特别选题
杨胜天,李巍,吕涛,杜迪,刘瑞禄.酸雨对森林植被的影响及在贵州龙里的初步研究——代“酸雨胁迫影响森林植被及其生态效益的评估”专栏序言[J].环境科学学报,2010,30(1):1-6
酸雨对森林植被的影响及在贵州龙里的初步研究——代“酸雨胁迫影响森林植被及其生态效益的评估”专栏序言
- Pilot study of the impact of acid rain on forests in Longli,Guizhou Province——Preface to assessments of the ecological benefit of forests under acid rain stress
- 基金项目：国家重点基础研究发展计划(973)项目(No.2005CB422207);国家自然科学基金项目(No.40671123)
- 作者
- 单位
- 杨胜天
- 北京师范大学地理学与遥感科学学院, 遥感科学国家重点实验室, 环境遥感与数字城市北京市重点实验室, 北京 100875
- 李巍
- 北京师范大学环境学院, 北京 100875
- 吕涛
- 贵州省水利厅, 贵阳 550002
- 杜迪
- 贵州省水利厅, 贵阳 550002
- 刘瑞禄
- 贵州省水利厅, 贵阳 550002
- 摘要：酸雨胁迫条件下森林生态效益评估是亟待解决的环境问题之一.酸雨对森林生态系统的危害可分为直接危害和间接危害.在贵州省龙里建立生态水文实验站,自2005年起开展酸雨监测,对森林植被冠层遭受酸雨直接伤害及其对酸雨的缓冲作用进行模拟实验和分析,结果表明研究区酸雨的直接危害有限;为此,依据生态水文过程理论,利用遥感和地理信息系统技术,建立了土壤酸化、土壤酸化-植被生产力和森林生态效益评价3个空间信息模型;模拟计算了研究区酸沉降对土壤化学性质、植被生产力和森林固碳、保肥方面的生态效益的影响,构建了酸雨对森林植被的间接危害评价方法体系.
- Abstract：Ecological benefit assessment of forests under the stress of acid rain is an unresolved environmental problem. The damage of acid rain to forest ecosystems has been classified into direct damage and indirect damage. An eco-hydrological research station was established in Longli in Guizhou Province and acid rain has been monitored there since 2005. Also,simulation experiments were conducted to analyze the direct damage to the forest vegetation canopy by acid rain and the buffering of canopy to acid rain. Results show that the direct damage of acid rain is limited in the study area. Therefore,an assessment system was constructed to estimate the indirect damage of acid rain to the forest community,based on the theory of ecological and hydrological processes. In the system,three spatial information modules were formed using remote sensing and GIStechnology: Soil Acidification Module,Soil Acidification Plant Productivity Module and Forest Ecological Evaluation Module. The impacts of acid deposition on soil chemistry,vegetation productivity and forest ecological values were simulated for the study area.
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