Drivers of changes in soil properties during post-fire succession on Dahurian larch forest
Drivers of changes in soil properties during post-fire succession on Dahurian larch forest
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达胡里落叶松林火后演替过程中土壤性质变化的驱动因素
DOI：
10.1007/s11368-021-03031-9
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发表时间：
2021-07
影响因子：
3.6
通讯作者：
Han Dongdong
中科院分区：
文献类型：
--
作者：
Weng Yuetai;Li Zhaoguo;Luo Sisheng;Su Zhangwen;Di Xueying;Yang Guang;Yu Hongzhou;Han Dongdong
目的：在景观尺度上，土壤的性质在生态系统恢复中起着关键作用，并受生物和非生物因素之间复杂的相互作用调节。我们的研究旨在确定西伯利亚东南部落叶松森林中矿质土壤火灾后变化的潜在驱动因素。方法在大兴安岭的一个小区域内建立了80个地点的28年火灾时间序列。在每个站点，我们测量了地形因子、树木变量和地表矿物土壤的十个物理和化学属性。通过层次聚类分析、基于距离的冗余分析、变异划分分析、随机森林分析和结构方程建模，揭示了土壤特性耦合和解耦模式的驱动因素。结果表明，火灾发生时间是土壤性质预测模型中不可完全抛弃的生态预测因子。野火改变了地形和乔木对土壤性质的影响。与未燃烧区相比，燃烧区土壤性质与解释变量的相关性更大。海拔高度对土壤肥力具有重要的正向影响，坡位、坡度和坡向对土壤肥力的正向影响大于负向影响，且坡位和坡度对土壤肥力的正向影响大于坡向影响。林火对平均乔木的重要性排序影响不显著，但与土壤的关系发生了明显变化。结论在北方落叶松林中，山火增强了地形对土壤性质的影响，降低了乔木对土壤性质的影响。虽然在火灾发生后的几十年里，乔木对土壤性质的影响不如地形那么重要，但随着时间的推移，乔木的重要性逐渐增加。因此，野火可能导致地形和乔木对北方落叶松森林土壤性质的重要性和相对重要性的持续变化。
PurposeSoil properties play key roles in ecosystem recovery at the landscape scale and are regulated by a complex interplay between abiotic and biotic factors. Our study aimed to identify the potential drivers of post-fire changes in mineral soil in the larch forest of southeastern Siberia.MethodsWe established a 28-year fire chronosequence with 80 sites over a small region of the Greater Khingan Range. At each site, we measured topographic factors, arboreal variables, and ten physical and chemical attributes of surface mineral soils. We used the hierarchical clustering analysis, distance-based redundancy analysis, variation partitioning analysis, Random Forest analysis, and structural equation modeling to disentangle the drivers for the coupled and decoupled patterns in soil properties.ResultsThe results showed that time since fire is an ecological predictor that cannot be completely discarded for the soil property prediction model. Wildfires altered the effects of topography and arbors on soil properties. Compared with the unburned area, the soil properties of the burned area were associated more with explanatory variables. Here, altitude was a powerful topographic factor that positively correlated with soil properties, whereas slope position, gradient, and aspect had more negative and less positive effects on soil fertility and exhibited similar patterns, of which slope position and gradient exerted stronger influences than aspect. The importance ranking of average tree size was not significantly changed by fires though its relationship with the soil was obviously changed.ConclusionsIn boreal larch forest, wildfires enhance the impact of topography on soil properties while decreasing the impact of arbors on soil properties. Although the arbors are not as critical as topography to the change of soil properties in a few decades after fire, the importance of arbors tends to gradually increase over many years. Consequently, wildfires can cause an on-going shift in the importance and the relative importance of topography and arbors on soil properties in boreal larch forest.
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林龄和地形对中国北方森林火灾后林下恢复的强烈影响
影响因子：
3.7
作者：
Liu Bo;Biswas Shekhar R.;Yang Jian;Lite Zhihua;He Hong S.;Liang Yu;Lau Matthew K.;Fang Yunting;Han Shijie
通讯作者：
Han Shijie
影响因子：
1.4
作者：
M. Jenkins;J. Runyon;C. Fettig;Wesley G. Page;B. Bentz
通讯作者：
M. Jenkins;J. Runyon;C. Fettig;Wesley G. Page;B. Bentz
影响因子：
1.4
作者：
Maryam Khalili-Rad;F. Nourbakhsh;A. Jalalian;M. K. Eghbal
通讯作者：
Maryam Khalili-Rad;F. Nourbakhsh;A. Jalalian;M. K. Eghbal
影响因子：
6.2
作者：
Sarah Schmeer;S. Kampf;L. Macdonald;Joshua Hewitt;C. Wilson
通讯作者：
Sarah Schmeer;S. Kampf;L. Macdonald;Joshua Hewitt;C. Wilson
DOI：
10.1016/j.scitotenv.2018.11.161
发表时间：
2019-03
期刊：
The Science of the total environment
影响因子：
--
作者：
M. Lucas‐Borja;J. González‐Romero;P. Plaza‐Álvarez;Javier Sagra;M. Gómez;D. Moya;A. Cerdà;J. de las Heras
通讯作者：
M. Lucas‐Borja;J. González‐Romero;P. Plaza‐Álvarez;Javier Sagra;M. Gómez;D. Moya;A. Cerdà;J. de las Heras