A Historical Study Of The Establishment And Expansion Of Redwood National Park In America(1960s-1970s)

California redwood has its unique ecological and economic value as a rare species in the United States.Late 19 th century,California redwood has become the first choice for building timber in the eyes of people,so a large number of timber merchants were attracted to harvest redwood forests.Therefore,there are many contradictions and struggles between timber merchants who only pursue economic value and redwood protectors.In the game and controversy that has lasted for more than half a century,the Redwood National Park was established in 1968.As an important environmental protection achievement in the United States in the 1960 s and 1970 s,the establishment of the Redwood National Park is of great significance.This article takes the historical process of save the redwood movement as the narrative context,tracing the historical background of the establishment of Redwood National Park,and the game process between timber merchants,redwood protectors and the government,focusing on the establishment and development of the Redwood National Park and the improvement of the management system,the historical significance and limitations of the Redwood National Park were analyzed.The complete text is divided into three parts: introduction,text and conclusion.The introduction part is based on the research results of save the California redwood movement at home and abroad,and pointed out the research contents,research significance and innovation.It mainly discusses the historical process of the California redwood forest protection movement.The main contents are as follows:The first chapter mainly examines the value and characteristics of California redwood forest,and sorts out the rise and initial development of the California redwood forest protection movement before the 1960 s,trying to trace the historical background of the establishment of the Redwood National Park.The second chapter,centering on the creation of Redwood National Park in the1960 s,examines the tortuous historical process of establishing Redwood National Park.After many political contests with supporters and opponents in the Senate and House hearings,and finally through the Redwood National Park Act in 1968,and established the Redwood National Park.The third chapter mainly explores the development of the protection activities of the redwood forest in the 1970 s,and analyzes the historical process of the standardization and expansion of the management of Redwood National Park.The fourth chapter mainly analyzes the establishment of Redwood National Park.First of all,it affirms the influence and historical significance of establishing Redwood National Park.Secondly,the limitations of Redwood National Park were summarized and analyzed.The conclusion part summarizes and enhances the paper based on the summary of the core content and viewpoints.