地理学报 ›› 2014, Vol. 69 ›› Issue (s1): 83-85.doi: 10.11821/dlxb2014S016

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白洋淀蝗区典型样点2002年土壤调查数据

石瑞香   

  1. 中国科学院地理科学与资源研究所, 北京 100101
  • 收稿日期:2014-03-16 修回日期:2014-06-20 出版日期:2014-12-26 发布日期:2020-04-07

Soil sample data for locust plague analysis around Baiyangdian Lake in 2002

XU Xinliang1, ZHAI Mengyuan2, LIU Luo3, 4   

  1. 1. Institute of Geographic Sciences and Natural Resources Research, CAS, Beijing 100101, China;
    2. College of Resources and Environmental Science, Nanjing Agriculture University, Nanjing 210095, China;
    3. Xinjiang Institute of Ecology and Geography, CAS, Urumqi 830011, China;
    4. University of Chinese Academy of Sciences, Beijing 100049, China
  • Received:2014-03-16 Revised:2014-06-20 Published:2014-12-26 Online:2020-04-07

摘要: 白洋淀蝗区典型样点2002年土壤调查数据是在完成科技部973“农作物重大病虫害成灾机理及调控基础的研究”项目的过程中,进行调查、采集,并经过室内理化分析得到的。该数据是作者在2002年6月21-22日,根据2001年6月蝗灾发生情况,对白洋淀蝗区典型样点进行的土壤调查数据。该数据为地理信息系统数据的.shp格式,数据量约10.5 KB。该数据包括土壤质地、pH值、含水量和含盐量等信息。

关键词: 白洋淀, 蝗虫, 土壤, 典型样地, 数据

Abstract: The winter fallow land is significant to agriculture in Yangtze River, because it could be used to increase the grain yield. The information included in the dataset of winter fallow land in middle and lower reaches of Yangtze River (WFL_MLYR) is helpful for understanding agriculture production condition, exploring agriculture production potential and keeping agriculture development sustainable. The dynamic threshold method based on time series MODIS NDVI is an useful practical method to extract spatial information of winter fallow land. The WFL_MLYR are spatial data of winter fallow land from 2007 to 2008 with a 1km spatial resolution. It includes the data on mature date, sowing date and winter fallow fields. The extraction data were compared with the actual result from agricultural meteorological observation station. The accuracy of mature date is more than 91%, and that of sowing date is 86% approximately.

Key words: middle and lower reaches, Yangtze River, winter fallow land, dataset