%0 Journal Article
%T The impact of the soil CO2 concentration under different types of vegetation on landscape in caves<br>不同植被类型覆盖下土壤CO2浓度对洞穴景观的影响
%A WANG Jing
%A SONG Lin-hu
%A XIANG Chang-guo
%A ZHANG Ping-jiu
%A LIANG Fu-yuan
%A <br>王静
%A 宋林华
%A 向昌国
%A 张平究
%A 梁福源
%J 地理研究
%D 2004
%I 
%X By analyzing the forming process of the cave landscape the authors think that the change of the CO 2 solubility in the water entering into the cave is vital to the formation of the cave landscape.And the temperature and partial pressure of CO 2 are the key elements to play the role on it. Calculation indicates that when the cave air CO 2 concentration is within 1800ppm the latter is the most important element to the landscape formation. The soil CO 2 is the major source of CO 2 in the cave water: Firstly it facilitates the formation of the soil water into carbonic acid water and when the water contacts with the carbonate rock above the cave the solution chemical reaction will happen. This action will provide the Ca 2 for the cave sediments. Secondly the soil CO 2 concentration will affect the CO 2 concentration directly in the cave water. From the experts' views the soil CO 2 mainly comes from the respiration of the vegetation the amount of the microorganism and the atmosphere outside the cave. Our field work also indicates that vegetation is one of the most important elements that control the soil CO 2 concentration and its distribution. We do the research in the Yaolin cave by comparing the effect of different CO 2 concentrations to simulate the different CO 2 concentrations under different types of vegetation dealing with the cave landscape. The conclusion is that when the soil CO 2 concentration is higher it will be good to the cave landscape protection and development.That is to say the cave landscape covered by the vegetation is much better than the one covered poorly. But if the CO 2 concentration is too high the soil CO 2 can filter into the cave through rock slot and make the cave water keep the acid character to dissolve the old landscape sediments and the dissolved views are formed.
%K soil CO
%K 2concentration
%K vegetation
%K dripping water
%K cave landscape<br>土壤CO2
%K 浓度
%K 植被
%K 洞穴滴水
%K 洞穴景观
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=E62459D214FD64A3C8082E4ED1ABABED5711027BBBDDD35B&cid=869B153A4C6B5B85&jid=C0C75E88BA2EE501C8298896F64A711F&aid=09612490A45687B5&yid=D0E58B75BFD8E51C&vid=EA389574707BDED3&iid=CA4FD0336C81A37A&sid=4F2F18DD6F870C2C&eid=E44E40A2398D4F2A&journal_id=1000-0585&journal_name=地理研究&referenced_num=6&reference_num=16