被压抑者的统治：热带森林中的幂律大小结构。
Dominance of the suppressed: Power-law size structure in tropical forests.
机构信息
National Institute for Mathematical and Biological Synthesis, Knoxville, TN 37996, USA. Department of Integrative Biology, University of Texas at Austin, Austin, TX 78712, USA.
School of Forest Resources and Conservation, University of Florida, Gainesville, FL 32611, USA. Smithsonian Tropical Research Institute, Apartado 0843-03092, Balboa, Ancon, Republic of Panama.
出版信息
Science. 2016 Jan 8;351(6269):155-7. doi: 10.1126/science.aad0592.
Tropical tree size distributions are remarkably consistent despite differences in the environments that support them. With data analysis and theory, we found a simple and biologically intuitive hypothesis to explain this property, which is the foundation of forest dynamics modeling and carbon storage estimates. After a disturbance, new individuals in the forest gap grow quickly in full sun until they begin to overtop one another. The two-dimensional space-filling of the growing crowns of the tallest individuals relegates a group of losing, slow-growing individuals to the understory. Those left in the understory follow a power-law size distribution, the scaling of which depends on only the crown area-to-diameter allometry exponent: a well-conserved value across tropical forests.
尽管支持热带树木生长的环境存在差异，但树木的大小分布却惊人地一致。通过数据分析和理论研究，我们发现了一个简单而直观的生物学假设，可以解释这一特性，这也是森林动态建模和碳储量估计的基础。在干扰之后，森林空隙中新的个体在阳光直射下迅速生长，直到它们开始相互遮挡。最高个体的树冠不断生长，填满了二维空间，将一群生长缓慢的失败者排挤到林下。留在林下的个体遵循幂律大小分布，其标度仅取决于冠层面积与直径的比例指数：这是 across across across across across across across across across across across across across across across across across across across across across across across across across across across across across across across across across across across across across across across across across across across across across across across across across across across across across across across across across across across across across across across across across across across across across across across across across across across across across across across across across across across across across across across across across across across across across across across across across across across across across across across across across across across across across across across across across across across across across across across across across across across across across across across across across across across across across across across across across across across across across across across across across across across across across across across across across across across across across across across across across across across across across across across across across across across across across across across across across across across across across across across across across across across across across across across across across across across across across across across across across across across across across across across across across across across across across across across across across across across across across across across across across across across across across across across across across across across across across across across across across across across across across across across across across across across across across across across across across across across across across across across across across across across across across across across across across across across across across across across across across across across across across across across across across across across across across across across across across across across across across across across across across across across across across across across across across across across across across across across across across across across across across across across across across across across across across across across across across across across across across across across across across across across across across across across across across across across across across across across across across across across across across across across across across across across across across across across across across across across across across across across across across across across across across
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