Spatio-temporal Distribution of Cultivated Land Types and Their Influencing Factors in Laiyang City of Shandong Province Based on Geographical Detectors
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Spatio-temporal Distribution of Cultivated Land Types and Their Influencing Factors in Laiyang City of Shandong Province Based on Geographical Detectors
Bulletin of Soiland Water ConservationVol. 43, Issue 4, Pages: 211-219(2023)
Dai Yuting, Qi Fei, Dong Mingming, et al. Spatio-temporal Distribution of Cultivated Land Types and Their Influencing Factors in Laiyang City of Shandong Province Based on Geographical Detectors[J]. Bulletin of Soiland Water Conservation, 2023, 43(4): 211-219.
DOI:
Dai Yuting, Qi Fei, Dong Mingming, et al. Spatio-temporal Distribution of Cultivated Land Types and Their Influencing Factors in Laiyang City of Shandong Province Based on Geographical Detectors[J]. Bulletin of Soiland Water Conservation, 2023, 43(4): 211-219. DOI: 10.13961/j.cnki.stbctb.2023.04.026.
Spatio-temporal Distribution of Cultivated Land Types and Their Influencing Factors in Laiyang City of Shandong Province Based on Geographical Detectors
①研究区耕地占土地总面积的54.44%,整体呈现南多北少,西多东少的特征;以旱梯田为主,所占比例为61.19%;其次为水浇地、旱平地和旱坡地,撂荒地仅占0.33%。②单因子探测器结果表明,地貌类型、坡度及土壤类型是影响耕地类型分布的主导因素,因子交互作用时,影响因子的解释力q值均达0.3以上。③2019—2021年耕地总体动态度为-0.25%,面积减少4.73 km
[Objective] The temporal and spatial variation characteristics of cultivated land types and their influencing factors were studied in order to provide a theoretical basis for policy-making regarding cultivated land protection
sustainable agricultural development
and soil and water conservation in this region. [Methods] The study was conducted for Laiyang City in Shandong Province. High-resolution remote sensing data from 2019 to 2021 were combined with field observations in order to divide cultivated land types into five categories: irrigated land
arid flat land
arid sloping land
arid terrace land
and abandoned land. We determined the spatio-temporal distribution and variation of different types of cultivated land and their influencing factors
and identified the variable regions by using dynamic change degree
land use transfer matrix
and geographic detector. [Results] ① Cultivated land of Laiyang City accounted for 54.44% of the total land area
with an overall distribution pattern of more cultivated land in the southern and western areas of the city
and less in the northern and eastern areas of the city. Arid terrace land accounted for 61.19% of the total cultivated land area
which was followed by irrigated land
arid flat land
and arid sloping land. Abandoned land accounted for only 0.33% of the total cultivated land area. ② The analysis of single factor detector showed that landform type
slope
and soil type were the three main factors affecting the distribution of cultivated land type
and the (q values) were all above 0.3 when the factors interacted with each other. ③ From 2019 to 2021
the net rate of cultivated land conversion was -0.25%. The total area decreased 4.73 km2
mainly due to conversion of arid terrace land
arid sloping land
arid flat land
and irrigated land to construction land. This conversion mostly occurred in the urban area located in the low hilly area with a slope of less than 5° and a brown soil type. [Conclusion] The mainly cultivated land type is dry terraced field. Cultivated land distributed in low hilly area with gentle slopes (representing cultivated land with good quality) is easy to change. As the area continues to decrease
the protection measures of high-quality cultivated land should be strengthened.
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