中文摘要：

在森林土壤酸化过程空间信息模型和森林植被生产力空间信息模型的基础上，耦合了森林水土保持、森林涵养水源、森林生长固碳、森林土壤盐基保持4个空间信息子模型，构建了森林生态效益空间信息模型.选取贵州省龙里地区作为试验点，运用遥感和地理信息系统技术获取模型参数，定量模拟了不同酸沉降条件下森林保土、保水、生长固碳、土壤盐基保持4种生态功能，并利用替代价值法对4种生态功能进行了货币化评定.本文主要介绍森林生长固碳、森林土壤盐基保持两个子模型及其生态效益评价.经研究森林生长固碳、土壤盐基保持效益远大于森林的林木价值，约为林木价值的10倍.森林不同生态功能受酸雨的破坏程度不同，若2007年酸雨pH值下降1.0，则在29 km^2的面积上森林生长固碳和土壤盐基保持生态效益损失达165万元，平均每km^2面积上损失为5.7万元.

英文摘要：

A Forest Ecological Evaluation Model including four modules, i.e. Forest Soil Retaining Module, Forest Water Retaining Module, Forest Carbon Sequestration Module and Forest Soil Base Cation Retaining Module, was developed in this study based on the Soil Acidification Model and the Forest Productivity Model. Data of precipitation, soil and vegetation collected at Longli, Guizhou Province were used to evaluate the ecological effects of acid deposition on forests, such as carbon sequestration and soil base cation retention. Some model parameters were derived from satellite images using remote sensing and geographic information system techniques. The ecological functions of the forests under acid deposition were assessed based on the value of substitutes. The results show that the sum of the ecological benefits of forest carbon sequestration and soil base cation retention is about 10 times more than the timber value itself; and if the pH of acid rain is reduced by 1.0, the economic loss of forest over the area of 29 km^2 on forest carbon sequestration and soil base cation retention would be about 165×10^4 yuan RMB, which is equivalent to an average loss of 5.7×10^4 yuan RMB per square kilometer.