The Million Trees LA initiative intends to chart a course for sustainable growth through planting and stewardship of trees. This study measures LA's existing tree canopy cover (TCC), determines if space exists for 1 million additional trees, and estimates future benefits from the planting. Benefits were forecast for planting of 1 million trees between 2006 and 2010, and their growth and mortality were projected until 2040. LA's existing TCC was 21%. There is potential to add 2.5 million additional trees to the existing population of 10.8 million, but only 1.3 million of the potential tree sites are deemed realistic to plant. Thus, there is space for planting 1 million new trees. Benefits for the 1-million-tree planting were between $1.33 band $1.95 billion.

The Million Trees LA initiative intends to chart a course for sustainable growth through planting and stewardship of trees. The purpose of this study was to measure Los Angeles's existing tree canopy cover (TCC), determine if space exists for 1 million additional trees, and estimate future benefits from the planting. Highresolution QuickBird remote sensing data, aerial photographs, and geographic information systems were used to classify land cover types, measure TCC, and identify potential tree planting sites. Benefits were forecast for planting of 1 million trees between 2006 and 2010, and their growth and mortality were projected until 2040. Two scenarios reflected low (17 percent) and high (56 percent) mortality rates. Numerical models were used with geographic data and tree size information for coastal and inland climate zones to calculate annual benefits and their monetary value. Los Angeles's existing TCC was 21 percent, and ranged from 7 to 37 percent by council district. There is potential to add 2.5 million additional trees to the existing population of approximately 10.8 million, but only 1.3 million of the potential tree sites are deemed realistic to plant. Thus, there is space for planting 1 million new trees. Benefits for the 1-million-tree planting for the 35-year period were $1.33 billion and $1.95 billion for the high- and low-mortality scenarios, respectively. Average annual benefits were $38 and $56 per tree planted. Eighty-one percent of total benefits were aesthetic/other, 8 percent were stormwater runoff reduction, 6 percent energy savings, 4 percent air quality improvement, and less than 1 percent atmospheric carbon reduction. Recommendations included developing a decisionsupport tool for tree selection and tracking, as well as establishing a model parking lot greening program.

Case studies explore the Million Trees initiative in Los Angeles; the relationship of cap-and-trade policy, public health, greenhouse gas emissions and environmental justice in Southern California; Urbanization, vulnerability and environmental justice in the Brazilian cities of Rio de Janeiro, Curitiba and São Paulo, and in Antofagasta, Greater Concepción and Valparaiso in Chile; Sociospatial patterns of vulnerability in the American southwest; and Urban flood control and land use planning in Greater Taipei, Taiwan ROC.

From roots to canopy, a lush, verdant history of the making of California. California now has more trees than at any time since the late Pleistocene. This green landscape, however, is not the work of nature. It’s the work of history. In the years after the Gold Rush, American settlers remade the California landscape, harnessing nature to their vision of the good life. Horticulturists, boosters, and civic reformers began to "improve" the bare, brown countryside, planting millions of trees to create groves, wooded suburbs, and landscaped cities. They imported the blue-green eucalypts whose tangy fragrance was thought to cure malaria. They built the lucrative "Orange Empire" on the sweet juice and thick skin of the Washington navel, an industrial fruit. They lined their streets with graceful palms to announce that they were not in the Midwest anymore. To the north the majestic coastal redwoods inspired awe and invited exploitation. A resource in the state, the durable heartwood of these timeless giants became infrastructure, transformed by the saw teeth of American enterprise. By 1900 timber firms owned the entire redwood forest; by 1950 they had clear-cut almost all of the old-growth trees. In time California’s new landscape proved to be no paradise: the eucalypts in the Berkeley hills exploded in fire; the orange groves near Riverside froze on cold nights; Los Angeles’s palms harbored rats and dropped heavy fronds on the streets below. Disease, infestation, and development all spelled decline for these nonnative evergreens. In the north, however, a new forest of second-growth redwood took root, nurtured by protective laws and sustainable harvesting. Today there are more California redwoods than there were a century ago. Rich in character and story, Trees in Paradise is a dazzling narrative that offers an insightful, new perspective on the history of the Golden State and the American West.

Describes how the first settlers in California changed the brown landscape there by creating groves, wooded suburbs and landscaped cities through planting eucalypts in the lowlands, citrus colonies in the south and palms in Los Angeles.

This book is a printed edition of the Special Issue "Urban and Periurban Forest Diversity and Ecosystem Services" that was published in Forests

The successful reduction of urban air pollution is among the notable achievements of modern environmental law and policy. This remarkable study, focusing on two of the world’s most prominent cases, explores how people in the areas of Los Angeles and Beijing-Tianjin-Hebei (BTH) established governance processes to combat air pollution and how the major actors in each area worked to make their region a better place to live. Employing the expertise of teams of knowledgeable environmental law experts from both China and the United States, the authors identify and analyze similarities and differences in the respective legal and policy experiences as actors succeeded in greatly improving the air quality of their areas. Underpinned by a model of environmental governance developed by the authors and presenting an abundance of first-hand information from both areas, the study finds that, despite broad political and cultural differences in both regions, three political relations in governance processes emerge as enablers of effective reduction of air pollution: relation between regulators and the regulated communities; relation between all the supervisory political entities, such as legislatures, etc., and regulators; and relation between civil society (including news media and nongovernmental organizations) and polluters. Specific areas of regulation covered include transportation, ports, energy efficiency, utilities, oil refineries, building efficiency, renewable energy, coal dependency, and optimizing energy structure. With its sound, replicable model, its solid findings, and its enlightening conclusions, this incomparable work will prove of immeasurable value to administrative authorities and counsel worldwide engaged in combating air pollution. Moreover, its creative methodology is a signal contribution to the comparative study of environmental law and policy.