Effect of competition on spatial patterns of oak forests on the Chinese Loess Plateau
Effect of competition on spatial patterns of oak forests on the Chinese Loess Plateau
复制标题
竞争对黄土高原栎林空间格局的影响
DOI：
10.1007/s40333-016-0024-9
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发表时间：
2017-02
影响因子：
3
通讯作者：
YANG Gaihe
中科院分区：
文献类型：
--
作者：
HAO Fei;GUO Shujuan;HAN Xinhui;YANG Gaihe
退耕还林或天然林更新是黄土高原退化土地治理水土流失的一项重要措施。然而，我们对森林更新的时间动态和空间格局的理解仍然不足。对两个不同发育阶段的栎林进行了调查，以确定不同演替阶段的竞争（种内和种间）的空间格局。采用Kriging插值方法和单、双变量O形环统计量，在多尺度下分析了不同胸径的种内和种间空间关系。分析结果表明，在栎林发育的早期，由于栎林和松树重种子的聚集分布，栎林和松树之间的自相关性和竞争强度相对较高。桦树有一个较低的竞争相比，橡树，虽然桦树是优势物种。因此，橡树的不对称竞争是最有可能导致他们的边缘扩散，并成功地取代先锋物种。不对称竞争是指较大的个体获得了不成比例的大部分资源，并抑制了较小个体的增长。克立格插值分析表明，在栎林演替过程中，种间竞争造成的同质化趋势。研究结果表明，竞争是栎林空间分布的驱动因素。
Reforestation or natural forest regeneration is an alternative measure for controlling soil erosion in degraded land on the Chinese Loess Plateau (CLP). However, our understanding of the temporal dynamics and the spatial patterns of forest regeneration remains inadequate. Two oak forests at different development stages were investigated to determine the spatial patterns of competitions (intraspecies and interspecies) during different successional stages. The intraspecies and interspecies spatial relationships among different tree diameters at breast height were analyzed at multiple scales by Kriging interpolation method and univariate and bivariate O-ring statistics. Our analytical results indicated that self-correlation and competition intensity were relatively high between oak and pine trees in the early development stage of oak forests due to their clumped distributions of heavy seeds. Birch trees had a lower competition in comparison to oak trees although birch was the dominant species. Therefore, asymmetric competition of oak trees was most likely to have led to their edge dispersal and their success in replacing the pioneer species. Asymmetric competition means that larger individuals obtained a disproportionately large share of the resources and suppressed the growth of smaller individuals. Kriging interpolation analysis showed a tendency towards homogenization caused by interspecies competition during the succession of oak forests. Our results demonstrated that the competition was the driving factor in the spatial distribution of oak forests on the CLP.
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影响因子：
--
作者：
Xiuhai Zhao
通讯作者：
Xiuhai Zhao
影响因子：
--
作者：
Li Yu;S. Ming
通讯作者：
Li Yu;S. Ming
影响因子：
3.7
作者：
Simón Sandoval;J. Cancino
通讯作者：
Simón Sandoval;J. Cancino
DOI：
--
发表时间：
2009
期刊：
Pratacultural Science
影响因子：
--
作者：
Ma ZongTai;Li Fengxia;Li Fu;Xiao Jianshe
通讯作者：
Ma ZongTai;Li Fengxia;Li Fu;Xiao Jianshe
DOI：
--
发表时间：
2009
期刊：
Pratacultural Science
影响因子：
--
作者：
Huang Bin
通讯作者：
Huang Bin