排序方式： 共有3条查询结果，搜索用时 46 毫秒
1
1.
Geochemical Information Indicating the Water Recharge to Lakes and Immovable Megadunes in the Badain Jaran Desert 总被引：1，自引：0，他引：1
CHEN Jiansheng ZHAO Xi SHENG Xuefeng Wang Jiyang GU Weizu and CHEN Liang State Key Laboratory of Hydrology-Water Resources Hydraulic Engineering Hohai University Nanjing Jiangsu E-mail: jschen@hhu.edu.cn Institute of Isotope Hydrology Research Hohai University Nanjing Jiangsu Institute of Geology Geophysics Chinese Academy of Sciences Beijing 《《地质学报》英文版》2005,79(4):540-546
1 Introduction The Badain Jaran Desert, located in western Inner Mongolia, China, has a unique landscape containing 144 lakes (72 of which are still watery) with a total water area of about 23 km2, and the world’s highest stationary sand dunes with a height between 200 m and 500 m. Much attention has been paid to the water recharge of the desert in the past decade. Investigations on the resources of water system there have been performed continuously since the early 1990s, which lead to th… 相似文献
2.
玄武,是中国古代最令妖邪胆战且法力无边的神兽之一,与白虎、朱雀、玄武并称中国古代四大神兽。玄武,本意就是玄冥。武、冥,古音相通。玄,是＂黑＂的意思。冥,就是＂阴＂的意思。玄冥,起初是对龟卜的形容。龟背是黑色的,龟卜就是请龟到冥间去询问祖先,将答案带回来,以卜兆的形式显给世人。因此,最早的玄武就是乌龟。以后,玄冥的含义不断扩大。 相似文献
3.
水田在休耕期间蓄水,除了可维持水田原有之生态机能外,亦可增加土壤水分涵养与补注地下水.利用砂箱来模拟休耕田区中打入砂桩以补注地下水时,砂桩存在对灌溉水中之溶质在土壤中传输之影响.由试验结果得知当砂桩贯穿牛踏层时可增加水分入渗速率约40倍,相对的,砂桩亦加速溶质在不同土壤层间之传输速率,尤其在牛踏层下方之土壤为砂层时,其影响更为显著.因此,蓄水过程中需注意水源之品质,以避免土壤与地下水受污染. 相似文献
1