Pedosphere 14(3): 363--369, 2004
ISSN 1002-0160/CN 32-1315/P
©2004 Soil Science Society of China
Published by Elsevier B.V. and Science Press
| Utilizing landsat TM imagery to map greenhouses in Qingzhou, Shandong Province, China |
ZHAO Geng-Xing1 , LI Jing1, LI Tao2, YUE Yu-De3 and T. WARNER4 |
1 College of Resources and Environment, Shandong Agricultural University, Tai'an 271018 (China). E-mail: zhaogx@sdau.deu.cn;
2 Soil and Fertilizer Working Station of Shandong, Jinan 250100 (China);
3 Agriculture Bureau of Qingzhou City, Qingzhou 262500 (China);
4 Department of Geology and Geography, West Virginia University, Morgantown, WV 26505-6300 (USA) |
| ABSTRACT |
| To build a rapid and accurate method for greenhouse vegetable land information extraction using an index model derived from TM digital data of Qingzhou City, Shandong Province, based on a systematic analysis of the spectral characteristics of different land use types in the study area, a subset of the image was first made to eliminate the mountainous region not associated with vegetable distribution, and then water body pixels were masked. With this the V1 index model for greenhouse vegetable land extraction was developed. The index model indicated greenhouse vegetable land for Qingzhou in April 2002 was concentrated in the southeast and around rural residential areas. Field data used for an accuracy evaluation showed that greenhouse hectares determined with remote sensing were 95.9% accurate, and accuracy for the spatial distribution of greenhouse vegetable land cross checked with a random sample was 96.3%. Therefore, this approach provided an effective method for greenhouse vegetable land information extraction and has potential significance for management of greenhouse vegetable production in the study area, as well as North China. |
| Key Words: greenhouse vegetable land, information extraction, Qingzhou City, TM image |
| Citation: Zhao, G. X., Li, J., Li, T., Yue, Y. D. and Warner, T. 2004. Utilizing landsat TM imagery to map greenhouses in Qingzhou, Shandong Province, China. Pedosphere. 14(3): 363-369. |
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