34
LOGO Dr. HU Lile 胡理乐 [email protected] September 30, 2009 1

Dr. HU Lile 胡理乐 lilehu@gmail - BfN · Process-based Models: such as LPJ: 2. Introduce to studies of carbon in China Methods for assessing carbon Brief review of studies on carbon

  • Upload
    vucong

  • View
    212

  • Download
    0

Embed Size (px)

Citation preview

LOGO

Dr. HU Lile 胡理乐 [email protected]

September 30, 2009

1

Contents

Brief Introduce to the Sino-German Project1

Introduce to Studies of Carbon in China2

Status of Producing Carbon Atlas for Jiangxi Province3

2

1. Brief Introduce to the Sino-German Project

Title: Sino-German Cooperation Platform for the Conservation of Species-Rich, highly Carbon-Storing Ecosystems

Objectives: Elaboration of a Carbon and Biodiversity Atlas for Jiangxi Province constitutes the scientific basis for such a strategy in China and facilitates the development of climate-proof protection and management activities for particularly valuable ecosystems.The atlas will also use spatial analysis to identify areas of high priority for biodiversity conservation and highly carbon storing ecosystems, providing a detailed overview of the spatial overlap of these important values for Jiangxi province.It will furthermore show where existing protected areas coincide with high carbon and biodiversity areas.

My job: Making the carbon atlas for Jiangxi Province of China

3

1. Brief Introduce to the Sino-Germany Project

Study site: Jiangxi Province, China1) Large forest coverage

60.05%, especially having large areas of bamboo

2) Various species Such as, High plants > 4000, among them, trees > 400

3) Numerous natural reserves Such as, Jinggang Mountain National

Nature Reserve &Poyang Lake National Nature Reserve.

4

The green is coveredby forests

5

Distribution of natural reserves

6

Typical Subtropical Evergreen Broadleaf Forest

7

Poyang Lake National Nature Reserve

8

2. Introduce to studies of carbon in China

Methods for assessing carbon

Brief review of studies on carbon in China

9

10

Com

plex

ity &

unc

erta

inty

Organ Scale

Tree

StandLocal

National

Global

11

▲Forest biomass: -trees -shrubs -grasses -mosses -lichens-others

Tree biomass componentsAbove-ground

foliagebranchesstem

Under-groundStumpcoarse rootFine root

Forest biomass and tree biomass

12

Biomass estimation on tree level

Difficulty &

uncertainty

Components Measurement methods

Branch and foliage 1) direct weighing 2) average branch 3) regression based on sample branches

Stem direct weighing

Stump

Roots

large root (>20 mm) direct weighing

coarse root (5-20 mm)

big fine root (2-5 mm) Systematical sampling by soil corer small fine root (<2 mm)

Tree biomass components and measurements

13

Estimation of tree biomass on stand level

▲Cutting sample trees in a sample plot

Measuring the dry mass of different biomass components

▲Building the relationship between carbon and diameter at breast height, tree height.

Up-scaling from a tree to a stand

14

Forest biomass estimation at large scale

▲Remote Sensing Methods

Forestry Inventory-based estimation

Process-based Models: such as LPJ

2. Introduce to studies of carbon in China

Methods for assessing carbon

Brief review of studies on carbon in ChinaStudies among different zones in ChinaStudies among different carbon banks

15

Studies among different zones in China

Some administrative zones have been given

more attention, such as,

Tibet Plateau

Northeastern China

16

Studies among different carbon banks

Forest > Soil > Grass > shrub > Wetland

(Fang et al 2001, Science)

17

Studies among different carbon banks

Forest > Soil > Grass > shrub > Wetland

Figure. The distribution map of soil carbon densities in China (Wang 2004)

18

Studies among different carbon banks

Forest > Soil > Grass > shrub > Wetland

Figure. Distribution of aboveground biomass density of the grassland in China (Piao et al 2004)

19

Studies among different carbon banks

Forest > Soil > Grass > shrub > Wetland

Although shrubs occupy larger area than trees in china, shrubs have

not been carried on national level inventory. So carbon in shrubs is less

known than the former three banks.

I have not found any papers about the carbon of wetland in China,

which was thought to be a large carbon bank.

20

3. Status of Producing Carbon Atlas for Jiangxi Province

Selecting Methods

Collecting Data

21

Selecting Methods

The carbon map will include 4 parts: forest, grass, shrub, and soil

As for forest carbon map, I will use the inventory-based method

As for grassland and shrubs, I will use remote sensing methods

I will make the soil carbon map by using the map of soil types for

Jiangxi province and the national soil survey

I have no idea about how to assess the carbon in wetland

22

Collecting Data

The inventory of forest in 2004 from Jiangxi Province Bureau

of Forestry

Books about national survey of grassland and soil

Remote sensing images

Vectored map of vegetation distribution for China

Data come from field survey

23

Collecting Data

24

Collecting Data

The books about national survey for grassland and soilDepartment of Animal Husbandry and Veterinary(中华人民共和国农

业部畜牧兽医司) , Institute of Grassland of the Chinese Academy of Agricultural Sciences(中国农业科学院草原研究所) &Commission for Integrated Survey of Natural Resources of the Chinese Academy ofSciences(中国科学院自然资源综合考察委员会). 1994. Data on grassland resources of China. Beijing: China Agriculture Science and Technology Press. (in Chinese)

National Soil Survey Office. Chinese Soils. Beijing: China Agriculture Press, 1998. 1-1252. (in Chinese)

National Soil Survey Office. Chinese Soil Cenus Records, Volumes1-6. Beijing: China Agriculture Press, 1995. (in Chinese)

25

Collecting Data

Distribution of soil typesin Jiangxi Province

26

Data come from field survey

Aims of field survey:

To survey the total carbon in typical forests in Jiangxi Province,

including aboveground (tree, shrub, herb) and underground

(root and soil)

To build the relationship between NDVI and the carbon in

grassland / in shrub

27

The first field survey

Date: Jul 20 to Sep 12, 2009

Site: Jinggang Mountains

Aims: To survey the total carbon in some typical forests

in Jiangxi Province

28

The first field survey

Selecting typical forests

29

The first field survey

30

31

The first field survey

Building the relationship between biomass and stem diameter for stem, root, leave of shrub.

Using the harvesting methods to measure the biomass of herb

32

The first field survey

33

34

for your attention