Enrichment and Ecological Risk Assessment of Available Phosphorus in Paddy Soil of Fujian Province Over Past 40 years

被引：1
|
作者：
Chen Z.-X. [1 ,2 ]
Qiu L.-X. [1 ,2 ]
Chen H.-Y. [1 ,2 ]
Fan X.-Y. [1 ,2 ]
Wu T. [1 ,2 ]
Shen J.-Q. [3 ]
Xing S.-H. [1 ,2 ]
Zhang L.-M. [1 ,2 ]
机构：
[1] College of Resource and Environment, Fujian Agriculture and Forestry University, Fuzhou
[2] University Key Laboratory of Soil Ecosystem Health and Regulation in Fujian, Fuzhou
[3] Fujian Crop Land Construction and Soil and Fertilizer Station, Fuzhou
来源：
Huanjing Kexue/Environmental Science | 2022年 / 43卷 / 07期
关键词：
1:50 000 soil database; Available phosphorus; Ecological risk; Phosphorus enrichment; Spatiotemporal variability;
D O I：
10.13227/j.hjkx.202108140
中图分类号：
学科分类号：
摘要：
The ecological risks such as water eutrophication caused by soil phosphorus loss have attracted extensive attention, and its dynamic changes and enrichment effects are the basis for formulating reasonable control measures. In this study, based on the paddy soils of 1.8×106 hm2 in Fujian province, the dynamic changes and ecological risks of available phosphorus in paddy soils over the past 40 years were analyzedusing a soil database of 1:50 000. The soil database contained 1 471, 215 534, and 2 895 paddy soil samples in different periods, respectively. The paddy soil samples were derived from the 1982 Second National Soil Census, the 2008 Ministry of Agriculture and Rural Areas Soil Testing and Formulated Fertilization Project and the 2018 Ministry of Agriculture, and the Rural Areas Arable Land Quality Monitoring Project, respectively. The results showed that from 1982 to 2018, the content of available phosphorus in paddy soils increased by 47 mg•kg-1, and the enriched area reached 1.65×106 hm2, accounting for 91% of the total paddy soils in Fujian province. From 1982 to 2008, the available phosphorus content of paddy soils in Fujian province increased by 28 mg•kg-1, with the enriched area reaching 1.47×106 hm2, accounting for 82% of the total paddy soils in Fujian province. From 2008 to 2018, the available phosphorus content of paddy soils in Fujian province increased by 19 mg•kg-1, with the enriched area reaching 1.22×106 hm2, accounting for 69% of the total paddy soils in Fujian province. Further ecological risk assessment showed that from 2008 to 2018, the area of paddy soil with ecological phosphorus enrichment risk in the province gradually increased, mainly distributed in percogenic paddy soils and hydromorphic paddy soils with a slope of less than 2°. In the future, effective phosphorus fertilizer management measures should be formulated for different types of paddy soil to prevent the occurrence of environmental problems such as water eutrophication. © 2022, Science Press. All right reserved.
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页码：3741 / 3751
页数：10
相关论文
共 47 条
  • [41] Liu Z J, Ai C, Xu X P, Et al., Research strategy of reclamation and management for low-yield rice paddy soils, Journal of Plant Nutrition and Fertilizers, 21, 2, pp. 509-516, (2015)
  • [42] Zhang N M, Yu Y, Hong B, Et al., Factors influencing phosphorus loss by runoff process from farmlands in the Dianchi watershed, Environmental Science, 24, 3, pp. 155-157, (2003)
  • [43] Huang D F, Wang G, Chen C., Research of agricultural non-point source pollution issue and prevention and cure countermeasures in Fujian Province, Chinese Agricultural Science Bulletin, 22, 11, pp. 371-377, (2006)
  • [44] (2017)
  • [45] Chen Q L., The spatial-temporal distribution of the nitrogen and phosphorus in the nearshore area of Fujian Province, Journal of Fisheries Research, 41, 2, pp. 130-139, (2019)
  • [46] Deng H, Gao M, Long Y, Et al., Characteristics of soil nitrogen and phosphorus losses under different land-use schemes in the Shipanqiu watershed, Environmental Science, 42, 1, pp. 251-262, (2021)
  • [47] Kang Z M, Zhang R X, Ye Y Z, Et al., GIS-based pollution risk assessment of nitrogen and phosphorus loss in surface runoff in farmlands in Fujian Province, Chinese Journal of Eco-Agriculture, 26, 12, pp. 1887-1897, (2018)
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