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    Ecological restoration zoning of cultivated land in Tacheng City based on soil quality and landscape pattern
    LEI Hai-feng, WANG Xi-yuan, GAO Hai-feng
    HUBEI AGRICULTURAL SCIENCES    2024, 63 (2): 148-155.   DOI: 10.14088/j.cnki.issn0439-8114.2024.02.024
    Abstract63)      PDF (7639KB)(29)       Save
    Taking Tacheng City, Xinjiang as the research object, an evaluation index system was constructed from the perspective of soil quality and landscape pattern to evaluate the soil quality and landscape pattern of cultivated land. The results showed that the soil quality of cultivated land in Tacheng City was divided into four levels. Grade I cultivated land accounted for 9.95%, Grade II cultivated land accounted for 27.99%, Grade III cultivated land accounted for 37.04%, and Grade IV cultivated land accounted for 25.02%. Grade I cultivated land could be used as a selection object for high standard cultivated land construction, while Grade IV cultivated land was not suitable for development and required soil remediation;the landscape pattern of cultivated land in Tacheng City was divided into four levels. Grade I cultivated land accounted for 34.6%, Grade II cultivated land accounted for 40.1%, Grade III cultivated land accounted for 21.6%, and Grade IV cultivated land accounted for 3.7%; based on the soil quality and landscape pattern, the ecological restoration areas of cultivated land in Tacheng City were divided into 6 categories: 218 km2 of high-quality protection area, 279 km2 of soil quality improvement area, 196 km2 of soil quality restoration area, 192 km2 of landscape pattern improvement area, 58 km2 of landscape pattern restoration area, and 70 km2 of farmland restoration area. Overall, the key direction for ecological restoration of cultivated land in Tacheng City was soil quality improvement and restoration.
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    The soil erosion evaluation based on RUSLE Model: A case study of Liuhe District, Nanjing City
    LYU Han, XU Li-ping, CHEN Qi-jun
    HUBEI AGRICULTURAL SCIENCES    2024, 63 (2): 156-161,239.   DOI: 10.14088/j.cnki.issn0439-8114.2024.02.025
    Abstract52)      PDF (3123KB)(25)       Save
    Taking Chengqiao Street, Liuhe District, Nanjing City, Jiangsu Province, as the research area, the evaluation process of soil erosion intensity in the research area was studied by combining theoretical algorithm, model building and field application according to the relevant standards of the Ministry of Water Resources. The existing DEM generation method and land use classification method were optimized to some extent, and the monitoring elements of soil erosion were extracted by using multi-source remote sensing impact data, and the soil erosion intensity in the study area was estimated based on the RUSLE model. The results of practical application in the field were compared and analyzed with the existing methods to verify the validity and objectivity of the theories and algorithms.
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