伊犁黄土含砂量对边坡生态修复植物生长的影响

袁胜洋; 杨贵侠; 李思环; 楚建勋; 杨小玲; 马杰; 刘先峰

doi:10.11988/ckyyb.20240174

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长江科学院院报 ›› 2025, Vol. 42 ›› Issue (5) : 104-110. DOI: 10.11988/ckyyb.20240174

水土保持与生态修复

伊犁黄土含砂量对边坡生态修复植物生长的影响

袁胜洋 ¹^,² ,
杨贵侠 ¹^,² ,
李思环 ¹^,² ,
楚建勋 ³ ,
杨小玲 ¹^,² ,
马杰 ¹^,² ,
刘先峰 ¹^,²

作者信息 +

Influence of Sand Content in Yili Loess on the Growth of Ecological Restoration Plants

YUAN Sheng-yang ¹^,² ,
YANG Gui-xia ¹^,² ,
LI Si-huan ¹^,² ,
CHU Jian-xun ³ ,
YANG Xiao-ling ¹^,² ,
MA Jie ¹^,² ,
LIU Xian-feng ¹^,²

Author information +

文章历史 +

摘要

为探究不同含砂量对边坡生态修复植物生长的影响,基于层次分析法筛选植物,针对伊犁黄土开展加砂种植试验,结合植物覆盖度、土壤累计蒸发量、最大裂缝率的变化规律展开研究。结果表明:加砂能缩短发芽时间、提高发芽率。生长初期水分足时,发芽率、覆盖度等与含砂量正相关,干旱时覆盖度随含砂量增大而减小。土壤水分累计蒸发量与含砂量正相关,且受温度影响明显,温度升高,不同含砂量试样的累计蒸发量差距增大,温度降低,差距增量减小。以40%含砂量为界,<40%时,含砂量与最大裂缝率正相关,最大覆盖度随最大裂缝率增大而增大;>40%时,二者负相关,最大覆盖度随最大裂缝率增大而减小。野外或缺养护时,20%含砂量最佳;有人为养护时,60%含砂量最佳;平地且有人为养护时,全砂最佳。研究成果可为西北交通线路边坡植物种植提供参考。

Abstract

To investigate the effect of sand content on the growth of slope ecological restoration plants, we used the Analytic Hierarchy Process to select suitable plant species and then conducted planting experiment with sand added in Yili loess slopes. By analyzing changes in plant coverage, cumulative soil evaporation, and maximum crack rate, we found that adding sand to the planting soil can speed up plant germination and improve the soil germination rate. During early growth stage with sufficient water supply, the germination rate and plant coverage are positively correlated with sand content. Nevertheless, under drought conditions, plant coverage decreases as sand content rises. The cumulative evaporation of soil moisture is positively correlated with sand content and varies significantly with temperature fluctuations. Higher temperatures lead to larger differences in cumulative evaporation among samples with different sand contents, but these differences gradually narrow as the temperature drops. Taking 40% sand content as the threshold for optimal conditions: when sand content is below 40%, it is positively correlated with the maximum crack rate, and an increase in the maximum crack rate corresponds to an increase in the peak plant coverage of each sample. However, when sand content exceeds 40%, sand content and the maximum crack rate display a negative correlation. As maximum crack rate increases, the peak plant coverage of sample decreases. For wild or poorly maintained ecological restoration sites, an optimal sand content of 20% is recommended. For artificially maintained ecological restoration sites, a 60% sand content is optimal. In flat, human-intervened ecological restoration and maintenance sites, full sand coverage is the best choice.

导出引用

袁胜洋, 杨贵侠, 李思环, 等. 伊犁黄土含砂量对边坡生态修复植物生长的影响[J]. 长江科学院院报. 2025, 42(5): 104-110 https://doi.org/10.11988/ckyyb.20240174

YUAN Sheng-yang, YANG Gui-xia, LI Si-huan, et al. Influence of Sand Content in Yili Loess on the Growth of Ecological Restoration Plants[J]. Journal of Changjiang River Scientific Research Institute. 2025, 42(5): 104-110 https://doi.org/10.11988/ckyyb.20240174

中图分类号： U416.1

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