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Three-Dimension Green Biomass and Ecological Benefit Assessment of 10-to 15-year-old Taxus Chinensis Var. Mairei

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Three-Dimension Green Biomass and Ecological Benefit Assessm...

2.10 International Conference on remote sensing (ICRS 2.10)

作者： Liangsong Li 1 2.1 College of Forestry beijing Forestry university 2.beijing university of Chinese Medicine beijing ChinaJing Xie 1 2.1 College of Nature Conservation beijing Forestry university beijing China 2.department of Environmental Sciences university of Toledo Toledo OH USA

Taxus chinensis var. maire is an important medicinal, ecological and environmental friendly plant. To propose calculation methods of three-dimensional ecological benefit assessment index of Taxus chinensis var. maire, 10 main indicators of 90 Taxus chinensis var. maire at the age of 10 to 15 were measured and calculated, including heights of trees and crowns, diameter of crowns and roots, largest vertical section area of crowns, numbers of branches and leaves, length, width and area of leaves, based on consideration of situations such as altitude, coordinates, solar radiation, mean annual sunshine hours, rainfall and temperature, days with 4 or more than 4 power wind, frost-free period, etc. Ecological benefits of Taxus chinensis var. maire were analyzed using two- and three-dimensional models based on the research of three-dimensional vegetation volume, and the main results were analyzed and summarized. This will provide a scientific assessment standard for exploitation and territory plantation of Taxus chinensis var. maire.

关键词： taxus chinensis var. maire three-dimension green biomass ecological benefit assessment index model

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智能化土壤侵蚀遥感解译系统

水土保持学报 2002年第A1期16卷 54-57页

作者：杨胜天朱启疆李智广北京师范大学北京100875 水利部水土保持监测中心北京100053

从智能化土壤侵蚀遥感解译系统原理、系统总体结构、系统各模块结构和系统检验 4个方面阐述了智能化土壤侵蚀遥感解译系统的计算机实现过程和精度检验 ,认为通过遥感影像激发土壤侵蚀专家对区域土壤侵蚀因子及其土壤侵蚀信息的认识 ,并... 详细信息

从智能化土壤侵蚀遥感解译系统原理、系统总体结构、系统各模块结构和系统检验 4个方面阐述了智能化土壤侵蚀遥感解译系统的计算机实现过程和精度检验 ,认为通过遥感影像激发土壤侵蚀专家对区域土壤侵蚀因子及其土壤侵蚀信息的认识 ,并记录他们的知识数据 ,建立知识库 ,用于土壤侵蚀信息自动提取是一种新的科学。

关键词：专家系统土壤侵蚀遥感地理信息系统

维普期刊数据库

Incremental Study Based on Support Vector Used to Anomaly Detection for Hyperspectral Imagery

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Incremental Study Based on Support Vector Used to Anomaly De...

2.10 International Conference on remote sensing (ICRS 2.10)

作者： Liyan Zhang1 Derong Chen2.Yonghua Sun1 1.Key Laboratory of 3. Information Acquisition and Application of the Ministry of Education Key Laboratory of Integrated Disaster Assessment and Risk Governance of the Ministry of Civil Affairs Key Laboratory of Resource Environment and gis of beijing. Capital {2. university 2. College of Mechanical and Electrical Engineering beijing Institute of Technology beijing Peoples R China

While detecting anomalies in hyperspectral imagery with support vector data description （SVDD）, large numbers of operation was run because of the high dimension character of dataset and the complexity of background and the high miss rate was discovered because of the interfered background by interior anomalies. This paper used incremental support vector data description （ISVDD） method that samples are divided many sub- sample, and incremental study is designed to simplify the computation. On every sub-sample study, optimization is needed according of the support vectors obtained from above sub-sample and current sub-sample data. By the experiment on the HYMAP data, computation complexity of the algorithm decrease obviously and the computation speed increase highly under the similar detection effect compared with SVDD algorithm.

关键词： hyperspectral imagery anomaly detection incremental support vector data description

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基于gis的中国潜在水土流失评价研究

水土保持学报 2002年第4期16卷 49-53页

作者：马晓微杨勤科刘宝元北京师范大学资源与环境科学系北京100875 中科院水利部水土保持研究所陕西杨陵712100

中国是世界上水土流失最严重的国家之一,要进行水土流失的治理,首先要对中国的水土流失的现状和宏观趋势进行评价。研究试图采用全数字化方式,对中国潜在水土流失进行评价,为国家和区域水土保持和生态环境建设决策提供依据。研究结果包... 详细信息

中国是世界上水土流失最严重的国家之一,要进行水土流失的治理,首先要对中国的水土流失的现状和宏观趋势进行评价。研究试图采用全数字化方式,对中国潜在水土流失进行评价,为国家和区域水土保持和生态环境建设决策提供依据。研究结果包括:编制了中国水土流失类型图;确定了一套适合中国潜在水土流失宏观定量评价的指标体系,建立中国潜在水土流失评价数据库;以评价数据库为基础,进行了单因子分析和多因子评价分析,并基于"专家知识"完成了中国潜在水土流失评价与制图;在地理信息系统支持下,初步实现了多源数据集成的程序等。

关键词： gis 潜在水土流失评价中国地理信息系统

维普期刊数据库

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东北地区与长三角等地区域旅游合作对比研究

生态经济(学术版) 2010年第2期 329-331页

作者：张宁王煜琴马继刚李飞北京师范大学地理学与遥感科学学院山东旅游职业学院旅行社管理系

文章对比分析了国内区域旅游合作研究与实践的热点地区长三角、泛珠三角、环渤海三个区域的合作过程中取得的成功经验,指出了合作过程中存在的问题。通过东北地区与上述三个区域的对比,分析了东北地区区域旅游合作的基础、优势、存在的... 详细信息

文章对比分析了国内区域旅游合作研究与实践的热点地区长三角、泛珠三角、环渤海三个区域的合作过程中取得的成功经验,指出了合作过程中存在的问题。通过东北地区与上述三个区域的对比,分析了东北地区区域旅游合作的基础、优势、存在的问题,针对东北区域旅游合作的实际问题提出了相应建议。

关键词：区域旅游合作无障碍旅游区东北区

Study on the Change of Frozen Soil in Russia （North Asia） Region Based on NOAA Image

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Study on the Change of Frozen Soil in Russia （North Asia） ...

2.10 International Conference on remote sensing (ICRS 2.10)

作者： Han Xu Sun Yiquan Chen Ying Feng Zhongke Gong Yinxi beijing Forestry university Institute of {2. RS & GPS 10083.beijing ChinaCheng Yanpei CAGS Institute of Hydrogeology and Environmental Geology 050061 Shijiazhuang China

Frozen soil is a widespread kind of soil at high altitudes and high latitudes. It is divided into two parts, permafrost and seasonally frozen soil. It accounts for about 79% of northern hemisphere. As the largest country in the world, the area of Russia frozen soil occupies a large proportion. The use of satellite remote sensing technology has promoted the rapid development of permafrost {2. since 1970s. In this paper, NOAA remote sensing data preprocessing in Asian part of Russia was done. According to the band characteristics of AVHRR data, split window algorithm was used to calculate surface temperature. Thus, interpreted permafrost and seasonally frozen ground were interpreted, and added up the change of frozen soil area. The conclusion of this {2. is that permafrost is being degraded to seasonally frozen ground every year. In the end of this paper, the reasons and the hazards were analyzed.

关键词： Russia Frozen soil Split-window algorithms Land surface temperature

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黄河流域坡高地系统最小生态需水研究

山地学报 2004年第2期22卷 154-160页

作者：张远杨志峰北京师范大学环境学院北京师范大学环境学院水环境模拟国家重点实验室水沙科学教育部重点实验室北京 100875 中国环境科学研究院北京 100012水环境模拟国家重点实验室水沙科学教育部重点实验室北京 100875

以保护和恢复流域坡高地生态系统为目的,对坡高地最小生态需水问题进行研究,提出了坡高地生态需水和生态缺水的计算方法。以黄河流域为实例,在gis和遥感技术支持下对坡高地最小生态需水量和缺水量进行了计算,并从时空两个尺度揭示了黄... 详细信息

以保护和恢复流域坡高地生态系统为目的,对坡高地最小生态需水问题进行研究,提出了坡高地生态需水和生态缺水的计算方法。以黄河流域为实例,在gis和遥感技术支持下对坡高地最小生态需水量和缺水量进行了计算,并从时空两个尺度揭示了黄河流域坡高地生态系统最小生态需水的变化规律,研究成果可为流域生态环境建设和水资源合理配置提供依据。

关键词：生态需水坡高地系统时空变化黄河流域

Instructional Mutation Ant Colony Algorithm in Application of Reservoir Operation Chart Optimization

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Instructional Mutation Ant Colony Algorithm in Application o...

2.10 International Conference on remote sensing (ICRS 2.10)

作者： Shan YU The New and Renewable Energy of beijing Key Laboratory North China Electric Power university beijing China Chang-ming JI Wei XIE Fang LIU The New and Renewable Energy of beijing Key Laboratory North China Electric Power university beijing China

Guided by the chart that made according to the conventional method,the reservoir operation often cannot develop the maximum economic benefits,and a certain optimizing space exists in such a *** on the basic ant colony algorithm（ACA）,the mutation part improved with instruction in this paper was applied to the optimization of reservoir chart to auto-adjust the dispatching *** improvement enhances the global search ability of algorithm and makes full use of the historical and observed data,so that the algorithm can converge to the global optimal solution faster and *** the application,the instructional mutation ACA（IMACA）verifies the obvious optimization effect of the reservoir chart and remarkable economic benefit.

关键词： ant colony algorithm reservoir operation operation chart optimization

Controls of Land Uses on Soil Retention Curve with Fractal Dimension: Theory and Modeling

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Controls of Land Uses on Soil Retention Curve with Fractal D...

2.10 International Conference on remote sensing (ICRS 2.10)

作者： Yuhe Wu Hongjiang Zhang Wei Wang Jinhua Cheng Wenxing Lü College of Soil and Water Conservation beijing Forestry university beijing 100083.China

Use the soil water retention curve model to simulate the soil water retention curve in 3.different forestlands soil in Simian Mountains,and then the fractal dimensions of the curves of soil water retention were calculated with the corresponding experimental *** analyzing the relationship between fractal dimension and the soil texture we found that the fractal dimensions of the curves of soil water retention and soil particle sizes increase gradually with the increase of clay content or decrease of sand ***,the fractal dimensions of the curves of soil water retention are slightly different from that of particle size distribution,and there is a positive correlation between their fractal *** curves of soil water retention are predicted with the fractal model,and results showed that the simulated values of soil water retention curves are similar to the observed values in both coniferous mixed forest and *** of their correlation coefficient were larger than *** reveals that the curves of soil water retention can be predicted with the fractal model in both coniferous mixed forest and tillage in the experimental area,which shows great guiding significance.

关键词： Different land uses’condition soil water retention curve fractal dimension prediction model.