Preface Introduction Section One Concept,Content and Characteristics of ASSC Ⅰ．Concept.of ASSC Ⅱ．Content of ASSC Ⅲ．Characteristics of ASSC Section Two Significance of ASSC and Overview of Its Development Ⅰ．Significance of ASSC Ⅱ．Development of ASSC Section Three Achievements of ASSC in China and a Brief Account of ASSC in Foreign Countries Ⅰ．Achievements of ASSC in China Ⅱ．A Brief Account of ASSC in Foreign Countries Section Four Prospects of ASSC Chapter One Distribution Features of Deserts in China and Division of Types of Aerial Sowing Areas Section One Distribution and Features of Deserts in China Ⅰ．Distribution Features of Deserts and Desertified Land Ⅱ．Regularity of Wind and Drift Sand Movement Ⅲ．Harmfulness of Wind-blown Sand Section Two Division of Types of Aerial Sowing Areas Ⅰ．Purpose of Division of the Types Ⅱ．Principles of Division of the Types Ⅲ．Division of the Types of Aerial Sowing Area Seceion Three Selection of Aerial Sowing Areas Ⅰ．Natural Conditions Suited for Aerial Sowing Ⅱ．Socio-economic Conditions Suited for Aerial Sowing Chapter Two Selection of Tree(Herbaceous)species of Aerial Sowing and Mixed Sowing Section One Brief Account of Selection of Plant Species for Aerial Sowing Section Two Principles for Selection of Tree Species for Aerial Sowing Ⅰ．Principles of Tree Species Selection Ⅱ．Principles of Herbaceous Species Selection Section Three Major Tree(Herbaceous)Species for Aerial Sowing Ⅰ．Hedysarum mongolicum Ⅱ．Hedysarum scoparium Ⅲ．Artemisia sphaerocephala Ⅳ．Calligonum mongolicum Ⅴ．Caragana microphylla Ⅵ．Hippophaë rhamnoides Ⅶ．Lespedeza bicolor Ⅷ．Haloxylon ammodendron Ⅸ．Sophora alopecuroides Ⅹ．Astragalus adsurgens Ⅺ．Melilotus albus Ⅻ．Pinus sylvestris var.mongolica Section Four Mixed Sowing Ⅰ．Advantages of Mixed Sowing Ⅱ．Principles,Tree Species and Types of Mixed Sowing Ⅲ．Methods of Mixed Sowing Ⅳ．Composition and Proportion of Tree Species for Mixed Sowing Chapter Three Sowing Season Section One Significance of the Determination of Sowing Season Section Two Primary Factors Affecting the Determination of Aerial Sowing Ⅰ．Temperature Ⅱ．Water Ⅲ．Wind Ⅳ．Growing period Ⅴ．Weather Section Three Determination of Sowing Season in Drought Years Ⅰ．Master the Law of Climatic Fluctuation Ⅱ．Selecting the Local Tree Species Section Four Suitable Aerial Sowing Season in Varied Desert Areas Ⅰ．Maowusu Desert and Kubuqi Desert Ⅱ．Tenggeli Desert and Wulanbuhe Desert Ⅲ．Horqin Sand Land and Hunshandake Sand Land Ⅳ．Hulunbeier Sand Land Ⅴ．Guerbantonggute Desert Ⅵ．Experiences and Lessons in Selecting the Sowing Season Chapter Four Seed Sowing Quantity Section One Principles of the Determination of Sowing Quantity Ⅰ．Making Sure of the Relationship Between Seed sowing Quantity and Plant Density Ⅱ．Making Sure of the Relationship Between the Seed sowing Quantity and the Aim of Utilization Section Two Factors Affecting the Determination for Seed Sowing Quantity Ⅰ．Seed Quality Ⅱ．Unexpected Seed and Seedling Loss Ratio Ⅲ．Even Ratio of the Falling Seed Section Three Calculation of the Seed Sowing Quantity Chapter Five Planning and Designing of Sowing Area Section One Field Survey Section Two Planning and Designing Ⅰ．Collection of Basic Information Ⅱ．Determination of Sowing Area,Course of Flight and Position of Navigation Mark Line Ⅲ．Technical Designing Ⅳ．Technical Calculation Section Three Navigation Mark Line Survey Ⅰ．Methods of Survey Ⅱ．Distance Calculation Between Navigation Marks Section Four Preparation of Data of Planning and Designing Ⅰ．Specifications of Planning and Designing Ⅱ．Mapping of Sowing Area Ⅲ．Operational Maps Chapter Six Seeds Treatment Section One Collecting,Selection and Checking of Seeds Ⅰ．Collecting Ⅱ．Selection Ⅲ．Test Section Two Treatment of Seeds Ⅰ．Treatment of Hedysarum scoparium Seeds Ⅱ．Shelling,Deawn and Dewaxing Treatment Chapter Seven Preparation Before Sowing Section One Plans Reporting to Higher Authority For Examination and Approval Ⅰ．Plans Reporting Ⅱ．Plans Approving Section Two Creation of Organization of Aerial Sowing and Development of Personnel Training Programmes Ⅰ．Creation of Organization of Aerial Sowing Ⅱ．Development of Personnel Training Programmes Section Three Preparation of Materials and Equipments Ⅰ．Airfield Ⅱ．Sowing Area Section Four Signing Contracts Ⅰ．Contracts with Airline Departments Ⅱ．Contracts of Management and Protection of Plantations Section Five Selection of Aircrafts,Airfields and Building of Provisional Airfields Ⅰ．Selection of Types of Aircrafts Ⅱ．Selection of Airfields Ⅲ．Building of Provisional Airfields Ⅳ．Checking and Accepting of the Provisional Airfields Ⅴ．Management and Repair of the Provisional Airfields Chpter Eight Technology of ASSC Operation Section One Trial Flight Section Two Choice of Flying Systems Ⅰ．Repeated Spraying Operations System Ⅱ．Single Flying Ⅲ．Return Flying Ⅳ．Shuttle-type Flying Ⅴ．Free Flying Section Three Climatic Conditions for Flight Ⅰ．Criteria of Climatic Conditions for Flight Ⅱ．Better Service of Weather Forecast Section Four Sowing Operations Ⅰ．Keeping Flying Direction of Navigation and Determination of Navigation Height and Width of Sowing Ⅱ．Correcting Off-course and Shift Ⅲ．Regulating the Mouth of Sowing Machine Ⅳ．Loading Operations and Management of Airfields Ⅴ．Navigation Systems and Radio Communications Ⅵ．Sowing Quality Control Section Five Technical Measures for Improving Sowing Quality and Reducing Cost Ⅰ．Technicial Measures for Improving Quality of Operations Ⅱ．Technical Measures for Reducing Cost Chapter Nine Prevention and Control of Rats,Pests,Diseases and Hares in the Aerial Sowing Area Section One Investigation of Rats,Pests,Hares and Diseases Ⅰ．Harmfulness of Rats Ⅱ．Harmfulness of Pests Ⅲ．Harmfulness of Hares Ⅳ．Harmfulness of Diseases Section Two Methods of Prevention and Control of Rats,Pests,Hares and Diseases Ⅰ．Prevention and Control of Rats Ⅱ．Prevention and Control of Pests Ⅲ．Prevention and Control of Diseases Ⅳ．Prevention and Control of Hares Chapter ten Investigation and Management of Aerial Sowing Land Section One Investigation of Grown-up and Establishment of Seedlings and Effects Ⅰ．Aims Ⅱ．Methods Ⅲ．Calculation Formula of Aerial Sowing Effects Ⅳ．Evaluation of Aerial Sowing Effects Section Two Management of Closing Sand Ⅰ．Importance of Management of Closing Sand Ⅱ．Effects of Closing Protection Ⅲ．Measurements of Closing Protection Chapter Eleven Introductions to the Typical Sowing Areas Ⅰ．Hong Shixia Sowing Area Ⅱ．Tai Gemiao Sowing Area Ⅲ．Toudao Shazi Sowing Area Ⅳ．Qianxie Rihua Sowing Area Ⅴ．South Gobi Sowing Area Ⅵ．Namu Sowing Area Chapter Twelve ASSC Benefits and Utilization of Aerial Sowing Forest Land Section One Reverse Affection of the Aerial Sowing Vegetation to the Sand drift Land Ⅰ．Rules and Features of Wind Speed Distribution Ⅱ．Wind-preventing Effect of Hedysarum scoparium and Hedysarum mongolicum Ⅲ．Wind-preventing Effect of Forest Land of Hedysarum scoparium and Hedysarum mongolicum of Different Agea Ⅳ．Rules of Wind Speed Distribution of Earth Surface of Isolet Green Islands with Hedysarum scoparium and Hedysarum mongolicum Section Two ASSC and Control of Sand-dust Storm Ⅰ．Sand-dust Storm Ⅱ．Cause of Sand-dust Storm Ⅲ．Harmfulness of Sand-dust Storm Ⅳ．Control the Sand-dust Storm by Enlarging the Sowing Area Section Three Usage of the Aerial Sowing Forest Land Ⅰ．Seed Collecting Base Ⅱ．Grass Reserve Base Ⅲ．Calamity-proof Base of Animal Husbandry Section Four Grazing Effect Analyses of the Aerial Sowing Shrub Ⅰ．Grazing in Winter and Spring Ⅱ．Influence of Grazing on the Biological Quality of the Vegetation Ⅲ．Influence on the Biological Quality of Vegetation After Grazing Ⅳ．Influence on the Vegetation in Different Period Ⅴ．Biological Quality Change of the Main Plants by Grazing Ⅵ．Grazing Value Ⅶ．Influence on the Sheep Growing by Grazing in the Aerial Sowing Forest Ⅷ．Water Change in the Sand Land and Recovery of the Vegeation after Grazing Section Five Rejuvenation and Regeneration of the Aerial Sowing Shrub Ⅰ．Keeping the Sand Land in a Sewri-stabilized State Ⅱ．Rejuvenation and Regeneration by Grazing Ⅲ．Planting Tree in Aerial Sowing Bush and Forming a Mixed Forest Appendix Ⅰ Technical Requirement of ASSC in China Appendix Ⅱ ASSC in Southeast Edge of Maowusu Sand Land Appendix Ⅲ Names of Plants Main References Abstract Plates
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