Natural Regeneration Of Evergreen Broad Leaved Forest In The Thuong Tien Nature Reserve Kim Boi District Hoa Binh Province

ABSTRACT

To evaluate the current situation as well as research on the natural regeneration in

Thuong Tien nature reserve, I have conducted fieldwork, observation in the reserve. Survey

data through high tree, shrub and regeneration tree class in the study site. Mainly statistic

some information necessary to serve for the processing of data such as: name species, average

height, status and origin of trees. The research was performed from 31 July, 2015 in Thuong

Tien nature reserve. Based on results obtained I conducted data processing to bring out the

results as: formula composition of high trees and regeneration trees, calculate the density of

trees, phenotypic of distributions regeneration trees, origin of regeneration trees and number

of regeneration prospects. In addition, show relationship between high trees and regeneration

trees class. To improve the efficiency of research, I have based on the following purposes: (1)

investigated the status of regeneration at Thuong Tien nature reserve; (2) statistic about the

characteristics natural regeneration in the study site. This research is the best way to evaluate

the natural regeneration of evergreen broad - leaved forest. The findings of this research will

provide an important scientific basis to serve the in-depth study into the problem of forest

regeneration as well as assistance in finding the best way to manage forests in Vietnam.

TABLE OF CONTENT

CHAPTER I. INTRODUCTION ............................................................................................................ 1

CHAPTER II. LITERATURE REVIEW................................................................................................ 2

2.1. Basic concepts.................................................................................................................................. 2

2.1.1. Forest regeneration........................................................................................................................ 2

2.1.2. Forms of forest regeneration ......................................................................................................... 2

2.2. Study in foreign countries................................................................................................................ 3

2.2.1. Research on natural regeneration .................................................................................................. 3

2.2.2. Survey methods for natural regeneration ...................................................................................... 3

2.3. Study in domestic............................................................................................................................. 5

2.3.1. Research on natural regeneration .................................................................................................. 5

2.3.2. Survey methods for natural regeneration ...................................................................................... 6

2.4. Conclusion........................................................................................................................................ 6

CHAPTER III. GOALS AND OBJECTIVES ........................................................................................ 8

CHAPTER IV. STUDY SITES AND METHODS................................................................................. 9

4.1. Natural conditions............................................................................................................................ 9

4.1.1. Geographical location, boundary .................................................................................................. 9

4.1.2. Topography ................................................................................................................................. 11

4.1.3. Climate and hydrology ................................................................................................................ 11

4.2. Characteristics of livelihood, economic and social........................................................................ 14

4.2.1. Livelihood ................................................................................................................................... 14

4.2.2. Economic and social.................................................................................................................... 15

4.3. Study site........................................................................................................................................ 15

4.5. Survey methods.............................................................................................................................. 17

4.5.1. Determined forest status.............................................................................................................. 17

4.5.2. Trees investigation ...................................................................................................................... 17

4.5.3. High trees investigate .................................................................................................................. 18

4.5.4. Shrub investigate ......................................................................................................................... 19

4.5.5. Regeneration trees investigate..................................................................................................... 19

4.6. Data processing methods................................................................................................................ 20

4.6.1. Method determine the composition regeneration trees ............................................................... 20

4.6.2. Determine the phenotypic of distribution regeneration trees ...................................................... 21

4.6.3. Statistical methods for the quality of regeneration trees............................................................. 22

CHAPTER V. RESULTS AND DISCUSSION ................................................................................... 23

5.1. Current status of evergreen broad - leaved forest........................................................................... 23

5.2. High trees....................................................................................................................................... 23

5.3. Shrub layer ..................................................................................................................................... 26

5.4. Regeneration trees class................................................................................................................. 26

5.4.1. The composition regeneration trees ............................................................................................ 26

5.4.2. Phenotypic of distributions regeneration trees:........................................................................... 28

5.4.4. Quality of regeneration trees:...................................................................................................... 30

5.4.5. Regeneration prospects: .............................................................................................................. 31

5.4.6. Relationship between of high trees and regeneration trees class................................................. 33

CONCLUSION..................................................................................................................................... 37

6.1. Current status of evergreen broad - leaved forest........................................................................... 37

6.2. High trees and shrubs..................................................................................................................... 37

6.2.1. High trees.................................................................................................................................... 37

6.2.2. Shrub ........................................................................................................................................... 37

6.2.3. Regeneration trees....................................................................................................................... 37

REFERENCES...................................................................................................................................... 36

APPENDICES....................................................................................................................................... 37

LISTS OF TABLE

Table 4.1. Bioclimate index......................................................................................................12

Table 4.2. Categories of forest in Thuong Tien........................................................................16

Table 4.3. Data summary of high tree floor .............................................................................18

Table 4.4. Data summary of regeneration trees class...............................................................19

Table 5.1. Phenotypic of distributions index............................................................................28

Table 5.2. Statistics numbers of tree follows origin and height level .....................................29

Table 5.3. Rate of quality of regeneration trees .......................................................................31

Table 5.4. Rate of regeneration prospects ................................................................................31

Table 5.5. Relationship between of high trees and regeneration trees class ...........................35

LISTS OF FIGURE

Figure 4.1. Map of study site in Thuong Tien nature reserve ..................................................10

Figure 4.2. Bioclimate diagrams of Kim Boi – Hoa Binh........................................................13

Figure 4.3. Structure of the sample plot diagram .....................................................................17

Figure 4.4. Location of research area .......................................................................................18

Figure 5.1. Regeneration trees and division according to height levels and origin..................30

Figure 5.2. Rate of regeneration prospects in both 3 plots.......................................................32