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| Research of Spatial Pattern of Cultivated Land Quality in Functional Areas of Food Production in Guangdong Province |
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| DOI：10.16768/j.issn.1004-874X.2020.07.020 |
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| Abstract: |
| 【Objective】In order to rationally use land of different cultivated land qualities, improve the protection
and management of cultivated land and promote the adjustment of agricultural industrial structure and sustainable
agricultural development, it is particularly critical to grasp the spatial distribution of cultivated land quality and soil
nutrient status.【Method】Taking the food production functional area in Guangdong Province as research area, and the GIS
technology, combined with statistical analysis method, is used to analyze soil fertility level, soil nutrient status and spatial pattern of cultivated land in the food production functional areas.【Result】The cultivated land fertility of the food production
functional areas in Guangdong Province is mainly classified as third-class, fourth-class and second-class; soil organic matter
is classified as third-class（54.87%）, second-class（24.20%） and fourth-class（17.03%）; soil available phosphorus
is mainly classified as Grade two（39.49%）, Grade one（31.16%） and Grade three（24.49%）; soil available potassium
is mainly classified as Grade four（42.21%）, Grade five（23.47%） and Grade three（14.99%）.【Conclusion】The
area of cultivated land with the first-class fertility is small and distributed unevenly; the cultivated land with the second-class
fertility is widely distributed in mountain areas; the cultivated land with the third and fourth-class fertility is distributed more
evenly in space, covering the entire food production functional areas; the fifth-class lands are mainly distributed in mountain
area, including eastern Guangdong, western Guangdong and Zhaoqing in the Pearl River Delta. Sixth-class lands are mostly
distributed in Zhaoqing, Guangzhou, east wing of Jieyang, mountainous area of Heyuan and other places in the Pearl River
Delta. Soil nutrient levels are mainly Grade three and Grade four,and there are differences between different nutrients |
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