Study On Physical And Chemical Properties And Corrosion Of Surface Karst Springs On Vertical Limatic Zones

Karst environment system is made of five basic system compositions, soil of the lava and sedentary product, karst shape, karst area surface and ground water air envelope, karst water and karst biotic community. The karst water is connection belt of the karst area aerospHere, the hydrospHere, the lithospHere and the biospHere four great-circle level. It is also the most active factor of karst ecosystem..Its pHysics and chemistry nature can reflect the karst dynamic system's characteristic directly. The karst process is carried on a completely open system, which is mutual lotus root joint process of the carbon, the water and the calcium circulation. It is connected with lithospHere, hydrospHere, aerospHere and biospHere closely, and keenly induction and feedback to environment change.We begin from the material and energy transfer of the lithospHere, the hydrospHere, the aerospHere, and the biospHere contact surface. We have grasped pH value, the conductivity and the chemical element's difference of the different highly karst spring water on subtropics mountain through automatic monitor which is laid in the research area and the analysis result indoor. We also promulgate the difference of its change rule through data statistical analysis. Then study karst dynamic system's characteristic and environment influence to karst dynamic system's on different elevation.The paper is divided into seven parts:The first part is the introduction part. Including paper selected topic background, Domestic and foreign research present situation and progress, Research content, meaning and fundamental research method.The second part is the karst dynamic system's basic survey. Including definition of karst dynamic system, Structure and boundary, function of karst dynamic system, characteristic of Karst dynamic system.The third part is survey on the studied area. Including growth environment background of karst ecosystem on Jinfo Mountain, pHysical geograpHy survey about Bitan spring and Shuifang spring.The fourth part is examination and the result analysis to the water seepage pH value and the conductivity. Analyzing diurnal variation rule of the pH value and the conductivity under the normal climate condition, the rainstorm condition and the weak rainfall condition. Analyzing month change and seasonal variation rule of pH value and conductivity. From short time and long time angle, Analyzing the difference of change rule about karst water seepage pH and the conductivity in the different altitude and the reason difference.The fifth part is the water seepage hydrochemistry examination and the result analysis. Analyzes the content and change of Na⁺,K⁺,HCO₃^-,Ca²⁺,and Mg²⁺in two spring water,and water seepage hydrochemistry type ,and computation of Sic and SI_D about spring waterThe sixth part is discussion. Analysis the characteristic of karst process, actuation factor of karst process, and reason for change of water seepage conductivity. Show that the most prominent characteristic of the dynamic system is its sensitivity to the environmental variation.The seventh part is conclusion and problem analysis...