"2000年から2009年まで,干ばつによる地球上の純原産物の減少"に関するコメント
Arindam Samanta1, Marcos H Costa, Edson L Nunes
1Department of Geography and Environment, Boston University, Boston, MA 02215, USA. arindam.sam@gmail.com
まとめ
地球上の陸上の純一次生産 (NPP) は,2000年から2009年にかけて,著しく減少しなかった. 衛星データは,ほとんどの植生地帯で安定した植生活動を示しており,以前のモデルベースの発見に異議を唱えています.
科学分野:
- エコロジー エコロジー エコロジー
- リモートセンシング (リモートセンサー)
- 気候科学 気候科学
背景:
- 以前の研究では,2000年から2009年の間に,世界の陸上純原産 (NPP) の減少が報告されていた.
- この研究では,衛星から得られた植生活動データを用いて,調査結果を再評価しています.
関連する概念動画
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.
Microbes and Climate Change
Microorganisms are pivotal agents in Earth's biogeochemical cycles, significantly influencing climate dynamics through their metabolic activities. These microbes modulate the levels of key greenhouse gases by both contributing to and helping mitigate climate change.Microbial Contributions to Greenhouse Gas EmissionsRising global temperatures accelerate microbial metabolism, which, in turn, speeds up the decomposition of organic matter. This process releases carbon dioxide (CO₂) through...
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.
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.
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.
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...

