| 引用本文: | 曲乐扬,吴立鹏,管孝艳,等.黄河三角洲不同土地利用方式土壤盐碱特征及质地组成差异[J].灌溉排水学报,2026,45(8):86-94. |
| Qu Leyang,Wu Lipeng,Guan Xiaoyan,et al.黄河三角洲不同土地利用方式土壤盐碱特征及质地组成差异[J].灌溉排水学报,2026,45(8):86-94. |
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| 摘要: |
| 【目的】研究不同土地利用方式及空间差异对土壤盐碱特征的影响。【方法】以黄河三角洲（东营市）黄河以北区域为研究对象，布设27个采样点，测定土壤电导率、pH值、交换性阳离子以及土壤质地，探究黄河三角洲区域不同土地利用方式以及距海不同距离土壤盐碱特征。【结果】越靠近海边土壤电导率越高，而土壤pH值则受土地利用方式的影响空间差异较大。离海越近交换性钾离子量、交换性镁离子量越高，而交换性钠离子与交换性钙离子空间异质性较强。耕地土壤电导率介于0.21~12.47 mS/cm，低于荒地的0.32~17.26 mS/cm；而pH值介于7.43~9.35，高于荒地7.55~8.71。土壤质地以粉粒（45.16%~84.68%）为主，其次分别为砂粒（7.17%~48.94%）和黏粒（2.59%~10.54%），且受土地利用方式较大。土壤质地中黏粒量与粉粒量的变化趋势相同，均为从内陆到沿海递减的趋势，但是砂粒表现为从内陆到沿海递增的趋势。【结论】黄河三角洲区域内土壤盐分受距海与距黄河远近影响显著，同时土地利用方式也是影响盐碱特征的重要因素。距离海边越近交换性钾离子量与镁离子量越高，交换性钠离子与交换性钙离子受土地利用方式影响显著。土壤质地组成差异性显著，黏粒量和粉粒量从内陆到沿海递减，而砂粒量则递增。 |
| 关键词: 土地利用方式；盐碱特征；质地组成；黄河三角洲 |
| DOI：10.13522/j.cnki.ggps.2025400 |
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| Impacts of land use and its distance to coastline on soil salinity and alkalinity in the Yellow River Delta |
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Qu Leyang, Wu Lipeng, Guan Xiaoyan, Xu Zhenghe, Meng Zhanbo, Cong Xin, Liu Peicheng, Hao Aixin
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1. School of Water Conservancy and Environment, Jinan University, Jinan 250022, China;
2. Department of Irrigation and Drainage, China Institute of Water Resources and Hydropower Research, Beijing 100048, China;
3. Dongying City Hekou Water Conservancy Bureau, Dongying 257000, China
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| Abstract: |
| 【Background and Objective】Soil salinity and alkalization are the main abiotic factors constraining agricultural production in the Yellow River Delta. Understanding its characteristics and the underlying mechanisms is essential for rational exploitation of this soil resource. This paper investigates the spatial distribution of soil salinization and alkalization and the impact of land use on it in this region.【Method】The study area was located in the north of the Yellow River Delta, in which 27 sampling points were established. For soil samples taken from each sampling point, we measured their electrical conductivity, pH, exchangeable cations and soil particle composition.【Result】Soil electrical conductivity increased with decreasing distance from the coastline, while soil pH showed strong spatial variability driven by land usage. The contents of exchangeable potassium and magnesium increased toward the coastline, and exchangeable sodium and calcium showed strong spatial heterogeneity. The electrical conductivity of cultivated land varied from 0.21 to 12.47 mS/cm, lower than that of wasteland (0.32 to 17.26 mS/cm). Soil pH in cultivated land varied from 7.43 to 9.35, higher than that in the wasteland (7.55 to 8.71). Silt accounted for 45.16% to 84.68% of soil composition in the area, followed by sand (7.17% to 48.94%) and clay (2.59% to 10.54%). Land use had a great impact on soil texture. Both clay and silt contents decreased from the inland toward the coastline, while sand content increased in the opposite direction.【Conclusion】Soil salinity in the Yellow River Delta is significantly influenced by location relative to the coastline and the Yellow River. Land use also affects soil salinization. Exchangeable K+ and Mg2+ contents increased toward the coastline, whereas Na+ and Ca2+ are largely controlled by land use. Soil texture showed strong spatial variation, with clay and silt contents decreasing from the inland to the coastline, while the sand content increased in the opposite direction. |
| Key words: land use patterns; salinization and alkalization characteristics; soil texture composition; Yellow River Delta |
