Authors

Abstract

This study aims to systematically evaluate the effects of eight distinct photovoltaic mounting systems at the National Photovoltaic Energy Storage Demonstration Platform on the growth performance of Suaeda glauca and soil properties in saline–alkali land. The results showed that the dual-axis tracking support system between panels (SJ) significantly outperformed the other treatments (P<0.05), achieving the highest plant height (36.20 cm), stem diameter (1.84 mm), and leaf width (2.11 mm), as well as higher dry matter accumulation and fresh biomass. In addition, this system exhibited the highest total potassium content (44.36 mg/kg) and the highest D-value (1.30) based on comprehensive membership function evaluation. The application of the dual-axis tracking support system enhances the yield of Suaeda glauca and promotes soil organic matter recovery, thereby achieving the dual objectives of improving photovoltaic system productivity and supporting ecological restoration of halophytic vegetation.

Abstract in Chinese

本研究旨在系统评估国家光伏储能实证实验平台8种不同光伏支架模式对盐碱地先锋植物碱蓬（Suaeda glauca）群落生长性能及土壤特性的影响。采用随机区组设计，测定光伏阵列板间、板下、非光伏区场内、场外对照组碱蓬植株高度、盖度等形态指标，并采集 0–20 cm 土层样本测定 pH、电导率、养分等含量。结果表明，双轴跟踪支架板间（SJ）在植株高度（36.20 cm）、茎粗（1.84 mm）和叶宽（2.11 mm）上显著优于其他处理（P<0.05），干重、鲜重亦居高位；双轴跟踪支架全钾最高（44.36 mg/kg）。双轴跟踪支架综合隶属函数评价 D 值最高（1.30），表明双轴跟踪支架对草地生态系统正向影响最显著。在盐碱草地开展光伏 农业协同利用时，优先选用双轴跟踪支架模式，可提升碱蓬产量并促进土壤有机质恢复，实现光伏系统与盐生植被的协同增产与生态修复双重目标。