相关实验视频
Updated: May 23, 2025

12:44
Watershed Planning within a Quantitative Scenario Analysis Framework
Published on: July 24, 2016
7.9K
基于土地覆盖变化分析的水环境建设和城市景观生态风险的演变
Xujie Gong1, Liangming Chen2, Shun Tan3
1Forestry Institute, Central South University of Forestry and Technology, Changsha, Hunan Province 410004, China
概括
强化采矿重塑了贾旺区的土地使用,增加了建筑和水域,同时减少了耕地和采矿土地. 生态风险最初上升,然后下降,风险的空间聚合在20年内增加.
科学领域:
- 环境科学 环境科学
- 城市规划 城市规划
- 生态生态学 生态生态学
背景情况:
- 矿产开采对社会经济进步至关重要,但也带来了重大的生态风险.
- 密集采矿业务可以大幅改变土地利用/土地覆盖 (LULC),影响城市景观和环境.
- 基于资源的城市在平衡经济发展与生态保护方面面临着独特的挑战.
研究的目的:
- 分析了从2000年到2020年在嘉旺区的土地使用/土地覆盖 (LULC) 变化.
- 根据LULC变化,使用生态风险评估原则评估区域景观生态风险.
- 为基于资源的城市提供可持续的土地资源分配和城市生态风险管理的见解.
主要方法:
- 在20年 (2000-2020年) 期间对土地利用/土地覆盖面 (LULC) 的变化进行分析.
- 应用生态风险评估框架来评估景观生态风险.
- 空间统计分析,包括全球Moran's I,以评估生态风险的空间模式.
主要成果:
- 观察到的LULC显著变化:建筑和水面积增加;耕地,工业和采矿土地减少.
- 将工业和采矿土地转化为水体被确定为一个关键的生态补偿区域.
- 平均生态风险最初增加,然后下降,风险最低的面积比率显著下降,从31.60%降至4.00%.
- 全球莫兰的I值表明,生态风险的空间自相关性和聚合性逐渐增加.
结论:
- 贾旺区经历了由采矿活动和随后的土地管理推动的大量LULC转移.
- 生态风险动态表现出复杂的模式,随着时间的推移,风险的空间聚类越来越多.
- 这些发现为其他以资源为基础的城市提供了有价值的数据,以优化土地资源管理和减轻生态风险.
相关概念视频
Design Example: Analyzing Capacity Contours for Flood Risk Assessment
35
Flood risk assessment involves careful planning and analysis to ensure the safety of communities near water retention structures. Capacity contours are a vital tool in this process, as they illustrate the potential spread of water at specific levels in a given area. In the context of building a bund across a small valley, these contours play a critical role in evaluating the safety of nearby residential areas.In this example, the bund is intended to store stormwater in the valley. The engineers...
35
The Water Cycle
24.0K
The Earth’s hydrosphere includes all of the areas where the storage and movement of water occurs. Since water is the basis of all living processes, the cycling of water is extremely important to ecosystem dynamics.
24.0K
Threats to Biodiversity
22.0K
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...
22.0K
What is Evolutionary History?
36.1K
Scientists record evolutionary history by analyzing fossil, morphological, and genetic data. The fossil record documents the history of life on Earth and provides evidence for evolution. However, both fossil and living organisms offer evidence that outlines Earth’s evolutionary history.
36.1K
Responses to Drought and Flooding
10.6K
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.
10.6K
Applications of GIS: Disaster Management and Emergency Response
31
Geographic Information System (GIS) technology is essential for risk identification, action prioritization, and resource optimization in critical situations like flooding and earthquakes. By integrating spatial and demographic data, GIS provides a comprehensive framework for emergency response.GIS integrates data layers, like rainfall intensity, topography, elevation profiles, and river levels, to model high-risk flood zones. These layers assess areas susceptible to flooding based on their...
31

