Dynamic assessment of the value of vegetation carbon fixation and oxygen release Qinghai Lake basin.pdf

Acta Ecologica Sinica 37 (2017) 79–84 Contents lists available at ScienceDirect Acta Ecologica Sinica j ourna l homepage: www.e lsev ie r .com/ locate /chnaesDynamic assessment of the value of vegetation carbon fixation and oxygen release services in Qinghai Lake basinTao Zhang, Guangchao Cao ?, Shengkui Cao, Xiaoge Zhang, Jing Zhang, Guangzhao Han a College of Life and Geographical Science, Qinghai Normal University, Xining 810008, China b Qinghai Province Key Laboratory of Physical Geography and Environmental Process, Xining 810008, China? Corresponding author at: College of Life and Geogra University, Xining 810008, China. E-mail address: caoguangchao@ (G. Cao). /10.1016/j.chnaes.2016.12.005 1872-2032/? 2016 Published by Elsevier B.V. on behalf ofa b s t r a c ta r t i c l e i n f oArticle history: Received 21 October 2015 Received in revised form 18 December 2015 Accepted 21 May 2016Studies on ecosystem service function have an important significance for analyzing and understanding global warming. With the introduction of geographic information system (GIS) and remote sensing (RS) technologies for the evaluation of ecosystem service function, the scope for analysis has been widening. Increasing number of researchers use these technologies to quantify the value of ecosystem service functions and reveal their spatial-temporal variability. By using the data for the interpretation of five RS images and net primary productiv- ity (NPP) in Qinghai Lake basin, we assessed the value of vegetation carbon fixation and oxygen release services and revealed their dynamic variation in this basin. The result suggested that the average values of vegetation car- bon fixation and oxygen release services in Qinghai Lake basin between 1987 and 2010were spatially distributed in a ring shape around the Qinghai Lake and decreased from southeastern to the north and northwestern regions; the northwestern areas had the lowest value. The vegetation carbon fixation value between 1987 and 2