碳储存对土地使用变化和多种情景预测的反应在中国Zunyi
Yi Liu1,2, Xuemeng Mei1,2, Li Yue1,2
1College of Forestry, Guizhou University, Guiyang, 550025, Guizhou, China.
Scientific reports
|January 2, 2025
概括
祖尼的土地利用变化从2000年到2020年影响了碳储存 (CS),林地和农田转化为建筑用地造成损失. 预计生态农田保护方案将尽量减少未来的CS下降.
科学领域:
- 环境科学 环境科学
- 生态生态学 生态生态学
- 遥感 遥感 遥感 遥感
背景情况:
- 土地利用变化对生态系统服务,特别是碳储存 (CS) 产生重大影响.
- 了解这些影响对于优化空间规划和协调土地利用与生态系统服务提供至关重要.
- 祖尼的景观主要由林地和农田占据主导地位,正在进行的转换影响CS.
研究的目的:
- 从2000年到2020年分析Zunyi CS的变化和驱动因素.
- 预测不同发展场景下未来的CS变化.
- 为了确定最佳的发展情景,为CS保存.
主要方法:
- 对土地使用变化动态的分析,重点关注林地,农田,草原,建筑用地和水之间的转换.
- 基于2000年,2010年和2020年的土地使用数据,量化碳储存 (CS).
- 评估驱动因素,包括正常化差异植被指数 (NDVI),人类足迹指数和人口密度.
- 根据各种未来发展场景,包括生态农田保护场景 (ECS),对CS的时空空间预测.
主要成果:
- 祖尼的CS在2000年 (658.77 × 10^6t) 和2020年 (658.35 × 10^6t) 之间显示了较小的波动,在2010年 (661.44 × 10^6t) 达到峰值.
- 林地,农田和草原转换为建筑用地和水是 CS 损失的主要驱动因素.
- NDVI是影响CS模式的主要因素 (q>10%),人类足迹和人口密度的影响越来越大.
- 未来的预测表明,到2030年,CS将出现下降趋势.
结论:
- 有效控制林地和农田的土地使用,可以缓解碳储存的下降趋势.
- 生态农田保护方案 (ECS) 预计到2030年将导致最小的CS减少 (-0.26%),估计CS为656.67 × 10^6t.
- 优先保护关键土地类型的综合土地利用规划对于保持碳储存和生态系统服务至关重要.
相关概念视频
The Carbon Cycle
36.5K
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.
36.5K
Global Climate Change
23.9K
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.
23.9K
Adaptations that Reduce Water Loss
25.0K
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.
25.0K
Responses to Drought and Flooding
10.5K
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.
10.5K
Responses to Heat and Cold Stress
13.2K
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.
13.2K
What is Climate?
18.0K
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.
18.0K


