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| Spatio-temporal evolution of cultivated landquality in Zhuhai during 1982-2009 |
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| DOI：10.16768/j.issn.1004-874X.2017.02.014 |
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| Abstract: |
| This paper selected 12 indicators to establish the evaluation index system from four aspects of soil
fertility，soil conditions，infrastructure and economic output，determined the index weight by entropy evaluation
method，did the spatial interpolation and statistics using ArcGIS software，and analyzed the spatio-temporal
evolution of cultivated land quality of Zhuhai from 1982 to 2009. The results showed that the cultivated land of Zhuhai
concentrated in the first class in 1982 and the second class in 2009，the area of the first class of cultivated land
changing to the second class of cultivated land was 18 005.37 hm2 from 1982 to 2009，which accounted for 60.73% of
the total area of the second class of cultivated land in 2009，and in Baijiao，Qianwu and Pingsha town，there were a
lot of first class of cultivated land changing to the second class of cultivated land. In 1982，the proportions of the first
class and the second class of cultivated land were 65.96% and 30.43%. But in 2009，the proportions were 8.25% and
80.85%，the quality of cultivated land changed drastically. From 1982 to 2009，the structure of land use in Zhuhai
changed greatly，the total area reduced substantially and the level of cultivated land quality dropped quickly. The
quality cultivated land was mainly located in Doumen district，and less in Jinwan district and the least in Xiangzhou
district. |
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