Research Articles

Extraction and Dynamic Spatial-Temporal Changes of Grassland Deterioration Research Hot Regions in China

  • 1. Institute of Geographic Sciences and Natural Resources Research, Chinese Academy of Sciences, Beijing 100101, China;
    2. College of Public Administration, Nanjing Agricultural University, Nanjing 210095, China

Received date: 2017-04-29

  Revised date: 2017-06-28

  Online published: 2017-07-30

Supported by

National Key Research and Development Plan Program (2016YFC0503701, 2016YFB0501502) and Key Project of High Resolution Earth Observation System (00-Y30B14-9001-14/16)


The authors use a web crawler to retrieve all periodical articles from CNKI between the 1950s and 2016 and then parse the abstracts of 293368 articles about grassland deterioration by word segmentation, location matching and other methods. The authors also construct a research hot regions extraction model of grassland deterioration in China based on a comprehensive research hot regions index of toponyms and then analyze the spatial pattern and dynamic change in research hot regions of grassland deterioration in China. The research shows the following: (1) The spatial heterogeneity of grassland deterioration in China can be effectively described by a model of grassland deterioration based on the comprehensive research hot regions index. (2) The research hot regions of grassland deterioration are mainly distributed in most regions of Inner Mongolia, Xinjiang, Qinghai, Tibet, Gansu and other provinces. The northeastern region of Inner Mongolia (such as Hulunbeier) and the eastern region of Inner Mongolia (such as Xilin Gol, Chifeng and Wulanchabu) are significant hot regions in the study of grassland deterioration. (3) The number of high research hot regions increases from 81 in the 1950s to 99 in the 2000s; the area increases from 1.038 million km2 to 1.146 million km2. The degree of hot for grassland deterioration research in 197 counties showed an upward trend. This paper also discusses the relationship between the region of research hot regions and the region of grassland deterioration and then indicates the differences between them in time matching, space matching and concept matching.

Cite this article

HU Yunfeng, HAN Yueqi, ZHANG Yunzhi, ZHUANG Yuan . Extraction and Dynamic Spatial-Temporal Changes of Grassland Deterioration Research Hot Regions in China[J]. Journal of Resources and Ecology, 2017 , 8(4) : 352 -358 . DOI: 10.5814/j.issn.1674-764x.2017.04.006


[1] AGRE G H, MAHAJAN N V. 2015. Keyword Focused Web Crawler. 2015 2nd International Conference on Electronics and Communication Systems (Icecs) , 2015: 1089-1092.
[2] ALZOABI U S, ALOSAIMI N M, BEDAIWI A S, et al . 2013. IEEE. Parallelization of KMP String Matching Algorithm. World Congress on Computer & Information Technology
[3] Batunacun, HU Yunfeng, YAN Yan, et al .. 2012. The Variations and Its Spatial Pattern of Grassland Changes in Xilinguole from 1975 to 2009. Resource Science, 34(6): 1017-1023. (in Chinese).
[4] BEALL J. 2010. Geographical research and the problem of variant place names in digitized books and other full-text resources. Library Collections Acquisitions & Technical Services, 34(2-3): 74-82.
[5] CHENG Gang, LU Xiaoping. 2014. Matching Algotithm for Chinese place Names by Similarity in Consideration of Semantics of General Names for Places. Acta Geodaetica et Cartographica Sinica, 43(4): 404-410+ 418. (in Chinese)
[6] HANLP. 1.1.2. the web site: index.html#.
[7] Heng Z, Yang W, Jinghui Q U, et al . 2008. Chinese Word Segmentation Method Based on Dictionary and Frequency of the Words. Microcomputer Information, 24(3): 239-241. (in Chinese)
[8] LI L, JIANG Y E, LIN J, et al. 2016. Improved algorithm KMPP based on KMP. Computer Engineering and Application, 52(8): 33-37.
[9] LI S, VERBURG P H, LV S, et al. 2012. Spatial analysis of the driving factors of grassland degradation under conditions of climate change and intensive use in Inner Mongolia, China. Regional Environmental Change, 12(3): 461-474.
[10] LI Yanhong, PANG Xiaoping, LI Haiting. 2011. Design and Matching Research of Geographical Name Dictionary. Journal of Geomatics, 36(2): 52-54. (in Chinese)
[11] LI zhaohang, GUO feng-hua, LI ren-jie, et al . 2011. Method and Case Study of Hot-Toponym Extraction from Mass Amount of Internet Travel Blog Text. Geography and Geo-Information Science, 31(01): 68-73. (in Chinese)
[12] LIANG Xitao, GU Lei. 2015. Study on Word Segmentation and Part-of- speech Tagging. COMPUTER TECHNOLOGY AND DEVELOPMENT, 25(2): 175-180. (in Chinese)
[13] LIAO Yilan, WANG Jinfeng, MA Jiaqi, et al . 2008. Placename Data Matching Based on BPM-BM Algorithm. Bulletin of Surveying and Mapping, 2008(06): 22-25. (in Chinese)
[14] LIN Erda, XIONG Wei, JIANGCUN Wangzha. 2006. Grassland degradation in Northern Tibet based on remote sensing data. Journal of Geographical Sciences, 60 (6): 965-973. (in Chinese)
[15] MO Jianwen, ZHENG Yang, SHOU Zhao-yu, et al . 2013. Improved Chinese word segmentation method basd on dictionary. Computer Engineering and Design, 34(5): 1802-1807. (in Chinese)
[16] TANG Xuri, CHEN Xiaohe, ZHANG Xueying. 2010. Research on Toponym Resolution in Chinese Text. Geomatics and Information Science of Wuhan University, 35(8): 930-935+982. (in Chinese)
[17] WANG Cheng, LIU Jingang. 2006. An Improved String Matching Algorithm. Computer Engineering, 32(02): 62-64. (in Chinese)
[18] WANG Junchao, SUN Qun, XIAO Jihua, et al . 2013. Research on Theory of Similarity in Place Name Matching. Journal of Geomatics Science and Tecnology, 30(6): 643-646. (in Chinese)
[19] XIAO J. 2014. Method of Recognition and Match of Place Name Based on Statistic. J ournal of Geomatics Science and Technology, 31(4): 408- 412.
[20] YE Yunming, YU Shui, MA Fan-yuan, et al . 2002. On Distributed Web Crawler: Architecture, Algorithms and Strategy. Acta Electronica Sinica, 30 (s1): 2008-2011. (in Chinese)
[21] YILAN L, JINFENG W. 2009. A method for matching Chinese place- name data. Proceedings of SPIE. 2009: 71461R-71461R-9
[22] YU juan, LIU qiang. 2015. Survey on topic-focused Web crawlers. Computer Engineering & Science, 37(2): 231-237. (in Chinese)
[23] YUCHUN Y A N, HAIPING T. 2008. S Differentiation of related concepts of grassland degradation. Acta Prataculturae Sinica, 17(1): 93-99.
[24] YUE shuping, ZHANG shu-wen, YAN ye-chao. 2007. Temporal and Spatial Distribution of Grassland Degradation in Eastern Inner Mongolia: A Case Study in balinyouqi. Resource Science, 29(6): 154-161. (in Chinese).
[25] ZHANG Chunju, ZHANG Xueying, ZHU Shaonan, et al . 2011. Method of Toponym Database Updating Based on Web Crawler. JOURNAL OF GEO-INFORMATION SCIENCE, 13(4): 492-499. (in Chinese)
[26] ZHANG Yili, LIU Linshan, BAI Wanqi, et al . 2006. Grassland Degradation in the Source Region of the Yellow River. ACTA GEOGRAPHICA SINICA, 61(6): 3-14. (in Chinese)