Green Roof Plants


Book Description

A guide for architects, landscape designers, engineers, environmentalists and eco-aware gardeners, this text contains photographs and information for more than 200 species and cultivars of plants, including data on moisture needs, heat tolerance, hardiness, bloom color, foliage characteristics, and height.




The Comparative Impacts of Meadow and Sedum Species on Green Roof Hydrology


Book Description

The goal of this thesis is to compare the stormwater management potential of two common green roof plant communities - native grasses and forbs, known as "meadow" species, and Sedum species - over a range of irrigation volumes. The physical and biological mechanisms involved in water retention provided by the green roof vegetation was measured and compared. Plants retain stormwater through three different mechanisms: water consumed through the roots which remains in the biomass, water transpired through the leaves during photosynthesis, and water intercepted by the leaves which then evaporates. Overall, the meadow species consumed roughly 50% more water through their roots, while Sedum intercepted roughly 70% more water; however, these processes occurred over different timescales and at different magnitudes, and were significantly impacted by variations in climate. This study highlights the complexities of plant water relations, and will contribute to a more holistic understanding of green roof performance and benefits.







To Sedum Or Not to Sedum


Book Description

Green roofs have become increasingly popular to mitigate the negative impacts of urbanization and to restore key ecosystem functions in cities. In this thesis, I evaluate green roof functioning in two ways, using a meta-analysis of existing literature and a field-based manipulation experiment. The meta-analysis showed that Sedum survived better than non-Sedum, but there was no pattern of roof cooling and stormwater management. In the field, I conducted a factorial experiment using invasion theory as a management tool to increase native species diversity on extensive green roofs and evaluate green roof functioning. I hypothesized that resource addition via irrigation and disturbance treatments will enhance native species success and increase roof cooling and stormwater management. Results show plants aid in roof cooling and increase moisture retention, however evidence supporting diversity enhancing green roof functioning is lacking. Diversity effects on function theoretically require co-existence mechanisms, thus requiring observation over longer temporal scale.




Planting Green Roofs and Living Walls


Book Description

This book introduces a revolutionary new concept to gardeners. Planting on roofs and walls began in Europe, but it is now becoming popular all over the world. Green roofs and walls reduce pollution and run-off, and also help insulate and reduce the maintenance needs of buildings. Planting Green Roofs and Living Walls discusses the practical techniques required to make planting on roofs and walls a reality. It describes how roofs may be modified to bear the weight of vegetation, considers the different options for drainage layers and growing media, and lists the plants suitable for different climates and environments. This informative book will encourage gardeners everywhere to consider the enormous benefits to be gained from planting on their roofs and walls.




Living Roofs in Integrated Urban Water Systems


Book Description

With the infrastructure to manage storm water threats in cities becoming increasingly expensive to build or repair, the design community needs to look at alternative approaches. Living roofs present an opportunity to compliment ground-level storm water control measures, contributing to a holistic, integrated urban water management system. This book offers tools to plan and design living roofs, in the context of effectively mitigating storm water. Quantitative tools for engineering calculations and qualitative discussion of potential influences and interactions of the design team and assembly elements are addressed.




Green Roof Ecosystems


Book Description

This book provides an up-to-date coverage of green (vegetated) roof research, design, and management from an ecosystem perspective. It reviews, explains, and poses questions about monitoring, substrate, living components and the abiotic, biotic and cultural aspects connecting green roofs to the fields of community, landscape and urban ecology. The work contains examples of green roof venues that demonstrate the focus, level of detail, and techniques needed to understand the structure, function, and impact of these novel ecosystems. Representing a seminal compilation of research and technical knowledge about green roof ecology and how functional attributes can be enhanced, it delves to explore the next wave of evolution in green technology and defines potential paths for technological advancement and research.




Growing Greener Cities


Book Description

Nineteenth-century landscape architect Frederick Law Olmsted described his most famous project, the design of New York's Central Park, as "a democratic development of highest significance." Over the years, the significance of green in civic life has grown. In twenty-first-century America, not only open space but also other issues of sustainability—such as potable water and carbon footprints—have become crucial elements in the quality of life in the city and surrounding environment. Confronted by a U.S. population that is more than 70 percent urban, growing concern about global warming, rising energy prices, and unabated globalization, today's decision makers must find ways to bring urban life into balance with the Earth in order to sustain the natural, economic, and political environment of the modern city. In Growing Greener Cities, a collection of essays on urban sustainability and environmental issues edited by Eugenie L. Birch and Susan M. Wachter, scholars and practitioners alike promote activities that recognize and conserve nature's ability to sustain urban life. These essays demonstrate how partnerships across professional organizations, businesses, advocacy groups, governments, and individuals themselves can bring green solutions to cities from London to Seattle. Beyond park and recreational spaces, initiatives that fall under the green umbrella range from public transit and infrastructure improvement to aquifer protection and urban agriculture. Growing Greener Cities offers an overview of the urban green movement, case studies in effective policy implementation, and tools for measuring and managing success. Thoroughly illustrated with color graphs, maps, and photographs, Growing Greener Cities provides a panoramic view of urban sustainability and environmental issues for green-minded city planners, policy makers, and citizens.




Soil Conditions and Plant Growth


Book Description

Building on the extremely successful and popular Russell’s Soil Conditions and Plant Growth, Wiley-Blackwell is pleased to publish this completely revised and updated edition of the soil science classic. Covering all aspects of the interactions between plant and soil, Peter Gregory and Stephen Nortcliff, along with their team of internationally-known and respected authors, provide essential reading for all students and professionals studying and working in agriculture and soil science. Subject areas covered range from crop science and genetics; soil fertility and organic matter; nitrogen and phosphoros cycles and their management; properties and management of plant nutrients; water and the soil physical environment and its management; plants and change processes in soils; management of the soil/plant system; and new challenges including food, energy and water security in a changing environment. Providing a very timely account on how better to understand and manage the many interactions that occur between soils and plants, Soil Conditions and Plant Growth is sure to become the book of choice - as a recommended text for students and as an invaluable reference for those working or entering into the industry. An essential purchase for all universities and research establishments where agricultural, soil, and environmental sciences are studied and taught.