黄土高原不同气候区刺槐林恢复年限对水、碳及植物多样性的影响
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陕西省青年科技新星项目(2019KJXX-069);陕西省杰出青年科学基金项目(2021JC-19)


Effects of returning years of Robinia pseudoacacia forest on water, carbon and plant diversity in different climatic regions of the Loess Plateau
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    摘要:

    分析植被恢复对黄土高原人工林生态系统服务的影响,对黄土高原新一轮植被恢复和可持续发展有重要意义。通过文献搜索对已发表的92篇文献中的241组对照试验结果运用整合分析方法,以黄土高原不同气候区内不同恢复年限的刺槐林为代表,选取土壤水分、碳和植物多样性三个指标评价黄土高原刺槐林的生态系统服务变化。结果表明:与对照相比,种植刺槐林后整体上显著提高了土壤碳储量和植物多样性,相对增长率分别为81.30%和32.60%(P<0.05),而土壤储水量显著下降,相对变化率为-35.58%(P<0.05);半湿润地区土壤储水量相对变化率(-22.98%)(P<0.05)和植物多样性相对增长率(149.1%)(P<0.05)显著高于半干旱地区,土壤碳储量相对增长率(57.21%)(P<0.05)低于半干旱地区;刺槐林土壤储水量、碳储量和植物多样性的相对变化率随恢复年限增加依次为-27.57%、-41.80%、35.92%,16.84%、78.58%、156.27%和51.38%、26.37%、27.56%。

    Abstract:

    It is of great significance for a new round of vegetation restoration and sustainable development on the Loess Plateau (LP) to analyze the impact of vegetation restoration on artificial forest ecosystem. Through literature search, 241 groups of control test results in 92 published literatures were used to evaluate the changes of ecosystem services of different restoration years of Robinia pseudoacacia (RP) in different climatic regions of the LP by meta-analysis. Three indexes of soil moisture, carbon, and plant diversity were selected. The results showed that compared with the control, the soil carbon storage and plant diversity were significantly increased after planting RP, and the relative growth rates were 81.30% and 32.60%, respectively (P<0.05), while the soil water storage decreased significantly, and the relative change rate was -35.58% (P<0.05). The relative change rate of soil water storage (-22.98%) (P<0.05) and the relative growth rate of plant diversity (149.1%) (P<0.05) in semi-humid area were significantly higher than those in semi-arid area, and the relative growth rate of soil carbon storage (57.21%) (P<0.05) was lower than that in semi-arid area. The relative change rates of soil water storage, carbon storage, and plant diversity were -27.57%, -41.80%, 35.92%, 16.84%, 78.58%, 156.27% and 51.38%, 26.37%, 27.56%, respectively.

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王稳,高晓东,赵西宁,杨孟豪.黄土高原不同气候区刺槐林恢复年限对水、碳及植物多样性的影响.生态学报,2023,43(23):9770~9783

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