This manuscript analyzes and discusses viewpoints concerning the renaturalization of floodplains as an instrument of management in large catchments, using natural flood defense schemes. Schemes consider the differenti...This manuscript analyzes and discusses viewpoints concerning the renaturalization of floodplains as an instrument of management in large catchments, using natural flood defense schemes. Schemes consider the differentiated supply of ecosystemic services based on river channel/floodplain interactions. Conventional structural methods used to prevent flooding (e.g., longitudinal dikes) are increasingly showing themselves to be less efficient with regard to advances in the problems of environmental management of the territory, especially when combined with extreme events, where the importance of perfecting strategies for harmonizing duly controlled floodable areas and water retention can be seen. Natural flood risk reduction measures are part of a holistic solution for sustainable management of flood risk, conservation of nature, water quality and green economy. They rely upon the inherent ability of floodplains to retain water in the basin, and this can delay and reduce peak flows.展开更多
森林模拟优化模型(forest simulation and optimization system,FSOS)已在加拿大不列颠哥伦比亚省和中国长白山区得到广泛应用.FSOS模型基于多种资源协调平衡管理观点,采用金属模拟退火优化算法安排森林经营作业方案,在实现森林经营多...森林模拟优化模型(forest simulation and optimization system,FSOS)已在加拿大不列颠哥伦比亚省和中国长白山区得到广泛应用.FSOS模型基于多种资源协调平衡管理观点,采用金属模拟退火优化算法安排森林经营作业方案,在实现森林经营多目标长期可持续协调发展的基础上达到森林资源的理想状态.FSOS模型中的多功能(或多目标)包括水的储存和净化、二氧化碳的截获、野生动物生境保护、生物多样性维持、可视景观质量与木材生产等,其目标的参照系"森林理想状态"由专家、环境组织和政府政策根据生态系统的多功能进行综合界定.本文详细介绍了FSOS基本参数和理想状态的界定,及金属模拟退火优化算法在森林生态系统规划中的应用,为实现森林生态系统多种资源的规划管理以及政府定量分析和管理森林生态系统的多种资源并有效监督森林作业和多种资源变化、实现森林资源可持续利用提供帮助.展开更多
文摘This manuscript analyzes and discusses viewpoints concerning the renaturalization of floodplains as an instrument of management in large catchments, using natural flood defense schemes. Schemes consider the differentiated supply of ecosystemic services based on river channel/floodplain interactions. Conventional structural methods used to prevent flooding (e.g., longitudinal dikes) are increasingly showing themselves to be less efficient with regard to advances in the problems of environmental management of the territory, especially when combined with extreme events, where the importance of perfecting strategies for harmonizing duly controlled floodable areas and water retention can be seen. Natural flood risk reduction measures are part of a holistic solution for sustainable management of flood risk, conservation of nature, water quality and green economy. They rely upon the inherent ability of floodplains to retain water in the basin, and this can delay and reduce peak flows.
文摘森林模拟优化模型(forest simulation and optimization system,FSOS)已在加拿大不列颠哥伦比亚省和中国长白山区得到广泛应用.FSOS模型基于多种资源协调平衡管理观点,采用金属模拟退火优化算法安排森林经营作业方案,在实现森林经营多目标长期可持续协调发展的基础上达到森林资源的理想状态.FSOS模型中的多功能(或多目标)包括水的储存和净化、二氧化碳的截获、野生动物生境保护、生物多样性维持、可视景观质量与木材生产等,其目标的参照系"森林理想状态"由专家、环境组织和政府政策根据生态系统的多功能进行综合界定.本文详细介绍了FSOS基本参数和理想状态的界定,及金属模拟退火优化算法在森林生态系统规划中的应用,为实现森林生态系统多种资源的规划管理以及政府定量分析和管理森林生态系统的多种资源并有效监督森林作业和多种资源变化、实现森林资源可持续利用提供帮助.
