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"Landscape construction."
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Site Engineering Workbook
Developed to complement the Sixth Edition of Site Engineering for Landscape Architects, Site Engineering Workbook serves as a learning resource for students by providing study questions, practice problems, and diagrams designed to reinforce site engineering concepts. Answers to workbook problems are provided online for instructors, not in the back of the book.
eBook
Study on physical clogging process and practical application of horizontal subsurface flow constructed wetland
In view of the urgent concerns pertaining to the proliferation of rural wastewater discharges and the imperative for decentralized treatment, this article examines the phenomenon of physical clogging in a small-scale horizontal submerged flow artificial wetland system. Through a combination of experimental analysis and CFD-EDM numerical simulations, the impact of clogging on the hydraulic efficiency of the system was subjected to rigorous examination. Based on these findings, an innovative design strategy was proposed, namely the addition of vertical baffles. The experimental results demonstrate that this strategy can markedly prolong the duration of complete clogging of the system by up to 15% and enhance the hydraulic efficiency by 21%. Based on this, a small-scale horizontal submerged artificial wetland wastewater treatment system was designed for rural areas and successfully implemented in Fanrong Village, Rui’an City. This resulted in an enhanced wastewater treatment effect and an improved rural landscape. The findings of this study contribute to the development of a more rational and effective sewage treatment solution for rural areas.
Journal Article
Research on Evaluating the Characteristics of the Rural Landscape of Zhanqi Village, Chengdu, China, Based on Oblique Aerial Photography by Unmanned Aerial Vehicles
To achieve the transition of rural areas from traditional to modern, the visualization of rural landscape data and feature evaluations are essential. Landscape character assessment (LCA) is a well-established tool that was developed to assess and understand rural landscape features. In recent years, drones have become increasingly attractive for various applications and services due to their low costs and relative ease of operation. Unlike most previous studies that relied solely on drone-based remote sensing or visual esthetic evaluations, this study proposes an innovative assessment method based on landscape characteristic assessment (LCA) and oblique drone photography technology, supported by specific data and survey results. These include various landscape metrics, such as the Shannon diversity index (SHDI), Shannon evenness index (SHEI), vegetation coverage, landscape character zoning, and delineations of various ecologically sensitive areas. This method was applied to study Zhanqi Village in Chengdu, Sichuan Province, China and revealed some unique characteristics of this village. By categorizing and describing the landscape features, the study makes judgments and decisions about them. This is a beneficial attempt to apply the scientific methods of landscape assessments to the production management of aerial drone surveys. This method provides a comprehensive framework for evaluating rural landscape features and demonstrates that the combination of LCA and oblique drone photography technology is feasible for rural landscape research. Additionally, this study emphasizes the need for further research to explore the potential application of this method in continuously evolving urban and rural environments in the future.
Journal Article
Characteristics and Reduction of Carbon Dioxide (CO2) Emissions during the Construction of Urban Parks in South Korea
The purpose of this study was to determine the carbon dioxide emissions produced by each type of landscape construction required for each urban park design theme in South Korea and mitigation measures. This study obtained data from four urban park construction projects in South Korea and calculated the amount of carbon dioxide generated during the construction phase using the Tier 2 method based on the amount of construction machinery used according to Korean construction standards. The results show that the three cases beginning after 2020 generated about 1.0 tCO2 of carbon dioxide per 100 m2. In each case, mechanized construction accounted for more than 60% of the total trees planted, and more than 50% of the carbon dioxide was generated in constructing forest-themed parks. Transplanting trees in their natural state emitted at least 2.5 times and up to 9.6 times more carbon dioxide than planting new trees. Pavement construction generated about 340 to 390 tCO2, and block pavement construction generated about 20 to 70 tCO2 per 100 m2 more than pavement constructed by the wet construction method. Based on these results, in order to reduce carbon dioxide emissions, the first step should be to reduce the planting and transplanting of large trees, as this involves a high workload in terms of construction machinery at the design stage, and in the long term, it will be necessary to lead the “landscape of time” through the growth of plant materials. Second, the workload of construction machinery should be improved to induce carbon dioxide reductions through the revision of the Standard Unit Productivity Data on Construction Projects, and it is necessary to refer to past standards. Third, it may be desirable to use wet pavement, but there is a need to improve the sectional detail of block pavement to reduce mechanized work.
Journal Article
John Yeon landscape : design, conservation, activism
John Yeon (1910-1994) devoted his life to designing and preserving the spectacular terrain of the Pacific Northwest. John Yeon Landscape explores his roles as planner, landscape architect, and conservation activist. The son of a lumber baron who raised the money for and oversaw the construction of one of America's first scenic highways, the Columbia River Gorge Highway, Yeon tackled conservation causes with the eye of a landscape designer. He single-handedly protected two of the most prominent features of the Oregon Coast: Neahkahnie Mountain and Chapman Point. Stemming from an intimate understanding of both landscape and the timber business, Yeon's writing and advocacy played an important role in the establishment of Olympic National Park. And in the Columbia River Gorge, he led a national committee dedicated to its conservation as well as buying 78 acres of land there, transforming it into the Shire. This private, picturesque landscape showcased the beauty of the gorge and even served as the birthplace of the Columbia River Gorge National Scenic Act. Exhibition: Portland Art Museum, Portland, USA (13.05. - 03.09.2017).
Book
Northward Expanding Variation of Neo-Chinese-Style Landscape Influenced by Bamboos in China Under Climate Change Based on MaxEnt Model
Bamboos, as imperative vegetations in Chinese traditional gardens, also significantly influenced the recently originated Neo-Chinese-style landscape in China, and their habitat ranges have been profoundly impacted by global climate warming. Current studies on the distribution dynamics of bamboo reveal existent gaps in assessing the suitable distribution area of Neo-Chinese-style landscapes. In this study, we calculated the habitat ranges of two widely distributed bamboo genera (Phyllostachys and Bambusa) based on the optimal MaxEnt model, predicted their future (2050s, 2070s and 2090s) distributions under different climate scenarios (SSP1-2.6 and SSP5-8.5), and assessed the suitable distribution area of the Neo-Chinese-style landscape according to the distribution union of two bamboo genera. The results showed that the optimal MaxEnt model exhibited high evaluation indices (AUC > 0.90) for the two bamboo genera. The habitat ranges of bamboo genera were significantly influenced by the minimum temperature of the coldest month and would expand northwardly in the future. The suitable distribution area of Neo-Chinese-style landscapes covered about 71.3% cities of China, which would expand 5.9%–8.7% of cities and 10%–18.7% of cities under the SSP1-2.6 climate scenario and the SSP5-8.5 climate scenario, respectively. The suitable distributions are mainly located in the southeast part of China. This study advanced our understanding of the restriction of bamboo to the distribution of the Neo-Chinese-style landscape and provided valuable insights and a scientific basis for landscape construction in different areas of China.
Journal Article