生物质和碳储量模型,其中包括单个Quercus mongolica树的气候因素及其分配模式
Jun Lu1, Lingbo Dong2, Hao Zhang3
1Institute of Forest Resource Information Techniques, Chinese Academy of Forestry, Beijing, 100091, P. R. China.
Carbon balance and management
|February 8, 2026
概括
准确预测森林碳储存对于缓解气候变化至关重要. 这项研究开发了准确的生物质和碳储存模型,用于中国东北部的蒙古,并结合了气候因素以提高精度.
科学领域:
- 林业和生态 林业和生态
- 生物质估计生物质估计
- 碳封存建模的模型
背景情况:
- 温室效应的恶化需要准确的森林碳储存预测.
- 森林是关键的碳汇,在缓解气候变化方面发挥着至关重要的作用.
- 了解生物质分配模式是精确评估森林碳库存的关键.
研究的目的:
- 为了分析Quercus mongolica的生物质分配模式.
- 开发准确且兼容的模型来估计地面和地下生物质和碳储存.
- 评估气候因素对生物质和碳储存模型准确性的影响.
主要方法:
- 收集了中国东北部175棵Quercus mongolica树的数据,包括生物质,DBH,身高,年龄和气候因素.
- 开发了使用非线性同时方程的增量兼容和代数控制的聚合模型.
- 将气候因素纳入兼容性模型,并利用根茎比率进行地下生物质估计.
主要成果:
- 在地面上的生物质和碳储存模型实现了高精度 (调整R2adj:0.70480.9618) 低误差 (TRE ≤ ±1%,MPE < 10%).
- 地下生物质模型显示了良好的准确性 (调整R2adj:0.77020.7801),TRE ≤1%和MPE <15%.
- 整合气候因素显著提高了组件模型的准确性,特别是叶子和树枝.
结论:
- 开发的模型准确地预测了中国东北部Quercus mongolica的生物质和碳储存.
- 气候因素对于提高生物质和碳储存模型的预测能力至关重要.
- 该方法为在其他树种中进行类似建模提供了理论基础.
更多相关视频
相关概念视频
Global Climate Change
29.0K
Throughout its ~4.5 billion year history, the Earth has experienced periods of warming and cooling. However, the current drastic increase in global temperatures is well outside of the Earth’s cyclic norms, and evidence for human-caused global climate change is compelling. Paleoclimatology, the study of ancient climate conditions, provides ample evidence for human-caused global climate change by comparing recent conditions with those in the past.
29.0K
The Carbon Cycle
44.0K
Carbon is the basis of all organic matter on Earth, and is recycled through the ecosystem in two primary processes: one in which carbon is exchanged among living organisms, and one in which carbon is cycled over long periods of time through fossilized organic remains, weathering of rocks, and volcanic activity. Human activities, including increased agricultural practices and the burning of fossil fuels, has greatly affected the balance of the natural carbon cycle.
44.0K
What is Climate?
20.9K
Climate refers to the prevailing weather conditions in a specific area over an extended period. As the saying goes, “Climate is what you expect. Weather is what you get.” Climate is influenced by geographic factors, such as latitude, terrain, and proximity to bodies of water.
20.9K
The Tree of Life - Bacteria, Archaea, Eukaryotes
39.0K
The “tree of life” describes the evolution of life and the evolutionary relationships between organisms. The root of the tree is the common ancestor to all life on Earth. All other species radiate from this point, much like the branches of a tree. The numerous tips of these branches on the tree of life represent every living, or extant, species. Extinct species, which are species that no longer exist, can be found towards the center of the tree. Currently, these organisms, both...
39.0K
Survival Tree
433
Survival trees are a non-parametric method used in survival analysis to model the relationship between a set of covariates and the time until an event of interest occurs, often referred to as the "time-to-event" or "survival time." This method is particularly useful when dealing with censored data, where the event has not occurred for some individuals by the end of the study period, or when the exact time of the event is unknown.
Building a Survival Tree
Constructing a...
Building a Survival Tree
Constructing a...
433
Phylogenetic Trees
49.8K
Phylogenetic trees come in many forms. It matters in which sequence the organisms are arranged from the bottom to the top of the tree, but the branches can rotate at their nodes without altering the information. The lines connecting individual nodes can be straight, angled, or even curved.
49.8K


