Soil properties are not only influenced by geographical factors, such as parent material, location and latitude. Often differences in land uses (forest, rubber plantation, paddy field, bare land) are known to have specific effects on soil properties. In the context of the project Living Landscapes China (LILAC) these effects were evaluated and the characteristics of soil types under changing conditions in two transects (altitude and parent material in transect 1, land uses in transect 2) in the Naban River Watershed National Nature Reserve were classified. We used field investigations to classify the soil types, as well as laboratory analyses to quantify specific characteristics in samples, taken from the profiles. Soil physical (bulk density, water content, texture) and chemical parameters (total contents of carbon, nitrogen and macro nutrients, ECEC) were investigated.
While differences in altitude did not seem to have profound influences on the soils, effects of land uses were pronounced especially in the first 10 to 20 cm of soil profiles. Soils under forests contain between 1.3 % - 2 % SOC and 0.15 % - 0.17 % TN in the Ah horizon. With contents of 1.2 % SOC and 0.11 % TN (Ah horizon) the profile under agricultural use (paddy rice) clearly contains less SOC and TN than the forest profiles. Fertilization also seemed to have an influence resulting in higher contents of Ca (6 - 12 times) and Mg (up to 4 times) for the topsoil as well as a higher effective CEC (7.9 - 9.3 cmolc/kg) for subsoil horizons of the paddy field compared to forest and rubber sites. The profile under bare land (transect 1) showed higher leaching of nutrients due to the missing soil cover. Thus, Al and Fe contents were enriched, while the effective CEC (5.1 cmolc/kg) was reduced and dominated by Al (> 80 %) compared to the other profiles. Differences between forest sites and the rubber stand (>25 years) were less obvious.
Inhaltsverzeichnis (Table of Contents)
- 1. The Naban River Watershed National Nature Reserve
- 1.1 General introduction
- 1.2 Geology
- 1.3 Soils and nutrients
- 2 Material and methods
- 2.1 Field investigations
- 2.1.1 Site selection
- 2.1.2 Soil profile description
- 2.1.3 Soil sampling
- 2.2 Laboratory analysis
- 2.2.1 Bulk density, fine earth density, water content
- 2.2.2 Texture
- 2.2.3 pH value
- 2.2.4 Soil organic carbon (SOC) and total nitrogen (TN)
- 2.2.5 Nutrients
- 2.2.6 Cation exchange capacity
- 3 Results
- 3.1 World Reference Base
- 3.2 Soil profile description
- 3.2.1 Profile 1
- 3.2.2 Profile 2
- 3.2.3 Profile 3
- 3.2.4 Profile 4
- 3.2.5 Profile 5
- 3.2.6 Profile 6
- 3.2.7 Profile 7
- 3.2.8 Profile 8
- 3.2.9 Profile 9
- 3.3 Transect 1
- 3.3.1 Depth and fine earth density
- 3.3.2 Texture
- 3.3.3 pH value
- 3.3.4 SOC and TN
- 3.3.5 Nutrients
- 3.3.6 Effective CEC and base saturation
- 3.4 Transect 2
- 3.4.1 Depth and fine earth density
- 3.4.2 Texture
- 3.4.3 pH value
- 3.4.4 SOC and TN
- 3.4.5 Nutrients
- 3.4.6 Effective CEC and base saturation
- 4 Literature
- 5 Annex
Zielsetzung und Themenschwerpunkte (Objectives and Key Themes)
This report aims to document the soil classification within the Naban River Watershed National Nature Reserve. The study uses field investigations and laboratory analysis to characterize the soil profiles and provide a detailed understanding of the soil properties within the reserve.
- Soil classification based on the World Reference Base.
- Analysis of soil physical properties (texture, density, water content).
- Assessment of soil chemical properties (pH, organic carbon, nutrients).
- Characterisation of soil profiles across different transects within the reserve.
- Comparison of soil properties across various locations within the Naban River Watershed.
Zusammenfassung der Kapitel (Chapter Summaries)
1. The Naban River Watershed National Nature Reserve: This chapter provides a general introduction to the Naban River Watershed National Nature Reserve, outlining its geographical context, geological features, and the overall characteristics of its soil and nutrient composition. It sets the stage for the detailed soil analysis presented in subsequent chapters by providing essential background information on the study area.
2 Material and methods: This chapter meticulously details the methodology employed throughout the study. It describes the field investigations, including site selection, soil profile descriptions, and soil sampling techniques. The laboratory analysis methods used to determine key soil parameters such as bulk density, texture, pH, organic carbon, total nitrogen, nutrient levels, and cation exchange capacity are also comprehensively explained. This section is crucial for ensuring the reproducibility and validity of the findings presented later in the report.
3 Results: This chapter presents the findings of the soil analysis conducted in the Naban River Watershed National Nature Reserve. It details the soil classification using the World Reference Base system, along with in-depth descriptions of individual soil profiles. The data on soil physical and chemical properties from both transects 1 and 2 are presented, offering a comprehensive overview of the spatial variability of soil characteristics within the reserve. The detailed profiles and transect data provide a foundation for further interpretation and discussion.
Schlüsselwörter (Keywords)
Soil classification, Naban River Watershed, World Reference Base, soil profile, texture, pH, soil organic carbon, total nitrogen, nutrients, cation exchange capacity, field investigations, laboratory analysis, transect analysis.
Naban River Watershed National Nature Reserve Soil Study: Frequently Asked Questions
What is the main focus of this report?
This report documents the soil classification within the Naban River Watershed National Nature Reserve. It characterizes soil profiles and provides a detailed understanding of soil properties within the reserve.
What methods were used to study the soil?
The study employed both field investigations (site selection, soil profile descriptions, soil sampling) and laboratory analysis (bulk density, texture, pH, organic carbon, total nitrogen, nutrient levels, and cation exchange capacity).
What are the key themes explored in the report?
Key themes include soil classification using the World Reference Base, analysis of soil physical properties (texture, density, water content), assessment of soil chemical properties (pH, organic carbon, nutrients), characterization of soil profiles across different transects, and comparison of soil properties across various locations within the reserve.
How is the soil classified in this report?
Soil classification is based on the World Reference Base system.
What soil properties were analyzed?
The analysis included physical properties like texture and density, and chemical properties such as pH, organic carbon (SOC), total nitrogen (TN), various nutrients, and cation exchange capacity (CEC).
How many soil profiles were described in detail?
The report provides detailed descriptions of nine soil profiles (Profile 1-9).
How many transects were studied, and what data was collected from them?
Two transects were studied. For each transect, data on depth, fine earth density, texture, pH value, SOC and TN, nutrients, and effective CEC and base saturation were collected.
What is the structure of the report?
The report is structured into five chapters: 1. The Naban River Watershed National Nature Reserve (introduction and background); 2. Materials and Methods (detailed methodology); 3. Results (presentation of findings, including soil profile descriptions and transect data); 4. Literature (references); and 5. Annex (additional materials).
Where can I find the keywords related to this study?
Keywords include: Soil classification, Naban River Watershed, World Reference Base, soil profile, texture, pH, soil organic carbon, total nitrogen, nutrients, cation exchange capacity, field investigations, laboratory analysis, and transect analysis.
- Quote paper
- Maria Wolff (Author), Lulu Zhang (Author), Gerhard Langenberger (Series editor), 2010, Soil classification in the Naban River Watershed National Nature Reserve, Munich, GRIN Verlag, https://www.grin.com/document/157695
