Dissertation > Excellent graduate degree dissertation topics show

Ecological Adaptability of Clonal Traits of the Natural Shrub, Sabina Vulgaris to Sandy Habitats in Mu Us Sandland

Author: LiuHaiDong
Tutor: WangLinHe；ZhangGuoSheng
School: Inner Mongolia Agricultural University
Course: Soil and Water Conservation and Desertification Combating
Keywords: Sabina vulgaris Clonal plants Cloning feature Soil moisture Soil nutrients Ecological Adaptability Mu Us Sandland
CLC: Q943.2
Type: Master's thesis
Year: 2003
Downloads: 128
Quote: 2
Read: Download Dissertation

Abstract


Application field experiment ecology methods research Sabina vulgaris in Mu Us Sandland scrublands, the distribution pattern of the soil resources and Sabina Boke Long ecological characteristics of sandy environment adaptability . The results are as follows : Sabina Vulgaris Shrub soil moisture , organic matter , total N, available K and available N ( available nitrogen ) nutrient content distribution with spatial heterogeneity . Scrublands, the surface layer (0 ~ 5cm) content of the soil in fine particles (0.25 ~ 0.02mm) , and soil moisture , organic matter , total N , available K and alkaline hydrolysis nitrogen content is relatively superior \from the inside out, shrub , decreased gradually . Scrublands lower soil moisture (20cm ) from the the thickets center to edge gradually increase . Vegetation cover, plant species and growth characteristics of the area, local soil heterogeneity have an important impact . Sabina vulgaris stolons the spacer length , branching intensity and branching angle plasticity . Ramet length , spacer length and branching intensity with stolons extended exponential model change the clonal architecture both \That Sabina vulgaris adventitious roots get resources to achieve in the stolons to top resistance and to the basic shared . Stolons been cut interference Sabina vulgaris through increased non- photochemical quenching ( NPQ ) reduce PS Ⅱ actual photochemical quantum yield (ΔF / Fm ') and apparent photosynthetic electron transport rate (ETR) and chlorophyll fluorescence characteristics of plasticity in response to protection sprig photosynthetic apparatus is not destroyed , and can reduce stomatal conductance in order to improve the efficiency of water use . The clonal integration role to maintain interference with ramets survival have an important role . Sabina vulgaris by photosynthetic branches and adventitious roots \Sabina vulgaris clonal plasticity behavior of resource sharing and clone division of its important ecological strategy to adapt to the Mu Us Sandland environment .

Related Dissertations

  1. Study on Spatial Variability and Assessments of Soil Nutrients and Heavy Metals in Intertidal Zones,S158
  2. Differeces in Physical and Chemical Properties and Organic Carbon Stability of Black Soil between Cropping Systems in Northeast China,S153
  3. Drip Irrigation Control System Based on Pulse Width Modulation (PWM),S152.7
  4. Effects of Different Corn Planting Densities on Soil Moisture and Yield in Rainfed Farming Land of North-east of China,S513
  5. A Preliminary Study on Bare Soil Extraction and Its Moisture Retrieval from High Resolution SAR Data,S152.7
  6. Experimental Study on Effect of Water Surface Accumulation Driven by Freeze-thaw Action of Two Types of Wetland Soil in Sanjiang Plain,S152
  7. A Method to Measure Soil Moisture Based on Terahertz Transmission TDS Spectrum,S152.7
  8. Wind erosion crisscross region erosion environmental evolution of multi- factor analysis,S157.1
  9. The Ecological Adaptability of Building Design Leads to the Landscape Design for the Ecological Adaptation Can Be Used in Practice and Explore the Technical Approach,TU986
  10. The Dynamics and Influence Factors of the Soil Water in Alnus Plantation of Northern Hunan Province,S792.14
  11. Climate Adaptability of Hybrid Maize Planting in Northeast of China,S513
  12. Assessment on Ecological Adaptability and Cultivation Mode Research of Organic Eco-Tobacco in Qiannan,S572
  13. Effects of Controlled-release Compound Fertilizer on Staple Food Crop Growth and Soil Nutrients,S145.6
  14. The Research on the Species Diversity and Soil Moisture of Main Vegetation Types in Sandy Land,S154
  15. Lhasa City, the main agricultural areas of soil moisture monitoring and warning system service platform,S152.7
  16. Potted plant growth soil moisture monitoring system,S152.7
  17. Study on Spatio-temporal Variability and Definition of Management Zones of Soil Nutrients on GIS,S158
  18. LIUPANSHAN Perfume River Basin Environmental Factors on Soil Moisture Variation impact study,S152.7
  19. The Studies of Agricultural Soils Comprehensive Evaluation and Improved Utilization of Honggu District of Lanzhou City,S158
  20. Litter-fall Characters and Hydrological Influences of Pinus Massoniana Forests Damaged by Acid Rain in Chongqing Southwest China,X503.235
  21. Study on the Photosynthetic Characteristics of Leymus Chinensis in Hulunber Meadow under Different Soil Moistures,S543.9

CLC: > Biological Sciences > Botany > Plant Cell Genetics > Plant Genetic Engineering
© 2012 www.DissertationTopic.Net  Mobile