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astronomy & astrophysics; physics 82 physics 44 Plant Sciences 11
Physics 10 天文学 8 Chemistry 7
Hematology 7 Chemistry, Multidisciplinary 6 Biotechnology & Applied Microbiology 5
Ecology 5 Environmental Sciences & Ecology 5 Metallurgy & Metallurgical Engineering 5
昆虫学 5 Multidisciplinary 4 Science & Technology - Other Topics 4
天文学::太阳与太阳系 4 Biochemistry & Molecular Biology 3 Chemistry, Medicinal 3
Environment 3 Environmental Sciences 3 Genetics & Heredity 3
Materials Science 3 Materials Science, Multidisciplinary 3 Mycology 3
Oncology 3 Pharmacology & Pharmacy 3 Virology 3
materials science; physics 3 心理语言学 3 物理化学 3
畜牧、动物医学、狩猎、蚕、蜂 3 Astronomy & Astrophysics 2 Biochemistry & Molecular Biology; Plant Sciences 2
Cell Biology 2 Chemistry, Organic 2 Research & Experimental Medicine 2
chemistry 2 chemistry; science & technology - other topics; materials science; physics 2 农业基础科学 2
半导体物理 2 天文和天体物理 2 天文学::太阳与太阳系::太阳与太阳系其他学科 2
植物保护 2 海洋地质学 2 认知神经科学 2
Accelerometers - Gyroscopes - Inertial navigation systems - MEMS - Mirrors - Optical testing - Stabilization - Tracking (position) 1 Analysis 1 Astrophysics 1
Atmospheric turbulence 1 Biochemical Research Methods 1 Biodiversity & Conservation 1
Biodiversity Conservation 1 Cognitive neuroscience 1 Cognitive psychology 1
Cognitive psychology,Psycholinguistics 1 Ecology; Environmental Sciences; Toxicology 1 Electric Variables Measurements; Atomic and Molecular Physics; Physical Properties of Gases, Liquids and Solids; Inorganic Compounds; Organic Compounds;Chemical Products Generally; Chemical Reactions;Chemistry;.Fiber Optics; Electricity: Basic Concepts and Phenomena; Minerals 1
Electric Variables Measurements;.Organic Polymers; Light/Optics;Materials Science; Semiconductor Devices and Integrated Circuits; Electricity: Basic Concepts and Phenomena; Steel; Electric Components 1 Electric Variables Measurements;Solid State Physics;.Organic Polymers; Inorganic Compounds;Chemical Products Generally; Optical Devices and Systems; Semiconducting Materials; Electricity: Basic Concepts and Phenomena; Solar Power; Tin and Alloys; Energy Conversion Issues 1 Engineering 1
Engineering, Chemical 1 Engineering; Materials Science 1 Environmental Sciences & Ecology; Remote Sensing; Imaging Science & Photographic Technology 1
Fisheries 1 Forestry 1 Fused silica - Light transmission - Nanoparticles - Optical multilayers - Tantalum oxides 1
Gastroenterology 1 General & Internal Medicine (Provided By Clarivate Analytics) 1 Geography 1
Geriatrics & Gerontology; Oncology; Biochemistry & Molecular Biology; Demography; Chemistry; Urology & Nephrology 1 Hepatology 1 Horticulture 1
Immunology; Parasitology; Zoology; Mathematics 1 Immunology; Zoology; Biochemistry & Molecular Biology; Chemistry 1 Microbiology 1
Multidisciplinary Sciences 1 Oncology; Cell Biology 1 Pharmacology & Pharmacy; Geriatrics & Gerontology; Oncology; Urology & Nephrology; Immunology; Surgery 1
Physical Geography 1 Plant Sciences; Chemistry, Applied; Chemistry, Medicinal; Pharmacology & Pharmacy 1 Plant Sciences; Environmental Sciences & Ecology 1
Plant Sciences; Immunology; Pharmacology & Pharmacy; Cell Biology; Biochemistry & Molecular Biology 1 Plant Sciences; Pharmacology & Pharmacy 1 Plant Sciences; Pharmacology & Pharmacy; Immunology; Cell Biology; Oncology; Biochemistry & Molecular Biology 1
Remote Sensing 1 Soil Science 1 Solid State Physics; Inorganic Compounds;Chemical Products Generally;Materials Science; Nonferrous Metals and Alloys excluding Alkali and Alkaline Earth Metals; Structural Design, General;Construction Equipment and Methods; Surveying; Earthquake Measurements and Analysis 1
Thermodynamics 1 This paper presents a study on species diversity and its ecological service function in the plateau area in western Sichuan. The results show that species diversity in the plantations on the cutover land has a tendency to increase and that its ecological service function is to be improved with stand age growing. The species diversity in forest communities is also gradually increased on different succession stage till reaching a climax level. But the species diversity in the climax community is slightly decreased before it reaches a relatively constant status. Ecological service function of diversity is gradually strengthened with the progress of succession. In addition, species diversity in a stand in a similar site and at a same age differs among forest types. Species diversity index within a coniferous and broad-leaved mixed forest is larger than that within a coniferous forest. Meanwhile, species diversity enriches as the tree density increases 1 agriculture, multidisciplinary 1
biochemistry & molecular biology 1 biochemistry & molecular biology::chemistry, multidisciplinary:: 1 biochemistry & molecular biology; plant sciences 1
biophysics 1 biotechnology & applied microbiology; science & technology - other topics 1 cell biology 1
chemistry; materials science 1 chemistry; materials science; metallurgy & metallurgical engineering 1 chemistry; physics 1
construction & building technology; engineering 1

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