| 微生境改良对太行山干瘠山地沙地柏生长的影响 |
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| 引用本文： | 王玥,裴顺祥,辛学兵,郭慧,吴莎,吴迪.微生境改良对太行山干瘠山地沙地柏生长的影响[J].林业科学研究,2020,33(3):156-163. |
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| 作者姓名： | 王玥 裴顺祥 辛学兵 郭慧 吴莎 吴迪 |
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| 作者单位： | 中国林业科学研究院华北林业实验中心,北京102300 |
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| 基金项目： | “十二五”农村领域国家科技支撑项目 |
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| 摘 要： | 目的]探究太行山干瘠山地植被恢复技术。方法]采用人工模拟土层厚度15 cm条件下,以耐瘠薄植物沙地柏为研究对象,结合不同微生境改良技术,研究不同微生境改良措施下沙地柏生长、叶绿素含量、露点水势及生物量分配情况。结果]株高增长量中,石块覆盖(ST)、塑料地膜覆盖(DM)、液态地膜覆盖(YM)、菌根处理(JG)、枯落物覆盖(KL)均显著高于对照(CK),且分别比CK高385.75%、403.03%、1330.00%、1490.00%、1533.00%;冠幅增长量中,ST、DM、JG、KL处理均显著高于CK处理,且分别比CK处理高185.03%、160.36%、239.80%、161.67%;7月ST处理主根长度显著高于JG,10月DM、KL处理显著高于JG;不同微生境改良处理对沙地柏叶片叶绿素含量产生影响,且ST、YM、JG和DM、KL分别在2016年7月和2017年6月显著高于CK;相对于CK处理,除4月外,不同月份微生境改良会增加沙地柏叶片露点水势,且各处理间大部分不显著,仅7月份ST处理显著低于DM、JG、KL;不同处理对沙地柏地上、地下生物量积累产生的影响不同,且JG处理影响最显著;不同处理对沙地柏生物量分配的影响随时间变化,其中,10月ST处理下的地上/地下干质量比显著高于YM、KL,且CK显著高于KL,第二年6月KL显著高于CK、DM,其他月份各处理间无显著性差异。结论]微生境改良技术可以在不同程度上显著提高太行山干瘠山地沙地柏株高、冠幅、叶片叶绿素含量、叶片露点水势、地上和地下生物量积累;通过对比不同微生境改良技术,发现菌根处理明显优于其他微生境改良技术;建议在太行山土壤厚度为15 cm的干瘠山地开展以沙地柏为植物材料的植被恢复时,应结合菌根处理微生境改良技术,可有效提高植被恢复的成效。
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| 关 键 词： | 太行山干瘠山地 微生境改良 沙地柏 生长 |
Effects of Microhabitat Improvement on the Growth of Sabina vulgaris in the Arid and Barren Mountainous Area of Taihang Mountains |
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| WANG Yue,PEI Shun-xiang,XIN Xue-bing,GUO Hui,WU Sha,WU Di.Effects of Microhabitat Improvement on the Growth of Sabina vulgaris in the Arid and Barren Mountainous Area of Taihang Mountains[J].Forest Research,2020,33(3):156-163. |
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| Authors: | WANG Yue PEI Shun-xiang XIN Xue-bing GUO Hui WU Sha WU Di |
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| Affiliation: | (Experimental Centre of Forestry in North China,Chinese Academy of Forestry,Beijing 102300,China) |
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| Abstract: | Objective]To explore the vegetation restoration technology in the arid mountainous area of Taihang Mountains.Method]On the plot with artificially simulated soil layer of 15 cm in thickness,the growth,chlorophyll content,dew point water potential and biomass allocation of Sabina vulgaris,a barren tolerant plant,were studied in combination with different microhabitat improvement measures,i.e.stone mulching(ST),plastic film mulching(DM),liquid film mulching(YM),mycorrhizal fungi treatment(JG),litterfall mulching(KL)and the control(CK).Result]The increment of tree height were 385.75%,403.03%,1330.00%,1490.00%,and 1533.00%higher than the CK under ST,DM,YM,JG,and KL respectively.The increment of crown growth under ST,DM,JG,and KL were 185.03%,160.36%,239.80%,and 161.67%higher than the CK.The length of main root under ST treated in July was longer than JG,and under DM and KL in October was longer than JG.Different microhabitat improvement treatments affected the chlorophyll content in S.vulgaris leaves,and the effect of DM,KL,YM,and ST treated in June and July were significantly higher than the CK.Compared with the CK,microhabitat improvement measures would increase the dew point water potential of S.vulgaris leaves all the year round except April,and no significant difference was found in effects among various treatments.But it was observed that the effect of ST treated in July was significantly lower than DM,JG,and KL.Various treatments differed in the effect on the accumulation of aboveground and underground biomass of S.vulgaris,among which the JG had the most significant impact.The effects of various treatments on the biomass distribution of S.vulgaris varied with time.Among them,the dry weight ratio of aboveground and underground biomass under ST in October was significantly higher than under YM and KL,and the CK was significantly higher than KL.In June of next year,the dry weight ratio of aboveground and underground biomass under KL was significantly higher than CK and DM,while no significant difference was found among treatments in other months.Conclusion]Microhabitat improvement measures can significantly increase the height,canopy width,leaf chlorophyll content,leaf dew point water potential,and aboveground and underground biomass of S.vulgaris in the dry and barren mountainous area of the Taihang Mountains.By comparing various microhabitat improvement measures,it is found that the effect of mycorrhizal fungi treatment is significantly better than the others.It is suggested the mycorrhizal fungi treatment should be adopted when carrying out vegetation restoration using S.vulgaris in arid mountains with a soil thickness of 15 cm in the Taihang Mountains. |
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| Keywords: | drought and barren land in Taihang Mountains microhabitat improvement Sabina vulgaris growth |
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