资源类型

期刊论文 207

会议视频 16

年份

2023 8

2022 23

2021 25

2020 9

2019 15

2018 15

2017 21

2016 16

2015 9

2014 11

2013 13

2012 11

2011 3

2010 11

2009 3

2008 6

2007 2

2006 3

2005 1

2004 1

展开 ︾

关键词

城市轨道交通 5

城镇建设 5

城市规划 4

环境 4

可持续发展 3

能源 3

地理信息系统 2

城市 2

城市发展 2

城市地下空间 2

城市水系统 2

城市河流 2

秦巴山脉区域 2

BIM 1

GIS 1

PPP融资 1

SANI 1

TOD 1

WBS矩阵 1

展开 ︾

检索范围:

排序: 展示方式:

The effect of texture and irrigation on the soil moisture vertical-temporal variability in an urban artificiallandscape: a case study of Olympic Forest Park in Beijing

Xiaofeng ZHANG,Xu ZHANG,Guanghe LI

《环境科学与工程前沿(英文)》 2015年 第9卷 第2期   页码 269-278 doi: 10.1007/s11783-014-0672-y

摘要: Soil moisture variability in natural landscapes has been widely studied; however, less attention has been paid to its variability in the urban landscapes with respect to the possible influence of texture stratification and irrigation management. Therefore, a case study was carried out in the Beijing Olympic Forest Park to continuously monitor the soil in three typical profiles from 26 April to 11 November 2010. The texture stratification significantly affected the vertical distribution of moisture in the non-irrigated profile where moisture was mostly below field capacity. In the profile where irrigation was sufficient to maintain moisture above field capacity, gravity flow led to increased moisture with depth and thus eliminated the influence of texture. In the non-irrigated sites, the upper layer (above 80 cm) exhibited long-term moisture persistence with the time scale approximating the average rainfall interval. However, a coarse-textured layer weakened the influence of rainfall, and a fine-textured layer weakened the influence of evapotranspiration, both of which resulted in random noise-like moisture series in the deeper layers. At the irrigated site, frequent irrigation neutralized the influence of evapotranspiration in the upper layer (above 60 cm) and overshadowed the influence of rainfall in the deeper layer. As a result, the moisture level in the upper layer also behaved as a random noise-like series; whereas due to deep transpiration, the moisture of the deep layer had a persistence time-scale longer than a month, consistent with characteristic time-scales found for deep transpiration.

关键词: moisture vertical distribution     moisture temporal variation     texture stratification     irrigation     meteorological forcing     urban landscape    

From understanding to designing soundscapes

Jian KANG

《结构与土木工程前沿(英文)》 2010年 第4卷 第4期   页码 403-417 doi: 10.1007/s11709-010-0091-5

摘要: Soundscape represents a step change in the field of environmental acoustics in that it combines physical, social, and psychological approaches. Although the term soundscape was introduced in the 1960s, significant attention to it has mainly been paid in the last decade or so in the community of environmental acoustics by researchers and recently by practitioners including policy makers. This paper explores the current situation and future challenges in soundscape. Starting with a framework on research and practical needs in soundscape and a brief introduction of some recent/current networks, activities, projects, and publications, this paper then presents a systematic review of recent progress in soundscape research and practice. A short review of the soundscape research in China is also given.

关键词: soundscape     environment     sound     design     urban     landscape    

Social media and mobility landscape: Uncovering spatial patterns of urban human mobility with multi source

Yilan Cui, Xing Xie, Yi Liu

《环境科学与工程前沿(英文)》 2018年 第12卷 第5期 doi: 10.1007/s11783-018-1068-1

摘要:

Check-in and survey data are explored to identify personal activity-specific places.

Ways for detecting and moderating sample bias of Weibo check-in data is proposed.

A graphic representation of urban activity intensity in Beijing, China is presented.

The potential application of Weibo check-in data for urban analysis is introduced.

关键词: Social media     Human mobility     Population bias     Sample reconstruction     Data integration    

城市景观水体什刹前海与罗马湖水环境污染特征比较研究

年跃刚,闫海红,宋英伟,殷勤,雪梅

《中国工程科学》 2010年 第12卷 第6期   页码 25-27

摘要:

通过对城市景观水体什刹前海与罗马湖的调查和监测,分析了北京典型景观水体的水质状况与生态环境特征,探讨了两水体形成透明度差异的原因。监测结果表明,什刹前海东岸透明度达70 cm,而罗马湖透明度为27 cm,分析其差异的主要原因是磷浓度的差异,由此可见,控制磷的浓度是保持城市景观水体水生态系统健康的重要因素。

关键词: 城市景观水体     什刹前海     罗马湖     污染特征    

以东为鉴 秀丽晚成——西部风景园林开发浅议

孟兆祯

《中国工程科学》 2000年 第2卷 第10期   页码 56-58

摘要:

首先我们要站在人类社会生产与自然环境协调的可持续发展的高度着手综合的国土规划,建立从总体到单体的规划设计科学序列。现阶段城市的本质应为人类聚居并藉以生存的生活环境。城市化进程与自然环境间并非针锋相对的破坏关系。城市形象不仅仅是建筑加道路的形象,而是以人工美入自然,将城市和建筑融汇到自然环境中的形象。我们美好的前景是将城市和建筑建在绿色环境中。风景名胜区和城市园林的建设当前仍须将保护自然资源放在首位。要创造特色,从各市的自然环境和人文脉络中捕捉城市风景园林的特色,不要盲目跟风。秀丽山川,大器晚成。扎实积累,功到必成。

关键词: 城市化进程     风景名胜区     城市园林    

Urban landscape classification using Chinese advanced high-resolution satellite imagery and an object-oriented

Li-gang MA,Jin-song DENG,Huai YANG,Yang HONG,Ke WANG

《信息与电子工程前沿(英文)》 2015年 第16卷 第3期   页码 238-248 doi: 10.1631/FITEE.1400083

摘要: The Chinese ZY-1 02C satellite is one of the most advanced high-resolution earth observation systems designed for terrestrial resource monitoring. Its capability for comprehensive landscape classification, especially in urban areas, has been under constant study. In view of the limited spectral resolution of the ZY-1 02C satellite (three bands), and the complexity and heterogeneity across urban environments, we attempt to test its performance of urban landscape classification by combining a multivariable model with an object-oriented approach. The multiple variables including spectral reflection, texture, spatial autocorrelation, impervious surface fraction, vegetation, and geometry indexes were first calculated and selected using forward stepwise linear discriminant analysis and applied in the following object-oriented classification process. Comprehensive accuracy assessment which adopts traditional error matrices with stratified random samples and polygon area consistency (PAC) indexes was then conducted to examine the real area agreement between a classified polygon and its references. Results indicated an overall classification accuracy of 92.63% and a kappa statistic of 0.9124. Furthermore, the proposed PAC index showed that more than 82% of all polygons were correctly classified. Misclassification occurred mostly between residential area and barren/farmland. The presented method and the Chinese ZY-1 02C satellite imagery are robust and effective for urban landscape classification.

关键词: ZY-1 02C satellite     Classification     Urban     Multi-variable model    

The ecological system and the regionalization of landscape reconstruction in northwest of China

Peicheng LI,Guoyuan DU,Qilei LI,Jinfeng WANG,Feimin ZHENG

《农业科学与工程前沿(英文)》 2014年 第1卷 第4期   页码 291-298 doi: 10.15302/J-FASE-2014033

摘要: The northwest of China is a vast area with abundant resources and significant potential for development. However, the ecological system is extremely vulnerable to damage and must be managed carefully. Thus, the Chinese government is strengthening research on improvement and reconstruction of the ecological system and landscape in northwest of China while moving forward with large-scale development in west China. The disadvantages and vulnerabilities in the northwest area in China are presented. It is suggested that the reconstruction of landscape should be conducted by step by step regionalization across the various ecological systems in the 3.04 million km northwest area of China. The first level regionalization results of reconstruction of landscape are discussed.

关键词: reconstruction of landscape     ecological system     the northwest area of China     science and technology action    

基于模糊综合评价法的内蒙古达里诺尔湖水环境质量评价

张生,李畅游,梁喜珍,史小红

《中国工程科学》 2010年 第12卷 第6期   页码 28-31

摘要:

采用模糊综合评价法对内蒙古达里诺尔湖水质现状进行评价,利用2008年达里诺尔湖水质实际监测数据,确定了评价因子和各因子的权重,建立了评价因子的隶属函数和模糊矩阵,最后对达里诺尔湖水质现状进行综合评价。评价结果符合实际情况,说明模糊综合评价法用于达里诺尔湖水质评价的合理性和可靠性,并对控制湖泊水质污染提供了一定的理论依据。

关键词: 模糊数学     水质评价     达里诺尔湖    

Research on a quantificational method for chromatic-light emotions of architectural wall coatings in landscape

Ting WANG, Ma JIAN, Gang LIU, Xiaoxi LIU, Mingyu ZHANG

《结构与土木工程前沿(英文)》 2010年 第4卷 第4期   页码 498-502 doi: 10.1007/s11709-010-0096-0

摘要: Research on quantificational methods for chromatic-light emotion is an effective way of finding out the laws of light cognitive impact and the solution to the problem on application of light color in landscape lighting. This paper took chromatic-light-induced-emotion towards architectural wall coatings in landscape as the research object. The methods in use were real-state simulation and laboratory quantitative study. Consequently, the study successfully extracted light emotional factors and the rule of predictability to assist landscape light professionals.

关键词: landscape illumination     architectural wall coatings     chromatic-light emotion     quantitative research    

FLOWERING PLANTS AND ENTOMOPHAGOUS ARTHROPODS IN THE AGRICULTURAL LANDSCAPE: A PRACTISE-ORIENTED SUMMARY

《农业科学与工程前沿(英文)》 2022年 第9卷 第1期   页码 63-74 doi: 10.15302/J-FASE-2021427

摘要:

There is a growing demand for high-quality agricultural products and more countries have adopted landscape management by sowing flowering plants in agricultural fields as an important branch of conservation biological control. However, there has been less concern over the interactions and trade-offs between floral plants and entomophagous arthropods. This paper review progress in pollen/nectar feeding habits of entomophagous insects including parasitoids and predators which are important natural enemies of crop pests in agricultural fields. Factors that influence the preference of different guilds of natural enemies are reviewed to guide the selection of flowering plants in conservation biological control practices. Most studies find that floral resources have positive effects on both biological traits of natural enemies and their abundance and diversity, and this is believed to contribute greatly to pest control. Furthermore, the potential impacts of floral resources on crop yields are also discussed with an emphasis on a guild of entomophagous insects that provides both pest control and pollination services.

 

关键词: ecosystem services / flowering plants / natural enemies / nectar / pollen    

nitrogen/phosphorus concentration and hydraulic retention time for bloom control in reclaimed water landscape

《环境科学与工程前沿(英文)》 2022年 第16卷 第10期 doi: 10.1007/s11783-022-1564-1

摘要:

● A new model for bloom control in open land scape water was constructed.

关键词: Reclaimed water landscape     Algal bloom     Nitrogen and phosphorus     Hydraulic retention time     Threshold     Control model    

Analysis of the genomic landscape of primary central nervous system lymphoma using whole-genome sequencing

《医学前沿(英文)》   页码 889-906 doi: 10.1007/s11684-023-0994-x

摘要: Primary central nervous system lymphoma (PCNSL) is an uncommon non-Hodgkin’s lymphoma with poor prognosis. This study aimed to depict the genetic landscape of Chinese PCNSLs. Whole-genome sequencing was performed on 68 newly diagnosed Chinese PCNSL samples, whose genomic characteristics and clinicopathologic features were also analyzed. Structural variations were identified in all patients with a mean of 349, which did not significantly influence prognosis. Copy loss occurred in all samples, while gains were detected in 77.9% of the samples. The high level of copy number variations was significantly associated with poor progression-free survival (PFS) and overall survival (OS). A total of 263 genes mutated in coding regions were identified, including 6 newly discovered genes (ROBO2, KMT2C, CXCR4, MYOM2, BCLAF1, and NRXN3) detected in ≥ 10% of the cases. CD79B mutation was significantly associated with lower PFS, TMSB4X mutation and high expression of TMSB4X protein was associated with lower OS. A prognostic risk scoring system was also established for PCNSL, which included Karnofsky performance status and six mutated genes (BRD4, EBF1, BTG1, CCND3, STAG2, and TMSB4X). Collectively, this study comprehensively reveals the genomic landscape of newly diagnosed Chinese PCNSLs, thereby enriching the present understanding of the genetic mechanisms of PCNSL.

关键词: primary central nervous system lymphoma     whole-genome sequencing     TMSB4X     copy number variation     gene mutation    

Climate change and China’s mega urban regions

Chaolin GU, Sunsheng HAN

《结构与土木工程前沿(英文)》 2010年 第4卷 第4期   页码 418-430 doi: 10.1007/s11709-010-0075-5

摘要: China’s mega urban regions are focal points of economic development and environmental concerns. This paper positions four mega urban regions (i.e., the Yangtze River Delta, the Pearl River Delta, the Bohai Bay Area, and the South-eastern Fujian Province) along China’s coast into the national economy and elaborates their development challenges and planning innovations. Mega urban regions in China are spatial consequences of rapid economic transition. They deserve close scrutiny and demands for innovative planning responses in order to maintain their key role in driving economic growth but limiting their greenhouse gas emission.

关键词: climate change     mega urban region     urban planning    

Multi-timescale optimization scheduling of interconnected data centers based on model predictive control

《能源前沿(英文)》 doi: 10.1007/s11708-023-0912-6

摘要: With the promotion of “dual carbon” strategy, data center (DC) access to high-penetration renewable energy sources (RESs) has become a trend in the industry. However, the uncertainty of RES poses challenges to the safe and stable operation of DCs and power grids. In this paper, a multi-timescale optimal scheduling model is established for interconnected data centers (IDCs) based on model predictive control (MPC), including day-ahead optimization, intraday rolling optimization, and intraday real-time correction. The day-ahead optimization stage aims at the lowest operating cost, the rolling optimization stage aims at the lowest intraday economic cost, and the real-time correction aims at the lowest power fluctuation, eliminating the impact of prediction errors through coordinated multi-timescale optimization. The simulation results show that the economic loss is reduced by 19.6%, and the power fluctuation is decreased by 15.23%.

关键词: model predictive control     interconnected data center     multi-timescale     optimized scheduling     distributed power supply     landscape uncertainty    

Treatability aspects of urban stormwater stressors

Anthony N. TAFURI, Richard FIELD

《环境科学与工程前沿(英文)》 2012年 第6卷 第5期   页码 631-637 doi: 10.1007/s11783-012-0420-0

摘要: Pollution from diffuse sources (pollution from contaminants picked up and carried into surface waters by stormwater runoff) has been identified as a significant source of water quality problems in the U.S. scientists and engineers continue to seek solutions that will allow them to optimize existing technologies and develop new ones that will provide the best possible protection to people, wildlife, and the environment. This paper addresses the various pollutants or stressors in urban stormwater, including flow (shear force), pathogens, suspended solids/sediment, toxicants (organic and metals), nutrients, oxygen demanding substances, and coarse solids. A broad overview of the pollutants removed and the removal mechanisms by and of conventional best management practices (BMPs) is also presented. The principal treatment mechanisms of conventional wet ponds, vegetative swales/buffer strips, and wetlands are sedimentation and filtration. These mechanisms have the capability to remove significant amounts of suspended solids or particulate matter and are a vital component of strategies to reduce pollutant loads to receiving waters. In addition, because most of the nation’s receiving water violations are caused by pathogen indicator bacteria, it is of utmost importance that research efforts address this problem. Further research is also needed on the treatment of emerging contaminants in BMPs and on the costs and affects of maintenance and maintenance schedules on the long-term performance of BMPs.

关键词: stormwater     wet weather flow     urban runoff    

标题 作者 时间 类型 操作

The effect of texture and irrigation on the soil moisture vertical-temporal variability in an urban artificiallandscape: a case study of Olympic Forest Park in Beijing

Xiaofeng ZHANG,Xu ZHANG,Guanghe LI

期刊论文

From understanding to designing soundscapes

Jian KANG

期刊论文

Social media and mobility landscape: Uncovering spatial patterns of urban human mobility with multi source

Yilan Cui, Xing Xie, Yi Liu

期刊论文

城市景观水体什刹前海与罗马湖水环境污染特征比较研究

年跃刚,闫海红,宋英伟,殷勤,雪梅

期刊论文

以东为鉴 秀丽晚成——西部风景园林开发浅议

孟兆祯

期刊论文

Urban landscape classification using Chinese advanced high-resolution satellite imagery and an object-oriented

Li-gang MA,Jin-song DENG,Huai YANG,Yang HONG,Ke WANG

期刊论文

The ecological system and the regionalization of landscape reconstruction in northwest of China

Peicheng LI,Guoyuan DU,Qilei LI,Jinfeng WANG,Feimin ZHENG

期刊论文

基于模糊综合评价法的内蒙古达里诺尔湖水环境质量评价

张生,李畅游,梁喜珍,史小红

期刊论文

Research on a quantificational method for chromatic-light emotions of architectural wall coatings in landscape

Ting WANG, Ma JIAN, Gang LIU, Xiaoxi LIU, Mingyu ZHANG

期刊论文

FLOWERING PLANTS AND ENTOMOPHAGOUS ARTHROPODS IN THE AGRICULTURAL LANDSCAPE: A PRACTISE-ORIENTED SUMMARY

期刊论文

nitrogen/phosphorus concentration and hydraulic retention time for bloom control in reclaimed water landscape

期刊论文

Analysis of the genomic landscape of primary central nervous system lymphoma using whole-genome sequencing

期刊论文

Climate change and China’s mega urban regions

Chaolin GU, Sunsheng HAN

期刊论文

Multi-timescale optimization scheduling of interconnected data centers based on model predictive control

期刊论文

Treatability aspects of urban stormwater stressors

Anthony N. TAFURI, Richard FIELD

期刊论文