Biomass And Carbon Accumulation In Rhizophora Stylosa Griff Forest At Hoang Tan Commune Quang Yen Town Quang Ninh Province

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BIOMASS AND CARBON ACCUMULATION IN RHIZOPHORA STYLOSA Griff.

FOREST AT HOANG TAN COMMUNE, QUANG YEN TOWN, QUANG NINH

PROVINCE

Student: Lương Minh Hương; Advisor: Pham Minh Toai

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ACKNOWLEDGEMENT

Firstly, i would like to express my sincere graititude to my advisor Dr. Pham Minh Toai

for the continuous supports of my thesis and related research; for his patience, motivation and

immense knowledge. His guidance helped me in all the time of research and writing of this

thesis. I could not have imagined having a better advisor and mentor for my thesis.

My sincere thanks also go to Prof.Dr. Lee MacDonald who always supported me,

read all email and ried to help as much as possible with all of their enthusiasm.

I also decicate my grateful for all the Doctors, Master and Lectures in VNUF, who

gave me a lot of knowledge, favors as well as memories.

I would like to thank Dr. Nguyen Thanh Tien, Lecturer of Thai Nguyen University of

Agricultural and Forestry for help me with valuable documents useful for my thesis. Another

thank is for all the people in Center for Science and Agricultural and Forestry Production in

Quang Ninh who helped me during my researching process

Last but not least, I would like to thank to my family: my parents and my sister and

brother for theirsupporting me spiritually throughout writing this thesis and my life in general.

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ABSTRACT

Quang Yen district has 2,671 ha mangroves, compared to other regions in the

province, the area of forest here is not abundant, but in Quang Yen forest area is a very

important position in the protection dyke, discovered development of agricultural production,

aquaculture protection .This research concentratios on three objectives: Identify some

biomass and carbon accumulation characteristics and of R. stylosa Griff forest at the study

area; Determine the relationship between biomass and carbon accumulation in R. stylosa Griff

mangrove forests; Propose rapid methods for biomass identification of the studied forest.

To deal with objectives as above mentioned, the research established 30 temporary

plots of of 100m2

(10mx10m) each in R. stylosa Griff forest. The studied results show that

average 3.6 cm diameter trees about 0.6 kilograms of carbon accumulated in tree biomass.

Total biomass and carbon accumulation sharp fluctuations between tree density,

diameter, height. The total biomass of the populations average of 0.011 tons/ha, the amount of

carbon in forest biomass accumulation averaged 1.03 tons C/ha.

However, to calculate with greater accuracy (tighter correlation) we should use

correlation equation Y = a + b * X, specific: Y = 0.693 X + 0.347 and Y = 0.833 X + 0.347

with r2

= 0.193

In conclusion, the proportion of biomass and carbon accumulation in the individual

parts of the plant as well as the majority populations in the body parts and through the process

of analysis and correlation functions, we can easily calculate the dry biomass, cumulative

carbon content of mangrove species in correlation equation.

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LIST OF ABBRIVIATION

AGB: above ground biomass

C: Carbon

CO2: Carbon Dioxide

TAGB: The total biomass of population (ton/ha)

Wt: The total biomass of tree

Wsk: dry biomass of stem ( kg, ton/ha)

WBrk: dry biomass of branch ( kg, ton/ha)

Wrk: dry biomass of root ( kg, ton/ha)

Wlk: dry biomass of leaves ( kg, ton/ha)

Wst: fresh biomass of stem ( kg, ton/ha)

WBrt: fresh biomass of branch ( kg, ton/ha)

Wrt: fresh biomass of root ( kg, ton/ha)

Wlt: fresh biomass of leaves ( kg, ton/ha)

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TABLE OF CONTENTS

ACKNOWLEDGEMENT

ABSTRACT

LIST OF ABBRIVIATION

TABLE OF CONTENTS

LIST OF TABLES

LIST OF FIGURES

Chapter 1. INTRODUCTION ................................................................................................ 1

Chapter 2. NATURAL CONDITIONS OF STUDY AREA ................................................... 6

2.1. Geographic and topography conditions ............................................................................ 6

2.2. Climate characteristics: ................................................................................................... 6

2.3. Land and Water resoureces .............................................................................................. 7

Chapter 3. STUDY OBJECTIVES AND METHODS ............................................................ 8

3.1. Study objectives .............................................................................................................. 8

3.2. Method ............................................................................................................................ 8

3.2.1. Data sources ................................................................................................................. 8

3.2.2. Data collection method ................................................................................................. 8

3.2.3. Data analysis method .................................................................................................. 10

Chapter 4. RESULTS AND DISCUSSIONS ........................................................................ 13

4.1. Biomass characteristics of individual tree and populations............................................. 13

4.1.1. Structure of fresh biomass of individual trees ............................................................. 13

4.1.2. Structure of dry biomass of individual trees ................................................................ 14

4.1.3. Structure of the populations biomass .......................................................................... 15

4.2. Amount of carbon accumulation in different parts of individual trees and populations ........ 19

4.2.1 Carbon accumulation in the individual parts of plants .................................................. 19