4CLIFFORD L.Big data:How do your data grow?[J].Nature,2008,445(4):28-29.
5REICHMAN O,JONES M,SCHILDHAUER M.Challenges and opportunities of open data in ecology[J].Science,2011,331(6018):703-705.
6GOODCHILD M F,GUO H D,ANNONI A,et al.Next-generation digital earth[J].Proc.Natl.Acad.Sci.USA,2012,109:11088-11094.
7KITCHIN R.Big data and human geography:Opportunities,challenges and risks[J].Dialogues in Human Geography,2013,3(3):262-267.
8GOODCHILD M F.Citizens as voluntary sensors:spatial data infrastructure in the world of Web2.0[J].International Journal of Spatial Data Infrastructures Research,2007(2):24232.
9MILLER H J,GOODCHILD M F.Data-driven geography[J/OL].http://link.springer.com/article/10.1007/s10708-014-9602-6/fulltext.html,2014.
10BRISTOL S,EULISS N H,NATHANIEL J L,et al.Science strategy for core science systems in the U.S.geological survey,2013-2023[EB/OL].http://pubs.usgs.gov/of/2012/1093/1of2012-1093.pdf.2012-06-04/2014-01-08.