| 宋达成,李广宇,樊林,许劲柏,吴昊,赵鹏,韩生慧,张晓娟,王昱淇,王忠文,马全林,靳承东.民勤新能源风电场典型植物土壤碳密度估算及其空间分布特征[J].干旱地区农业研究,2025,(3):233~244 |
| 民勤新能源风电场典型植物土壤碳密度估算及其空间分布特征 |
| Estimation of soil carbon density and spatial distribution characteristics of typical plants at the Minqin new energy wind farm |
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| DOI：10.7606/j.issn.1000-7601.2025.03.24 |
| 中文关键词: 大型风电场 生态影响 生物量 碳密度 空间分布 |
| 英文关键词:arge wind farm ecological impact biomass carbon density spatial distribution |
| 基金项目:甘肃省重点研发计划项目（22YF7FA078）；甘肃省林业和草原科技创新项目（LCCX202303）；基于新能源发电与空气制水技术的防沙治沙科技示范项目；甘肃省重点人才项目（GZTZ20240415）；国家自然科学基金（32160410） |
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| 中文摘要: |
| 为探明大型新能源风电场植被、土壤碳密度分配格局及其影响因素，揭示风电场运行对局地生态系统碳循环过程的驱动机制，针对民勤红砂岗新能源风电场5个不同监测区域（上风部、中心、下风部、边缘及外部对照）共45个样方开展植被、土壤调查及采样，并基于各样品碳含量测定数据，估算风电场运行对不同监测区域典型植物群落生物量积累和土壤碳密度分布的影响。结果表明：风电场运行能够显著改变区域植物群落，从而增加不同监测区域植物碳密度差异，外部对照区域植物碳密度平均值约为1.63 t·hm-2，而风电场内部各区域植物碳密度平均值约为0.69 t·hm-2；风电场运行对土壤有机碳密度的影响不显著，不同监测区域均处于相同水平，土壤平均有机碳密度总体保持在21.45~29.67 t·hm-2；以40 cm土层深度为节点，风电场不同监测区域0~100 cm范围土壤有机碳密度垂直分布总体呈现出浅层土壤（＜40 cm）随土层深度的增加而不断升高、深层土壤（＞40 cm）随土层深度的增加呈先下降后上升的波动性变化特征；植物总生物量是影响研究区植物碳密度和土壤有机碳含量的关键因子。 |
| 英文摘要: |
| To investigate the patterns of vegetation and soil carbon density distribution in large\|scale new energy wind farms and their influencing factors, as well as to uncover the driving mechanisms by which wind farm operations affect the local ecosystem carbon cycle, this study conducted vegetation and soil surveys and sampling across 45 plots within five distinct monitoring areas (upwind, center, downwind, edge, and external control) of the Minqin Hongshagang New Energy Wind Farm. Based on carbon content measurements from the samples, the impact of wind farm operations on biomass accumulation of typical plant communities and soil carbon density distribution in different monitoring areas was estimated. The results showed: (1) Wind farm operations significantly altered the structure of regional plant communities, thereby increasing the variability in plant carbon density across different monitoring areas. The average plant carbon density in the external control area was about 1.63 t·hm-2, while the average within the various internal areas of the wind farm was about 0.69 t·hm-2. (2) The impact of wind farm operations on soil organic carbon density was not significant, with all monitoring areas maintaining similar levels, and the average soil organic carbon density overall remained between 21.45 and 29.67 t·hm-2. (3) Using a soil depth of 40 cm as a node, the vertical distribution of soil organic carbon density in the 0~100 cm range of different monitoring areas generally showed an increase with depth in shallow soils (<40 cm) and a fluctuating decrease followed by an increase in deeper soils (>40 cm). (4) Total plant biomass is a key factor affecting both plant carbon density and soil organic carbon content in the study area. The findings are expected to provide a scientific foundation for the efficient operation of new energy wind farms in arid regions, contribute to addressing global climate change, and support national ecological security decisions. |
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