Journal of Resources and Ecology ›› 2015, Vol. 6 ›› Issue (4): 230-236.DOI: 10.5814/j.issn.1674-764x.2015.04.006

• Karst Ecosystem • Previous Articles     Next Articles

The Ecological Importance and Influence of Land Use on Carbonic Anhydrase Activity of Waters in the Upstream Section of the Wujiang River Basin

PAN Weizhi1*, SILA Onesmus Nzung’a1,4*, LI Wei1,4*, HUANG Qibo2,3, SHEN Taiming1, WANG Chenwei1, QIN Xiaoqun2,3 and YU Longjiang1**   

  1. 1 Institute of Resource Biology and Biotechnology, Department of Biotechnology, College of Life Science & Technology, Huazhong University of Science & Technology, Wuhan 430074, China;
    2 Institute of Karst Geology, Chinese Academy of Geological Sciences, Guilin 541004, China;
    3 Key Laboratory of Karst Dynamics, Ministry of Land and Resources/Guangxi Zhuang Autonomous Region, Guilin 541004, China;
    4 Teachers Service Commission-Kenya, P.O. Box Private Bag 00100 Nairobi, Kenya
  • Online:2015-07-30 Published:2015-07-30

Abstract: Thirty-four sampling sites for surface water and twenty-seven sampling sites for ground water in areas of different land use were selected in the Wujiang River Basin, upstream section in Guizhou Province, China. Carbonic anhydrase (CA) activity in surface and ground water was analyzed and compared. The results show that CA activity was detected in all surface and ground water samples. In general, average CA activity in surface and ground water was highest from samples in arbor lands, followed by shrub lands, shrub and grass lands, agricultural lands, and residential areas. The average CA activity in ground water from arbor lands, shrub lands, and shrub and grass lands was higher than that in surface water. Water CA activity was positively correlated with HCO3concentration in surface water and ground water. These results imply that the contribution of CA in water to the karst carbon sink potential of river basins warrants further extensive and in-depth research.