Temporal changes of soil physic-chemical properties at different soil depths during larch afforestation by multivariate analysis of covariance.
Temporal changes of soil physic-chemical properties at different soil depths during larch afforestation by multivariate analysis of covariance.
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落叶松造林期间不同土层土壤理化性质随时间变化的多元协方差分析
DOI：
10.1002/ece3.947
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发表时间：
2014-04
影响因子：
2.6
通讯作者：
Zu, Yuan-Gang
中科院分区：
文献类型：
--
作者：
Wang, Hui-Mei;Wang, Wen-Jie;Chen, Huanfeng;Zhang, Zhonghua;Mao, Zijun;Zu, Yuan-Gang
关键词：
不同深度的土壤理化性质不同，然而，在不同的土壤深度造林引起的时间变化的差异很少报道。通过检验19个参数，在一个大的时间序列数据集（159个样地，636个剖面，2544个样本）的落叶松人工林的时间变化及其与土壤深度的相互作用进行了检查的多元协方差分析（MANCOVA）。氮、钾、氮磷比、有效态氮、磷、钾及氮碱比、磷碱比、钾碱比等9个参数随时间变化不呈线性，其余10个参数随时间变化呈显著线性。其中四个表现出不同的表层和深层土壤之间的时间变化。表层土壤有机质、C：P、C：K和容重的变化速率分别为262.1 g·kg-1·year-1、438.9 mg·g-1·year-1、5.3 mg·g-1·year-1和-3.23 mg·cm-3·year-1，而深层土壤则相反。这些分歧导致在整个80厘米的土壤剖面缓和或没有变化。其他6个参数在0-80 cm土壤剖面上表现出明显的时间变化（P：-4.10 mg·kg-1·年-1; pH：-0.0061单位·年-1; C：N：167.1 mg·g-1·年-1; K：P：371.5 mg·g-1·年-1; N：K：-0.242 mg·g-1·年-1; EC：cm-1·a-1），但在不同土层间差异不显著（P > 0.05）。研究结果表明，深层土壤在研究土壤理化性质变化中的重要性，在森林经营和土壤养分平衡中应充分考虑表层和深层土壤的时间变化。
Soil physic-chemical properties differ at different depths; however, differences in afforestation-induced temporal changes at different soil depths are seldom reported. By examining 19 parameters, the temporal changes and their interactions with soil depth in a large chronosequence dataset (159 plots; 636 profiles; 2544 samples) of larch plantations were checked by multivariate analysis of covariance (MANCOVA). No linear temporal changes were found in 9 parameters (N, K, N:P, available forms of N, P, K and ratios of N: available N, P: available P and K: available K), while marked linear changes were found in the rest 10 parameters. Four of them showed divergent temporal changes between surface and deep soils. At surface soils, changing rates were 262.1 g·kg−1·year−1 for SOM, 438.9 mg·g−1·year−1 for C:P, 5.3 mg·g−1·year−1 for C:K, and −3.23 mg·cm−3·year−1 for bulk density, while contrary tendencies were found in deeper soils. These divergences resulted in much moderated or no changes in the overall 80-cm soil profile. The other six parameters showed significant temporal changes for overall 0–80-cm soil profile (P: −4.10 mg·kg−1·year−1; pH: −0.0061 unit·year−1; C:N: 167.1 mg·g−1·year−1; K:P: 371.5 mg·g−1 year−1; N:K: −0.242 mg·g−1·year−1; EC: 0.169 μS·cm−1·year−1), but without significant differences at different soil depths (P > 0.05). Our findings highlight the importance of deep soils in studying physic-chemical changes of soil properties, and the temporal changes occurred in both surface and deep soils should be fully considered for forest management and soil nutrient balance.
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影响因子：
4
作者：
Torn, MS;Harte, J
通讯作者：
Harte, J
中国落叶松人工林发展对土壤有机碳、氮、pH和容重的影响
影响因子：
11.6
作者：
Wang Wen-Jie;Qiu Ling;Chen Xi-Quan
通讯作者：
Chen Xi-Quan
影响因子：
64.8
作者：
Fontaine, Sebastien;Barot, Sebastien;Rumpel, Cornelia
通讯作者：
Rumpel, Cornelia
影响因子：
4.8
作者：
COVINGTON, WW
通讯作者：
COVINGTON, WW
影响因子：
4.9
作者：
Rumpel, Cornelia;Koegel-Knabner, Ingrid
通讯作者：
Koegel-Knabner, Ingrid