1.西南林业大学 水土保持学院, 云南 昆明 650224
2.云南省山地农村生态环境演变与污染治理重点实验室, 云南 昆明 650224
高文娇(1999—),女(汉族),山东省临沂市人,硕士研究生,研究方向为石漠化修复治理。Email:1938822516@qq.com。
王妍(1980—),女(满族),河北省承德市人,博士,教授,博士生导师,主要从事脆弱生态系统关键过程与修复、土地利用及景观动态演变等研究。Email:wycaf@126.com。
收稿:2025-02-26,
修回:2025-05-20,
纸质出版:2025-08-20
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高文娇, 王妍, 刘云根, 等.光伏板高度对旱季石漠化地区不同坡度土壤性质的影响[J].水土保持通报,2025,45(4):105-112.
Gao Wenjiao, Wang Yan, Liu Yungen, et al. Effects of photovoltaic panel height on soil physicochemical properties in rocky desertification areas with different slopes during dry season [J]. Bulletin of Soil and Water Conservation,2025,45(4):105-112.
高文娇, 王妍, 刘云根, 等.光伏板高度对旱季石漠化地区不同坡度土壤性质的影响[J].水土保持通报,2025,45(4):105-112. DOI: 10.13961/j.cnki.stbctb.2025.04.036. CSTR: 32312.14.stbctb.2025.04.036..
Gao Wenjiao, Wang Yan, Liu Yungen, et al. Effects of photovoltaic panel height on soil physicochemical properties in rocky desertification areas with different slopes during dry season [J]. Bulletin of Soil and Water Conservation,2025,45(4):105-112. DOI: 10.13961/j.cnki.stbctb.2025.04.036. CSTR: 32312.14.stbctb.2025.04.036..
目的
2
分析光伏板下石漠化地区土壤水分和养分的变化特征及其关键影响因子,评估光伏板高度及地形坡度在旱季对土壤理化性质的影响,旨在为该地区的生态恢复与绿色产业发展提供科学依据和理论支持。
方法
2
选取已建设8 a的云南省石林彝族自治县光伏示范基地为研究区,在干旱期对平坡和陡坡中不同高度的光伏板(高板前檐离地高度为2.4 m,后檐离地高度为3.1 m,低板前檐离地高度为0.5 m,后檐离地高度为1.2 m,夹角为24°)下区域土壤进行取样,通过方差分析、RDA分析,研究不同坡度下土壤水分及养分对光伏板高度的响应。
结果
2
①在旱季石漠化地区,光伏板高度显著影响土壤水分及养分含量(
p
<
0.05)。相较非光伏遮挡区域,光伏板遮荫显著增加土壤体积含水率、饱和持水量、毛管持水量及田间持水量水平,且低光伏板平坡区域土壤水分均高于其他样地。 ②土壤全氮、全磷含量在整个旱季随光伏板高度的增加而显著减少,在低光伏板平坡区域达到最大值,而在干旱末期时,光伏遮挡区域土壤有机碳含量相比对照区域显著降低35%。 ③光伏板的建造主要通过改变土壤容重、孔隙度、pH值及土壤酶活性影响土壤水分及养分含量的变化。
结论
2
石漠化地区旱季低光伏板相比高光伏板更有利于起到减少水分蒸发和固定养分的作用,在平坡地区尤为明显。
Objective
2
Soil moisture characteristics, nutrient changes beneath photovoltaic (PV) panels in rocky desertification areas, and their key influencing factors were analyzed. The effects of PV panel height and terrain slope on soil physicochemical properties during the dry season were evaluated to provide a scientific basis and theoretical support for ecological restoration and green industry development in this region.
Methods
2
A PV demonstration base in Shilin Yi Autonomous County, Yunnan Province, which had been under construction for 8 years, was selected as the study area, and soil samples were taken from beneath PV panels of differing heights (high panel: front eave height 2.4 m, rear eave 3.1 m; low panel: front eave height 0.5 m, rear eave 1.2 m; tilt angle of 24°) on both flat slopes and steep slopes during drought period. The responses of soil moisture and nutrients to PV panel heights in association with different slope gradients were analyzed using analysis of variance (ANOVA) and redundancy analysis (RDA).
Results
2
① In karst rocky desertification areas during the dry season, PV panel height significantly influenced soil moisture and nutrient content (
p
<
0.05). Compared with non-shaded areas, PV panel shading was associated with significantly increased soil volumetric water content, saturated water-holding capacity, capillary water-holding capacity, and field capacity. Notably, soil moisture levels beneath low PV panels on shallow terrain gradients were consistently higher than those at the other sampling sites. ② Soil total nitrogen (TN) and total phosphorus (TP) contents exhibited significant decreases with increasing PV panel height throughout the dry season, and displayed maximum values beneath low PV panels on flat slopes. However, soil organic carbon (SOC) content in shaded areas decreased by 35% compared with control regions by the end of the drought period. ③ Correlation analysis revealed that PV panel installation primarily altered soil bulk density, porosity, pH value, and enzyme activities, thereby driving changes in soil moisture and nutrient characteristics.
Conclusion
2
The construction of low-PV panels in rocky desertification areas during the dry season was more conducive to reducing water evaporation and fixing nutrients compared to high-PV panels, especially in flat slope areas.
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