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| 采煤沉陷区人工林地土壤肥力质量的空间特征 |
| Spatial Characteristics of Soil Fertility Quality of Artificial Forest Land in Coal Mining Subsidence Area |
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| DOI： |
| 中文关键词: 土壤肥力 空间差异性 人工林地 采煤沉陷区 |
| 英文关键词: Soil fertility Spatial difference Artificial forest land Coal mining subsidence area |
| 基金项目:国家自然科学基金资助项目（42177070）；河南省高校基本科研业务费专项基金资助项目（NSFRF210321）；河南省博士后基金资助项目（001702041）；河南省高等学校重点科研基金资助项目（22A170009） |
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| 中文摘要: |
| 以焦作市韩王矿沉陷区林地土壤为研究对象，测定不同沉陷部位和不同深度土壤中8项肥力指标，基于隶属度函数和灰色关联度分析法，对沉陷区土壤肥力质量进行评价。结果表明：沉陷区林地土壤硝氮、全氮、速效钾、全钾和有机质含量在不同层位之间存在显著性差异（P＜0.05），上层（0 cm～20 cm）硝氮、速效钾和有机质含量显著高于下层（20 cm～40 cm）；土壤肥力质量在空间上呈现出明显的变化特征，坡中处最高，坡底处最低；速效磷是影响沉陷区土壤肥力质量提升的限制性因子。 |
| 英文摘要: |
| Taking the forest land soil in Hanwang Mine subsidence area in Jiaozuo as the research object, eight fertility indexes in different subsidence positions and different depths of soil were determined, the quality of soil fertility was evaluated based on membership function and gray correlation analysis. The results showed that the contents of nitrate nitrogen，nitrite nitrogen, total nitrogen，available potassium, total potassium and organic matter in the soil of the subsidence area were significantly different among different layers(P＜0.05). The contents of nitrate nitrogen，nitrite nitrogen, available potassium and organic matter in the upper layer (0 cm~20 cm) were significantly higher than those in the lower layer (20 cm~40 cm). Soil fertility quality had obvious spatial variation characteristics, with the highest at the middle of the slope and the lowest at the bottom of the slope. Available phosphorus was a limiting factor affecting the improvement of soil fertility quality in the subsidence area. |
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