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The roles of a decision support system in applying forest ecosystem management in Northeast China

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Science China(Technological sciences) 2006年第z1期49卷 9-18页

作者： DAI Limin, ZHENG Bofu, Guofan Shao & ZHOU Li state key lab of systems ecology, research center for eco-environmental sciences,{2., beijing 100085, China Institute of Applied ecology,{2., Shenyang 110016, China Department of Forestry and Natural Resources, Purdue University, West Lafayette, IN 47907, USA Graduate University of{2., beijing 100101, China 1. state key lab of systems ecology Research Center for Eco-Environmental Sciences Chinese Academy of Sciences Beijing 100085 China2. Institute of Applied Ecology Chinese Academy of Sciences Shenyang 110016 China3. Department of Forestry and Natural Resources Purdue University West Lafayette IN 47907 USA4. Graduate University of Chinese Academy of Sciences Beijing 100101 China

Forest ecosystems provide a variety of services and forest ecosystem management (FEM) is an effective approach to maximize the services. Because of the complexity of forest ecosystems, the applications of FEM can be facilitated with decision support systems (DSS) that recognize and incorporate ecological and socio-economic variables. With the rapid development of computation and information technologies, DSS have been advanced in many ways. Traditional forest management within a forestry unit in China is planned on a yearly basis. The planning itself remains primarily a verbal concept as there are no quantitative decision-support tools available to translate the concept into forest management actions. For the purposes of FEM at the management level, a forest management DFF, FORESTAR, has been developed under a framework of geographic information system (GIS) and forest models. The paper explained the intelligent modeling mechanisms and demonstrated how the applications of FEM can be strengthened with the applications of FORESTAR.

关键词： forest functions, forested landscapes, forest services, forest models, geographic information systems.

Designing regional pattern for ecosystem restoration:A case study

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Science China(Technological sciences) 2006年第z1期49卷 86-97页

作者： LI Guoqiang , MA Keming, FU Bojie & LIU Shiling state key lab of systems ecology, research center for eco-environmental sciences,{2., beijing 100085, China Department of Water Environment, China Institute of Water Resources and Hydropower research, beijing 100038, China School of environmental sciences, beijing Normal University, beijing 100875, China 1. state key lab of systems ecology Research Center for Eco-environmental Sciences Chinese Academy of Sciences Beijing 100085 China 2. Department of Water Environment China Institute of Water Resources and Hydropower Research Beijing 100038 China 3. School of environmental sciences Beijing Normal University Beijing 100875 China

Designing regional pattern is challenging for ecosystem restoration both in theory and in practice. The present study proposed a new approach to design regional pattern for ecosystem restoration with a case in the arid valley of Upper Minjiang River, SW China. The procedures are: (1) Determine the regional pattern of main {2. factors based on the relationships between the important {2. factors and the main geographical factors generated from DEM data. (2. Overlay the maps of the main {2. factors. (3) Generate a lookup table according to the species selection rule we proposed to link the candidate restoration species to the main {2. factors.(4) Determine the regional pattern of ecosystem restoration by positioning the restoration species in the map of {2. factors according to the lookup table. The regional restoration pattern designed in this way would be applicable not only to restoring a region, but also to predicting the future landscape change.

关键词： environmental factors, GIS, restoration species, Upper Minjiang River Valley.

Towards Sustainable Urban environmental Management in Jiangyin city, East China

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chinese Journal of Population,Resources and Environment 2004年第3期2卷 50-56页

作者： Hu Dan, Wang Rusong & Yuan Shaojun Department of the key lab of {2. ecology,{2., chinese academy of sciences, beijing 100085, China Department of the key lab of {2. ecology Research Center for Eco-environmental Sciences Chinese Academy of Sciences Beijing 100085 China

Dramatic economic and social changes have taken place in Jiangyin city due to rapid and uneven urbanization and industrialization. The environmental degradation has followed driven by these changes since the 1980's. With the pressures and effects of environmental deterioration, the city has implemented environmental management to hold back the trends of negative environmental changes. From the viewpoint of systems, DPSER is a good model for urban environmental changes to understand the causes, pressure, state, effect, existing responses and future action strategies. We took Jiangyin city, a developed city in South Jiangsu province, East China, as an example, and analyzed the characteristics of environmental changes and urban responses using DPSER model. Some operational strategies have been put forward to direct the city environmental management towards a sustainable road step by step.

关键词： DPSER analysis model Jiangyin city in East China Sustainable environmental management Urbanization

Estimation of forest volumes by integrating Landsat TM imagery and forest inventory data

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Science China(Technological sciences) 2006年第z1期49卷 54-62页

作者： GU Huiyan, DAI Limin, WU Gang, XU Dong, WANG Shunzhong &WANG Hui Institute of Applied ecology, chinese academy of sciences, Shenyang 110016, China School of Forestry, Northeast Forestry University, Harbin 150040, China {2., research center for eco-environmental sciences, chinese academy of sciences, beijing 100085, China Graduate University of chinese academy of sciences, beijing 100039, China 1. Institute of Applied ecology Chinese Academy of Sciences Shenyang 110016 China 2. School of Forestry Northeast Forestry University Harbin 150040 China 3. state key lab of systems ecology Research Center for Eco-Environmental Sciences Chinese Academy of Sciences Beijing 100085 China 4. Graduate University of chinese academy of sciences Beijing 100039 China

Accurate information about forest volumes is essential for forest management planning. The survey interval of the Forest Resource Inventory of China (FRIC) is too long to meet the demand for timely decision-making required for forest protection, management, and utilization. Analysis of satellite imagery provides good potential for more frequent reporting of forest parameters. In this study, we describe an application of the k-nearest neighbors (kNN) method to Landsat TM imagery for improving estimation of forest volumes. Several spectral features were tested and compared in forest volume estimations, including normalized difference vegetation index, environmental vegetation index, and the combination of the spectral features. The combined index resulted in the most accurate volume estimations. The kNN estimator and the combined index were then used in forest volume estimation. The estimation error (RMSE) of the total volume was44.2., much lower than those for Larix forest (the RMSE was 51.7%) and those for the Korean pine and broadleaved forests (the estimation errors were over 71.7% and 88.19%,respectively). This preliminary study demonstrates the potential of forest volume estimations with remote sensing data to provide useful information for forest management if only limited ground information is available.

关键词： forest inventory, landsat TM, k-nearest neighbors, spectral extraction.

Temporal and Spatial Patterns of Throughfall under Eucommia ulmoides Forest

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Temporal and Spatial Patterns of Throughfall under Eucommia ...

research on the SCS-CN initial abstraction ratio using rainfall-runoff event analysis in the Three Gorges Area,China

第三世界生态高峰会

作者： CAO Yun OUYANG Zhiyun ZHENG Hua HUANG Zhigang WANG Xiaoke MIAO Hong state key {2.oratory of systems {2..research center for eco-environmental sciences,chinese academy of sciences,beijing 100085.China

As an important hydrological process in rainfall redistribution, throughfall is responsible for the transfer of rainfall from a tree canopy to the soil and clearly influences the soil and water conservation in forest *** of spatial distribution of throughfall are of significance of *** under Eucommia ulmoides forest was measured from July 2.04 to September 2.05 at the ecological Benefit Monitoring Station of the Yangtze River Protection Forest,which is located in Cili County,Hunan Province(2.°30′N, 110°10′E).Results show that:The correlation between throughfall and rainfall was *** the whole measurement period,the volume of throughfall accounted for 71.6% of gross *** maximal volume of throughfall occurred in July 2.04 and the minimal throughfall relative to rainfall occurred in November *** spatial variation in throughfall was observed below the canopy of Eucommia ulmoides ***,throughfall among different sampling sites differed significantly(P2.st and 2.nd differed significantly(P2..8% of total rainfall cases In addition,the canopy characteristics had influence on the spatial distribution of *** was a significantly negative correlation between canopy height,coverage and throughfall ***,there was a significantly positive correlation between distances from the sampling site to the nearest tree trunk,trunk angle inclination and throughfall percentage.

关键词： Throughfall Rainfall redistribution Spatial variability Temporalpattern Eucommia ulmoides forest

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Research on the SCS-CN initial abstraction ratio using rainf...

第五届中国青年生态学工作者学术研讨会

作者： Zhi-Hua Shi~(1,2. Li-Ding Chen~2.1 key lab of Subtropical Agriculture & Environment of Ministry of Agriculture,Huazhong Agricultural University,Wuhan 430070,PR China 2.{2. key laboratory of Urban and Regional ecology,{2. center for eco-environmental sciences,chinese {12. of sciences,P.O.Box 2.71,beijing 100085,PR China

The Soil Conservation Service Curve Number (SCS-CN) method is widely used for predicting direct runoff from *** ratio of initial abstraction(Ⅰa) to maximum potential retention (S) was assumed in its original development to be equal to 0.2.in SCS-CN *** constant initial abstraction ratio is the most ambiguous assumption and requires considerable *** objectives of this study were (1) to determine the initial abstraction ratio,in an experimental watershed in the Three Gorges Area of China,by analyzing measured rainfall-runoff events;(2. to compare the performance of the traditional and modifiedⅠa/S values with observed rainfall-runoff *** dataset consisted of 6 years of rainfall and runoff measurements from the experimental *** results indicated that theⅠa/S values,using event rainfall-runoff data, varied from 0.010 to 0.154,with a median of *** average initial abstraction ratio of the watershed was equal to 0.053,The standard SCS-CN method underestimates large runoff events, yielded a slope of the regression line of 0.559 and an intercept of *** modifiedⅠa/S value was about 0.05 that better predicted runoff depths with an R of 0.804 and a linear regression slope of *** also improved model efficiency coefficient (E) to 0.768 compared with 0.482.for traditionalⅠa/S *** Ia/S-adjusted SCS-CN method appears to be better appropriate for runoff prediction in the Three Gorges Area of China.

关键词： SCS-CN method direct runoff initial abstraction ratio rainfall-runoff events

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中国煤矿区主要生态环境问题及生态重建技术

生态学报 2003年第10期23卷 2144-2152页

作者：范英宏陆兆华程建龙周忠轩吴钢中国矿业大学(北京)恢复生态学研究所北京100083 中国科学院生态环境研究中心系统生态重点实验室北京100085

煤炭是我国最主要的一次性能源 ,而且这种能源结构在相当长的时间内不会改变。煤炭资源的开发对我国经济建设和社会发展起到了重要的支撑作用 ,但是煤炭的开采和利用引发了一系列的生态环境问题 ,矿区已成为典型的、严重受损生态系统。... 详细信息

煤炭是我国最主要的一次性能源 ,而且这种能源结构在相当长的时间内不会改变。煤炭资源的开发对我国经济建设和社会发展起到了重要的支撑作用 ,但是煤炭的开采和利用引发了一系列的生态环境问题 ,矿区已成为典型的、严重受损生态系统。矿区生态环境问题 ,已经成为制约矿区可持续发展乃至区域生态安全的重大隐患。矿区生态环境综合治理已迫在眉睫。综述了我国煤矿区主要的生态环境问题以及具体的治理方法和技术措施 ,包括矿井水和煤矸石的资源化、污染土地的修复。

关键词：煤矿区生态环境生态重建生态系统资源化

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生态系统服务建模技术研究进展

生态学报 2018年第15期38卷 5287-5296页

作者：李婷吕一河中国科学院生态环境研究中心城市与区域生态国家重点实验室北京100085 中国科学院大学北京100049

在生态系统服务评估模型的数量、类型及应用大量增加的背景下,为将生态系统服务评估有效整合到决策中,系统比较、甄别不同建模工具并筛选出适合决策需求的生态系统服务评估和模拟方法尤为必要。因此,归纳并总结了国内外现有的生态系统... 详细信息

在生态系统服务评估模型的数量、类型及应用大量增加的背景下,为将生态系统服务评估有效整合到决策中,系统比较、甄别不同建模工具并筛选出适合决策需求的生态系统服务评估和模拟方法尤为必要。因此,归纳并总结了国内外现有的生态系统服务评估模型的建模技术,包括:相关关系法、生物-物理过程法以及专家知识法;分别对其原理、差异、优缺点以及适用性进行了详尽阐释。大多数相关模型侧重于统计关系,相对容易创建和扩展,适用于生态系统服务的初始评估;生物-物理过程模型难以构建且不易获取,但提供了探索人-地系统相互作用和长期变化的有效机制;专家知识法有效结合了多种类型的知识体系,关注人类社会与自然系统之间反馈和交互动态的系统整合,但当评估地点发生变化时难以验证。在此基础上,介绍了基于上述3种建模技术的典型生态系统服务综合评估模型的发展和应用现状。各类建模技术面临着实用性和科学准确性之间的权衡。通过对不同建模技术的梳理与整合分析旨在提升当前生态系统服务研究的决策支撑能力,并为国内相关研究提供参考和借鉴。

关键词：生态系统服务建模技术模型决策支持

我国极端降水变化趋势及其对城市排水压力的影响

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生态学报 2018年第5期38卷 1661-1667页

作者：陆咏晴严岩丁丁赵春黎宋扬赵景柱中国科学院生态环境研究中心城市与区域生态国家重点实验室北京100085 中国科学院大学北京100049 北京大学北京100871 中国科学院城市环境研究所厦门361021

全球气候变化对水循环具有重要影响,其中极端降水的变化,对城市排水系统产生巨大冲击,造成城市内涝、交通瘫痪及生命财产损失等问题。为了揭示我国极端降水变化的趋势和区域特征,及其对城市排水系统的压力程度,使用中国气象数据中心1951... 详细信息

全球气候变化对水循环具有重要影响,其中极端降水的变化,对城市排水系统产生巨大冲击,造成城市内涝、交通瘫痪及生命财产损失等问题。为了揭示我国极端降水变化的趋势和区域特征,及其对城市排水系统的压力程度,使用中国气象数据中心1951—2.14年全国917个站点的逐日降水量,计算得到我国极端降水及其变化趋势的空间分布特征。并以我国2.9个主要地级城市为研究对象,构建了气候变化情景下的城市排水压力评估方法,预测并展望了不同时段和不同代表性浓度路径(RCPs)情景下,未来城市的排水压力情况。结果表明,我国极端降水整体上正随着全球气候变化而增加,全国年最大降水量变化速度的平均值为0.06mm/a,但并不是所有区域都具有一致性,具体表现为南部极端降水增加而北部缓解的规律。我国排水压力大的城市主要分布在南部和东北地区,城市排水基础设施完善的东部和极端降水量比较小的西部地区城市排水压力比较低,华北地区极端降水的随机性大,历史上出现的最大降水显著高于该地区常见大雨,也属于内涝风险比较大的区域。随着气候变化的影响,我国未来城市排水压力整体上升,城市未来短期排水压力相对于现有水平总体上升2.9%,具体75个城市的排水压力有所增加明显。且低应对的RCP8.5情景显著高于高应对的RCP2.6情景,这说明减缓气候变化的工作对降低我国城市内涝风险有比较大的积极意义。我国城市排水压力的变化也具有区域性,华北地区极端降水呈现减少的趋势,南部地区极端降水呈现增加趋势,加重了该地区原本就很高的城市内涝风险,需要政府采取积极措施提出有针对性的方案和考虑了气候变化的前瞻性城市排水规划,以降低城市排水压力,尽量减少城市内涝造成的经济损失。

关键词：城市气候变化极端降水排水压力