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《农业现代化研究》:海南的农业资源特点和热带农业发展道路选择(海南大学园艺园林学院:钟利文)
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土壤的作用 a.供给草坪草根系呼吸作用所需的氧气; b.供给草坪草生长发育所需的水分; c.供给草坪草生长发育所需的养分; d.土壤结构的保持性决定草坪的耐践踏性
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黄山学院:《草坪科学与管理》第四章 草坪质量及养护管理强度(4.1-4.2)草坪质量评价概述、草坪外观质量评价
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黄山学院:《草坪科学与管理》第四章 草坪质量及养护管理强度(4.5-4.6)草坪质量的影响因素、草坪养护管理水平
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第一节 森林成熟(Forest maturity) 第二节 森林经营周期和调整期
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第一节 森林资源调查的意义 第二节 小班调查及划分小班的技术标准
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第一节森林区划 第二节组织森林经营单位
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Foreword he State of the World's Forests reports every two years on the status of forests, recent major policy and institutional developments and key issues concerning the forest sector. This is the fourth edition of the publication, the purpose of which is to make current, reliable and policy-relevant information widely available to polic makers, foresters and other natural resource managers, academics, forest industry and civil society. Our hope is that it will facilitate informed discussion and decision making with regard to the world,s forests As we approach the benchmark year of 2002, the tenth anniversary of the United Nations Conference on Environment and Development (UNCED), it is an opportune moment to take stock of the progress
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The status of forests: the Global Forest Resources Assessment 2000 ) emand has grown for a broad range of began in 1996. In that year, FAO convened an information on forests at the national and expert consultation in Kotka, Finland, where international levels. Reliable information on the some of the world's leading forest inventory status and trends o specialists provided technical advice on the scope decision-makers and implementation of FRA 2000 as well as on a orienting fores ch core set of forest-related definitions to be used in information is usef
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Association of southeast asian Nations The Association of Southeast Asian Nations (ASEAN) was established on 8 August 1967 in Bangkok with the signing of the Bangkok Declaration. At present, its members are Brunei Darussalam, Cambodia, Indonesia, the Lao People's Democratic Republic, Malaysia, Myanmar, the Philippines, Singapor
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