相关实验视频

Updated: Jun 22, 2025

Using Generative Art to Convey Past and Future Climate Transitions

Using Generative Art to Convey Past and Future Climate Transitions

Published on: March 31, 2023

对比的现象学对气候变暖的反应,遍及北方的热带地区

Xiaojun Geng^1,2, Yaru Zhang¹, Yongshuo H Fu^1,3

¹College of Water Sciences, Beijing Normal University, Beijing 100875, China.

Fundamental research

|June 27, 2024

概括

春季叶子的发芽时间随着气候变暖而推进,但响应在地理位置上有所不同. 了解这些空间差异对于预测未来的植物现象学及其生态系统影响至关重要.

科学领域:

生态生态学生态生态学
植物现象学植物现象学
气候变化生物学气候变化生物学

背景情况:

气候变暖加快了温带和北极地区的春季叶子的出现.
叶子的时间反应对变暖的空间变化是显著的.
准确的现象学预测对于理解生态系统功能,如碳和水循环,至关重要.

研究的目的:

调查春季叶子发芽时间的度模式及其对北半球温度的敏感性.
分析不同度的叶子发芽时间和温度之间的相关性.
了解冷却和热强迫在解释叶出反应空间变化的作用.

主要方法:

在中国,欧洲和美国 (1980-2016) 的2067个地点对38种木质物种进行了现场现象学观测.
横跨度梯度的量化叶子外感度 (S_T) 和温度相关性 (R_T).
检查了进化冷却和热强迫要求对观察到的模式的影响.

主要成果:

叶子对变暖的敏感性 (S_T) 随着度 (0.15 ± 0.02 d °C^-1 °N^-1) 显著下降.
温度相关性 (R_T) 随着度 (0.02 ± 0.001 °N^{-1) 显著增加.}
在S_T和R_T的度模式与物种特定的冷却和热强迫要求有关,受当地气候可预测性和降水的影响.

结论:

观察到春季叶子对气候变暖的反应中的复杂空间变化.
强调将环境暗示相互作用的空间差异纳入大规模现象学模型的重要性.
改进模型准确度对于预测未来的现象变化及其生态后果至关重要.

关键词:

显而易见的温度敏感性气候变化气候变化气候变化度的模式是度的模式.叶子出来的叶子出来的温带地区的树木.

更多相关视频

Field-Based Thermal Physiology Assay: Cold Shock Recovery under Ambient Conditions

Field-Based Thermal Physiology Assay: Cold Shock Recovery under Ambient Conditions

Published on: March 9, 2021

Resurrection of Dormant Daphnia magna: Protocol and Applications

Resurrection of Dormant Daphnia magna: Protocol and Applications

Published on: January 19, 2018

相关概念视频

Global Climate Change

Global Climate Change

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.

Responses to Heat and Cold Stress

Responses to Heat and Cold Stress

Every organism has an optimum temperature range within which healthy growth and physiological functioning can occur. At the ends of this range, there will be a minimum and maximum temperature that interrupt biological processes.

What is Climate?

What is Climate?

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.

What is Weather?

What is Weather?

Biological Clocks and Seasonal Responses

Biological Clocks and Seasonal Responses

The circadian—or biological—clock is an intrinsic, timekeeping, molecular mechanism that allows plants to coordinate physiological activities over 24-hour cycles called circadian rhythms. Photoperiodism is a collective term for the biological responses of plants to variations in the relative lengths of dark and light periods. The period of light-exposure is called the photoperiod.

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.