相关实验视频

Updated: May 26, 2025

Field Collection and Laboratory Maintenance of Canopy-Forming Giant Kelp to Facilitate Restoration

Field Collection and Laboratory Maintenance of Canopy-Forming Giant Kelp to Facilitate Restoration

Published on: June 7, 2024

探索全球植被生态系统的弹性:非线性,驱动力和管理

Xuan Lv¹, Guo Chen², Qiang Wang³

¹School of Accounting, Chongqing Technology and Business University, Chongqing, 400067, China; School of Remote Sensing and Information Engineering, Wuhan University, Wuhan, 430079, China.

Journal of environmental management

|February 22, 2025

概括

2004年以后,全球植被的弹性下降,特别是在澳大利亚和非洲,这表明了广泛的退化. 二氧化碳度上升对各种生态系统的植被弹性产生了重大影响,需要针对性的气候变化减缓战略.

科学领域:

生态生态学生态生态学
环境科学环境科学
气候变化研究气候变化研究

背景情况:

植物的弹性对生态系统的稳定性和功能至关重要.
全球生态系统面临越来越多的干扰威胁,突出需要了解植被恢复率.
植被恢复的非线性趋势和对环境驱动因素的反应是关键的研究领域.

研究的目的:

用非线性趋势分析量化全球植被弹性并识别制度转变.
确定植被弹性变化背后的驱动力及其贡献.
为了揭示传统的线性分析掩盖的植被退化.

主要方法:

从1982年到2020年,通过跨年内核规范差异植被指数 (kNDVI) 的滞后-1自相关性量化全球植被弹性和制度转变.
采用了部分相关性分析,以确定各种驱动力对植被弹性的贡献率.
利用非线性趋势分析来检测植被弹性中的突然变化和转折点.

主要成果:

全球植被弹性在2004年之后出现了急剧下降 (比率为-3.17 × 10−4,p < 0.05),特别是在澳大利亚,非洲和南美洲.
全球近四分之一的土地经历了持续减少植被弹性,主要集中在热带,温带和干旱地区.
二氧化碳度是植被弹性变化的主要驱动因素 (37.0%42.5%),不同的植被类型对降水,温度和太阳辐射等因素有独特的反应.

结论:

全球植被的弹性已经下降,显著的退化被线性分析所掩盖.
二氧化碳度是影响植被弹性的主要因素,但其影响在不同的生态系统和植被类型上有所不同.
有针对性的战略对于减轻气候变化对植被生态系统的影响至关重要,考虑到各种环境力量的复合效应.

关键词:

突如其来的变化.的二氧化碳 (CO) 度.复合效应是一种复杂的效应.缴纳费率是指缴纳费用的比例.植被的弹性植被的弹性

更多相关视频

JenaTron - An Experimental Approach to Study the Effects of Plant History and Soil History on Grassland Ecosystem Functioning

JenaTron - An Experimental Approach to Study the Effects of Plant History and Soil History on Grassland Ecosystem Functioning

Published on: March 21, 2025

Experimental Protocol for Manipulating Plant-induced Soil Heterogeneity

Experimental Protocol for Manipulating Plant-induced Soil Heterogeneity

Published on: March 13, 2014

相关概念视频

What is an Ecosystem?

What is an Ecosystem?

Ecological Succession

Ecological Succession

Ecological succession is influenced by the processes of facilitation, inhibition, and toleration. Facilitation occurs when early successional species create more favorable ecological conditions for subsequent species, such as enhanced nutrient, water, or light availability. In contrast, inhibition happens when early successional species create unfavorable ecological conditions for potential successive species, such as limiting resource availability. In some cases, later successional species...

Ecological Disturbance

Ecological Disturbance

An ecological disturbance is a temporary disruption in the environment resulting from abiotic, biotic, or anthropogenic factors, causing a pronounced change in an ecosystem. The impact of an ecological disturbance, which can depend on its intensity, frequency, and spatial distribution, plays a significant role in shaping the species diversity within the ecosystem.

Responses to Drought and Flooding

Responses to Drought and Flooding

Water plays a significant role in the life cycle of plants. However, insufficient or excess of water can be detrimental and pose a serious threat to plants.

Threats to Biodiversity

Threats to Biodiversity

There have been five major extinction events throughout geological history, resulting in the elimination of biodiversity, followed by a rebound of species that adapted to the new conditions. In the current geological epoch, the Holocene, there is a sixth extinction event in progress. This mass extinction has been attributed to human activities and is thus provisionally called the Anthropocene. In 2019 the human population reached 7.7 billion people and is projected to comprise 10 billion by...

Adaptations that Reduce Water Loss

Adaptations that Reduce Water Loss

Though evaporation from plant leaves drives transpiration, it also results in loss of water. Because water is critical for photosynthetic reactions and other cellular processes, evolutionary pressures on plants in different environments have driven the acquisition of adaptations that reduce water loss.