了解印度不同生态系统下使用模型和卫星数据的碳封存趋势
Smrati Gupta1, Pramit Kumar Deb Burman2, Yogesh K Tiwari2
1Indian Institute of Tropical Meteorology, Ministry of Earth Sciences, Pune, India; Institute of Environment and Sustainable Development, Banaras Hindu University, Varanasi, India.
The Science of the total environment
|August 18, 2023
概括
这项研究分析了印度四个多样化的生物圈地区的碳封存变化. 结果显示,总初级生产率 (GPP) 的增长趋势越来越明显,西加特山脉和西喜马拉雅山脉的增长率最高.
科学领域:
- 生态科学 生态科学
- 气候变化研究 气候变化研究
- 遥感 遥感 遥感 遥感
背景情况:
- 碳捕获对气候调节至关重要,植被发挥着关键作用.
- 了解碳捕获的区域变化对于有效的气候变化缓解战略至关重要.
- 印度多样化的生态系统为分析植被对气候变化的反应提供了一个独特的案例研究.
研究的目的:
- 调查印度四个不同的生物圈地区碳捕集的变化.
- 分析气候参数,植被指数和初级生产率 (GPP) 之间的关系.
- 评估气候条件变化对植被健康和二十年碳吸收的影响.
主要方法:
- 使用了FLUXCOM GPP数据 (2001-2019) 和卫星衍生的植被指数 (NDVI,EVI,LAI).
- 分析了气象数据,包括表面温度,降雨量,土壤水和蒸汽压力缺陷 (VPD).
- 采用统计分析来确定气候变量与选定地区的植被生产率之间的趋势和相关性.
主要成果:
- 叶面积指数 (LAI) 在不同季节与GPP的相关性比EVI和NDVI更强.
- 在所有研究地区,毛初级生产率 (GPP) 呈现出积极趋势,表明碳吸收增加.
- 西加特山脉 (WG) 和西喜马拉雅地区 (WHNI) 显示了相当高的GDP增长率 (分别为6.44和5.36 gCm-2y-1).
结论:
- 研究的印度生物圈地区的植被显示出对不断变化的气候条件的积极反应,随着碳封存的增加.
- 植物和气候的区域差异对初级生产率 (GPP) 的规模有很大影响.
- 长期监测植被指数和GPP对于了解气候变化影响和为保护工作提供信息至关重要.
相关概念视频
The Carbon Cycle
38.4K
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.
38.4K
Global Climate Change
24.5K
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.
24.5K
Carbon-dioxide Fixation
37
Carbon dioxide fixation in prokaryotes enables the assimilation of inorganic carbon into organic molecules, supporting biosynthetic pathways, sustaining ecosystems, and contributing to the global carbon cycle. It also has industrial applications in carbon capture and bioproduct synthesis. Autotrophic organisms rely on this process to utilize CO₂ as a carbon source in diverse environments.The Calvin CycleThe Calvin cycle is the most widespread carbon fixation mechanism, primarily used by...
37
What is Climate?
18.6K
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.
18.6K
The Calvin Benson Cycle
4.6K
Ribulose 1,5- bisphosphate carboxylase/oxygenase (RuBisCo) is a critical enzyme that catalyzes carbon dioxide assimilation during photosynthesis. However, it is an inefficient enzyme, having an extremely slow catalytic rate. A typical enzyme can process about a thousand molecules per second; however, RuBisCo fixes only around three-carbon dioxides per second. Photosynthetic cells compensate for this slow rate by synthesizing very high amounts of RuBisCo, making it the most abundant single...
4.6K
Bioremediation
18.9K
Bioremediation is the use of prokaryotes, fungi, or plants to remove pollutants from the environment. This process has been used to remove harmful toxins in groundwater as a byproduct of agricultural run-off and also to clean up oil spills.
18.9K


