A System Study On The Geological Environment And Water Cycle At The Jiuzhaigou Valley

As the hydrologic cycle in Jiuzhaigou core scenic spot is a tourist card soul of Sichuan province, "weather or not water of the Jiuzhaigou would disappear" had be pay close attention to by personalities of various circles. This thesis supported by the applied research topic about Jiuzhai-huanglong core scenic resort, which determine landscape geological environment and hydrologic cycle system model, and building-up a monitoring system, and how to protect or resume this scenic spot. Such topic is one of the Sichuan province government tenth-five-years important tackle key problems in science and technology task. On the premise of the site investigation at Jiuzhaigou core scenic landscape, the thesis comprehensive utilization with RS technology, physical prospecting technology, and indoor test research and so on. Then proceeds from different angles such as site reconnaissance, door testing and research of study, this thesis make a systematic study about hydrologic cycle and law of water transform in Jiuzhaigou core scenic spot. In the end, the thesis tries to searching set-up the balanced model for scenic water cycle and forecast the trend of scenic evolution. The above works are for the government developing tourist reference at Jiuzhaigou scenic.The thsis procceds from the geological survey in Jiuzhaigou core scenic, then systematics the form of water scenic and the dirtibute features different from the terrain and its features, geological structure, stratum and properties of its rocks. Secondly, explain the bases of over watershed in Jiuzhaigou are WN structural fractures, folds and Paleozoic krast layer. Jiuzhai valley is formed from the laster fluvial denudation that based on early glacier U valley. Water supply Changhai to Rize valley by NW failure structure. Water supply Wucaichi Zezhawa to section valley springs in Rize protect station in Rize valley section. Water supply from Danzhu valley to Wuhuahai section in Rize valley. Then it laid spcial stress on analysing the relation between atmosphere precipitation, surface water and ground water. According to its characters, the author calculates water balance of Changhai and Xionmaohai. There are indication that Jiuzhaigou scenic spot is a separate unit of hydrological circulation which most reception atmosphere precipitation. In 2005, because amount of precipitation in Jiuzhaigou is 48027. 95×10~4m~3 and total runoff in Jiuzhaigou valley exit is 39807. 71×10~4m~3, and evaporation capacity is 8220. 24×10~4m~3, so that it are equilibration between water output and flooding quantity in Jiuzhaigou scenic spot. Subsequently, the author calculate the periodic change of temperature in Jiuzhaigou scenic spot is 51 years and .at the highest temperature section now. It is similar to the temperature that the periodic change of precipitation is 24 years also, and at the enhancing section now. On the whole, water yield of Jiuzhaig6u core scenic are basically trend to stable state. In the end, using APH(Analytical Hierarchy Process) and comprehensive consideration 8 evaluate factors such as rocks , structure and so on, to evaluate the stability of the Jiuzhaigou scenic water landscape, the author reach a conclusion that Jiuzhaigou scenic be at the geological environment stationary phase now.