai River drainage basin in Puding, Guizhou Province is a large-scale test field in the main and broad karst area in the southern part of China, where conduit flow is a general reserve and drainage system for groundwater. Based on the great deal of field investigation and indoor research work during the 1970s–1980s, pulse tests were done four times there during 1988–1991 in wet and dry seasons. It shows that water level at each observation site changes from 10 to 1800 mm, with the larger variation in upper stream and at karst windows than in lower reaches and at each exit along subterraneous rivers. The average flow velocity in conduit system is determined within 200 – 800 m/h, with the less change from flood to dry seasons, and it is higher in principal conduits and in upper stream area. Also, the reliable divided discharge ratio among each hydrological conduit of sunken system has been got. Thus, combined with detailed field survey in this area, the river system has been exposed finally.
Drainage system of the upper unsaturated zone of a karst aquifer– a case study of the Hubelj spring catchment  [PDF]
Branka Tr?ek
Geologija , 2004,
Abstract: A drainage system and a solute transport of a karst aquifer were studied by using an indirect research method basing on natural tracers. The research of mechanisms that cause the flow and solute transport from an aquifer upper unsaturated zone was particularly stressed. This zone was observed in a catchment area of the Hubelj spring, at the experimental field site of Sinji vrh. The results provided an insight into the age structure and hydrodynamics of the karst system groundwater and produced information on the aquifer recharge, storage and discharge processes, as well as on mechanisms that affected them.

Yang Han-Kui,

生态学报 , 1991,
Abstract: To understand the biomass of forest in the karst envirnment, the harvest method has been used for determining the karst forest community in Maolan located in the south of Guizhou, China. The forest studied is a mixed evergreen and deciduous forest in the humid mid-subtropical climatic zone, It was found that the forest has a total biomass of about 146.319 to 190.918 t/ha and the oboveground plant biomasses of arborous layer, brush layer, herb layer and litter layer are 89.198, 5.747, 0.275 and 6.500 t/ha, respectively. The correlation coefficient (r) between DBH and biomass is over 0.900.

Zhang Zhaogan,Yang Jianming,Wang Xiang,Shen Ping,

地理学报 , 1997,
Abstract: A further karstlogical research including morphology, hydrogeology, hydrology and pulse test is done in an experimental area the Houzhai underground river basin, Puding county, Guizhou Province. Eight types of spatial structures are obtained by cluster analysis. These are Fenglin basin, Fenglin clay platform, revived, Fenglin doline depression, oldfenglin doling depression, Fenglin (or fengcony) valley and Fenglin depression. They have their own surface and underground structral features, so their characteristics of morphology, hydrogeology, hydrological process, hydrochemistry and pulse waves are different. By analysing these characteristics on the basis of observations it can be seen that different hydrology process curves and the respons curves of puls test may reflect distinct underground structral features. Further, it is believed that the Karst landform evolution in the basin is mainly a positive evolutionary process from Fenglin doline to Fenglin basin accoding to the study on the spatial structure. But reverse evolutionary process from fenglin basin to Fenglin doline has been formed in the western region.
The Impact of Land Use Change on Karst Water in Shuicheng Basin of Guizhou Province

JIA Yanan,YUAN Daoxian,

地理学报 , 2003,
Abstract: The paper chooses the industrial city-Shuicheng basin in Guizhou province-as research site because the karst water quality around the city has become deteriorated with land use and land cover change. The natural susceptibility of karst water system is the important factor leading to karst water pollution. But the change of land use and land cover is the main factor according to the changing data of the water quality analysis and land use change. So it is a good way to protect karst water through rational planning and managing land use and land cover.

He Zhonghua,Liang Hong,Huang Fasu,Zhao Fang,
,梁 虹,黄法苏,赵 芳

大地测量与地球动力学 , 2008,
Abstract: Twenty nine karst drainages are chosen for analysis of the five factors which affect the growth of geomorphologic type,and the choice is based on the TM image,CBERS image and DEM data which are extracted by use of RS and GIS techniques and from the ASTER image of Guizhou Province.This research procedure includes the extraction of 24 indices,data processing and multivariate regression analysis by means of softwares SPSS and MATLAB and proposing the mathmatical models for recognition of different geomorphologic type of karst drainage and then the very good recognational effect can be obtained through varience analysis and sample zone checking.
Preliminary study on types and quantitative assessment of Karst rocky desertification in Guizhou Province, China


生态学报 , 2005,
Abstract: Karst rocky desertification is a special process and phenomenon that transforms a karst area into rocky landscape resulted from almost devoid of soils and vegetation. Different carbonate rocks have different types of weathering, soil pedogenesis and characteristics of hydrology, which leads to making different karst terrains and rocky desertification. Degrees of karst rocky desertification vary differently with changes in the types of disturbance, their intensity, timing, and magnitude. Due to a lack of und...
Analysis of the impact of different landform types on low flow modulus in karst regions: a case study of rivers in Guizhou Province

WANG Zai-gao,LIANG Hong,YANG Ming-de,

地理研究 , 2002,
Abstract: Many factors affect the runoff modulus and the variation coefficients of low flow, such as climate,rock, soil, plant, landforms, and so on. In karst drainage basins, the factors of geology, topography and landforms are complicated and they affect the low flow modulus together since they influence each other and condition each other. In this paper the authors study the characteristics of low flow modulus making use of specific properties of different landforms.Firstly, landforms in karst regions are divided and digitized by means of GIS and SPSS software.All drainage basins were classified according to different types of landforms through cluster analysis in order to research the dimensions of low flow modulus in regions with different landforms types.In general,the following points are identified as: 1)the low flow modulus is smaller in regions with Fengcong landforms than Fenglin landform;2)the low flow modulus is smaller in karst regions than in non-karst regions; and 3) it is bigger in regions with mixed types of landforms than in others. Secondly, the impact of different types of drainage landform on low flow modulus are analyzed through different spatial distribution of landform types.The result is that even in karst regions with the same types of landforms,the low flow modulus would vary because of differences in spatial distribution. In a word,landform types constitute an important factor affecting low flow runoff modulus and this conclusion is essential in evaluating the value of water resource in karst regions.
Gypsum karst in China.  [PDF]
Yaoru L.,Cooper A.H.
International Journal of Speleology , 1996,
Abstract: The Peoples Republic of China has the largest gypsum resources in the world and a long history of their exploitation. The gypsum deposits range in age from Pre-Cambrian to Quaternary and their genesis includes marine, lacustrine, thermal (volcanic and metasomatic), metamorphic and secondary deposits. The gypsum is commonly associated with other soluble rocks such as carbonates and salt. These geological conditions, regional climate differences and tectonic setting strongly influence the karstification process resulting in several karst types in China. Well developed gypsum palaeokarst and some modem gypsum karst is present in the Fengfeng Formation (Ordovician) gypsum of the Shanxi and Hebei Provinces. Collapse columns filled with breccia emanate upwards from this karst and affect the overlying coalfields causing difficult and hazardous mining conditions. Gypsum karst is also recorded in the middle Cambrian strata of Guizhou Province and the Triassic strata of Guizhou and Sichuan Provinces. Gypsum-salt lake karst has developed in the Pleistocene to Recent enclosed basin deposits within the Qinghai-Xizang (Tibet) Plateau.
The influence of land use change on karst water quality of Shuicheng Basin in Guizhou Province

JIA Yanan,YUAN Daoxian,

地理学报 , 2004,
Abstract: The influence of land use and land cover on ecological environment is a focus of global change research. The paper chooses an industrial city-Shuicheng in Guizhou Province-as a study area because the karst water quality around the city is deteriorating with land use and land cover change. The natural susceptibility of karst water system is an important factor leading to karst water pollution. But land use and land cover change is also a main factor according to the chemical analysis of karst water quality and land use change. So it is a good way to protect karst water through rational planning and managing of land use and land cover.
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