Changes in Nitrogen Metabolism Indices of Arachis hypogea Leaves During Leaf Senescence The Effects of Simulated Acid Rain on Nitrogen Metabolism of Eucommia ulmoides Leaves Application of the Multi-Dimensional Sphere Model in Rangeland Monitoring Data Analysis Methane Fluxes from Mangrove Communities at Dongzhai Harbour, Hainan Distribution of Landscape Elements Along Environmental Gradients in Guandishan Forest Region Measurement of Canopy Respiration in Artificial Acacia mangium Forest in a Low Subtropical Hill Forest Region of Guangdong Patch Dynamics of Alkaline leymus chinensis Grassland Under Grazed and Ungrazed Conditions Genet Features and Ramet Population Features in the Rhizomatous Grass Species Psammochloa villosa Growth of the trees and saplings in the lower subtropical evergreen broad-leaved forest in Heishiding, Guangdong Province Architectural Analysis of Crown Geometry in Quercus liaotungensis Relationship Between air Pollution and the Decline of Cunninghamia lanceolata (Lamb.) Hook. in Dasheng Mountain, Hunan Preliminary Explanation of the Mechanism About Effects of Mercury on Wheat Seed Germination and Seedling Growth The Coupled Logistic Map Lattices of Describing Metapopulation dynamics Density and Growth Dynamics of Leymus chinensis Population The Application of the Ordered Plot Clustering to the Vertical Belt Partitioning of Vegetation of Main Mountains Shanxi The Dynamics of Soil Nh4+-N and NO3--N in a Pine Forest of Dinghushan, as Assessed by Ion Exchange Resin Bag Method A Preliminary Study on the Structure and Dynamic of Pinus Kwangtungensis Population in Karst Mountain of Maolan, China Characteristics of Spring Wheat Evapotranspiration at Oasis Ecological Environment and its Influencing Factors A Study on the Biomass and Productivity of the Natural Larix gmelinii Forests The Application of Pinus tabulaeformis Tree Rings in Revealing the Pollution History of Chengde City The Statistical Analysis Between Winter Steppe Grass Yield in Tiansan North Slope and Meteorologic Conditions Studies on the Laws of Evapotranspiration in a Chinese Fir Plantation and Discuss on Rapid Current Spread Method Application of the Fuzzy Graph Theory in the Vegetational Regionalism of Shanxi Province Study on the Sampling Methods for Korean Pine Forests Mixed with Deciduous Trees in the Lesser Xiao Xingan Mountains in Heilongjiang Province Classification of Vegetation on Hills and Lower Mountains in Vicinity of West Lake in Hangzhou The Application of the Sampling Method to the Plant Population Pattern in the Lower Subtropical Forest Photosynthetic Characteristics of Two Superhigh-yield Hybrid Rice An Approach to Estimating Respiration of Forest Community and Its Application Chemical Constituents of the Anemone tomentosa Root Chemical Constituents from the Bark of Cercidiphyllum japonicum Research Advances on the Mechanisms of Heavy Metal Tolerance in Plants Distribution Patterns of Chinese Beech (Fagus L.) Species in Relation to Topography Measuring Pollen Flow in Entomophilous Plants by Pollen Grain Dyeing The Acid-alkali-free Analysis of Quaternary Pollen Effects of Enhanced UV- B Radiation on Protein Metabolism of Bean Leaves Chemical Constituents of the Root of Pimpinella thellungiana Effect of Jasmonic Acid Methyl Ester on the Photosynthesis of Rice Seedlings Expression of Mouse MT-cDNA in Filamentous Cyanobacterium to Enhance Its Metal- resistance Identification and Functional Analysis of D1 snoRNA and Its Gene from Rice Studies of Signal Transduction of Salicylic Acid in Cucumber Cells Comparative Study of the Photooxidative Response in Leaf Discs from Plants with Different Photosynthetic Pathways The Chemical Components of Essential Oils from the Leaves of 110 Species and Cultivars of Citrus Plants Application of Comet Assay in Plant Protoplast Apoptosis Detection Peroxidation Damage of Oxygen Free Radicals Induced by Cadmium to Plant Construction of Molecular Linkage Map in Masson Pine Using RAPD Markers and Megaga metophytes from a Single Tree Preliminary Studies of the Identification and Expression of Metallothionein-Like Gene in Festuca rubra Studies on RNA in the Metaphase Chromosome of Zea mays by Electron Microscopy in Situ Hybridization Selection of Methionine-Resistant Variant in Onobrychis viciaefolia Scop. Pollen-Mesophyll Protoplast Fusion and Hybrid Plant Regeneration in Nicotiana Changes of Chlorophyll Metabolism During the Albinic Stage of a Wheat Mutant Isolation and Characterization of NH+4-Excreting Mutants of Enterobacter gergoviae Induction and Differentiation of Callus from Female Gametohyte Explants of Pinus bungeana Zucc. and P. tabulaeformis Carr. Origin of Megagametophytes with Supernumerary Egg Cells Occurring in Oryza sativa Structural Requirement for Clusters to be Reconstituted with the FeMoCo-Deficient Molybdenum-Iron Protein A Method of PollenSpore Analysis in Loess Behavior Study of NAD-Malic Enzyme in Facultative CAM Plants Preparation and Reconstitution of the Severely Metalloclusters-Deficient MoFe Protein of Nitrogenase from Azotobacter vinelandii Kinetic Analysis of the Effect of Lanthanum Chloride on Potassium ion Exudation of Corn Root Segments Climatic Gradiant of Main Vegetation Types in the Loess Plateau Region Embryological Studies in Rheum palmatum L. The Role of Methyl Jamonate(JA-Me)on Its Regulation of the photosynthetic Rate and the Translocation of Assimilates in Rice An Essential Balm Method for Preparing Rice Chromosomes A Study on External Factors for Control of Leaf Water Potential of Apricots Microsporogenesis, Megasporogenesis and the Formation of Male and Female Gametophyte in Coix lacryma-jobi L. Studies on the Alkaloids of Stephania lincangensis Division in Isolated Generative Cells of Allemanda neriilolia Megasporogenesis, Microsporogenesis and Development of Female and Male Gametophyte in Siraitia grovenorii The Chemical Constituents of Elsholtzia ciliata (Thund.) Hyland The Role of Polygalacturonase (PG) in Tomato Fruit Ripening and Effects of Divalent Metal Ions and Ethylene on PG Activity Purple-red Pigment Formed in Callus of Onosma paniculatum Bur.et French The Chemical Constituents of Antitumor from Sabina vulgaris Ant A Study on the Cotinus coggygria var. Cinerea Scrub in Qingzhou Mountain Area of Shundong Province The Chemical Constituents from Cynanchum Komarovii Al. Ilinski The Relationships between Nitrogen Fixation and Several Kinds of Energy Metabolism by Gloeocapsa sp Permeability of Various Photorespiratory Metobolites to Peroxisomal Membrane and Effect of Percoll on the Integrity of Peroxisomes The Isolation and Identification of Hydyotanthraquinone Investigation on the Development of Male Cametophyte in Anemarrhena Asphodeloides Relationship between the Hydroxylation capacity of Digitalis lanata Plants and Cell Culture Three New Glycosides from Halenia clliptica The Relationship Between the Intercellular Chromatin Migration of Pollen Mother Cells and the Changes of Chromosome Numbers During the Genesis of Male Gametes in Allium Cepa