neespi research of dry land processes chen xi zhang jiebin · chen xi zhang jiebin xinjiang...
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NEESPI Research of Dry Land Processes
Chen XiZhang JiebinXinjiang Institute of
Ecology and Geography, CAS
NEESPI Summit, 3-4 May 2007, Helsinki, Finland
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Research Scope
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Focus One
Integrated Ecosystem Assessment of West China
(MAWEC)
Leading Scientist: Liu Jiyuan
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Focus Two
Land use and land cover change in Xinjiang over past 50 years and its
ecological effects
Leading Scientist: Chen Xi
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LUCC data in the raster format
1171 relief maps at the scale of1:100 000 in the 1950-1960s’
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1970’s 112 MSS images
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Xinjiang TM Image mosaic in 1990 from 112 Landsat TM scenes
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Xinjiang ETM Image mosaic in 2000 from 111 Landsat ETM scenes
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LUCC in Xinjiang in the Vector Format
Xinjiang’s LUCC maps in the 1960s (left) and 2000s (right)
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Drivers
山区温度
- 10123
1961 1965 1969 1973 1977 1981 1985 1989 1993 1997年
温度
/°C
山区降水
250350450550
1961 1965 1969 1973 1977 1981 1985 1989 1993 1997年
降水
/mm
河流径流
2025303540
1961 1965 1969 1973 1977 1981 1985 1989 1993 1997年
径流
/108 m3
Temperature
Precipitation
Runoff
In the 1990’s
the average annual temperature increased by 0.78℃,
annual precipitation increased by 12~15% in the mountainous regions and by 30~40% in the plain areas
annual runoff volume increased by 19.4%
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Ecological Effects
- 80. 00
- 60. 00
- 40. 00
- 20. 00
0. 001978 1980 1982 1984 1986 1988 1990 1992 1994 1996 1998 2000 2002 年
地下水埋深(m)
S3号观测井S58号观测井S4号观测井17号观测井
- 16. 00
- 12. 00
- 8. 00
- 4. 00
0. 001978 1980 1982 1984 1986 1988 1990 1992 1994 1996 1998 2000 2002 年
地下水埋深(m)
7号观测井8号观测井12号观测井S18号观测井
The groundwater table was declining at an average annual rate of 20-45cm in the alluvial fanThe groundwater table was very slowly rising at an average annual rate of 2-7cm in the alluvial plain
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The mineralization of groundwater was relative stable in the alluvial fan oasis,usually <0.5g/l
generally rising in the alluvial plain oasis, indeed worse >2g/l
图 2 矿化度变化趋势Fig.1 Trend of mineralization
0
500
1000
1500
2000
2500
3000
1986 1988 1990 1993 1995 1997 1999 2001
矿化
度(
mg/
l)上部 中部下部
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Mountain lakes seldom influenced by human-induced LUCCLakes in the Middle reaches ( for example Bosten lake) doubly influenced by the runoff in the mountain and LUCC in the plain: dynamic water table and mineralizationLakes in the lower reaches reduced usually, most dry up.
1 04 5
1 04 6
1 04 7
1 04 8
1 04 9
1 95 6 1 9 60 1 9 6 4 19 6 8 1 97 2 1 9 76 19 8 0 1 98 4 1 9 8 8 1 9 9 2 19 9 6 2 0 00
年平
均水
位(m
)
00 .20 .40 .60 .8
11 .21 .41 .61 .8
2
1958 1962 1966 1970 1974 1978 1982 1986 1990 1994 1998 2002
矿化
度(g
/l)
2 0
2 5
3 0
3 5
4 0
4 5
5 0
5 5
6 0
19 5 6 1 96 0 1 9 6 4 1 9 6 8 1 9 7 2 1 9 7 6 1 9 8 0 1 9 8 4 1 9 8 8 1 9 9 2 1 99 6 2 00 0
年径
流量
(10
8 m3 )
1 04 5
1 04 6
1 04 7
1 04 8
1 04 9
1 95 6 1 9 60 1 9 6 4 19 6 8 1 97 2 1 9 76 19 8 0 1 98 4 1 9 8 8 1 9 9 2 19 9 6 2 0 00
年平
均水
位(m
)
00 .20 .40 .60 .8
11 .21 .41 .61 .8
2
1958 1962 1966 1970 1974 1978 1982 1986 1990 1994 1998 2002
矿化
度(g
/l)
2 0
2 5
3 0
3 5
4 0
4 5
5 0
5 5
6 0
19 5 6 1 96 0 1 9 6 4 1 9 6 8 1 9 7 2 1 9 7 6 1 9 8 0 1 9 8 4 1 9 8 8 1 9 9 2 1 99 6 2 00 0
年径
流量
(10
8 m3 )
Wat er Level Change of t he Bost en l ake
Mineralization change in the Bosten lake
Runoff change in the Kaidu reiver
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0
10
20
30
40
50
60
东疆 准北 准南 伊犁 塔北 塔西 塔南 全疆
80年代初( ear l y 1980s)90年代末( l at e 1990s)
g/kg
Change of organic matter content in seven regions in the past 20 years
东疆:The east area of Xinjiang; 准北:The north area of Jungar Basin;准南:The south area of Jungar Basin; 伊犁:Yili area;塔北:The north area of Tarim Basin;塔西:The west area of Tarim Basin;塔南:The south area of Tarim Basin
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0
20
40
60
80
100
120
东疆 准北 准南 伊犁 塔北 塔西 塔南 全疆
80年代初( ear l y 1980s)90年代末( l at e 1990s)
mg/k
g
The change of available nitrogen content in seven regions in the past 20 years
东疆:The east area of Xinjiang; 准北:The north area of Jungar Basin;准南:The south area of Jungar Basin; 伊犁:Yili area;塔北:The north area of Tarim Basin;塔西:The west area of Tarim Basin;塔南:The south area of Tarim Basin
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0
10
20
30
40
50
60
东疆 准北 准南 伊犁 塔北 塔西 塔南 全疆
80年代初( ear l y 1980s)90年代末( l at e 1990s)
mg/k
g
The change of available phosphorus content in seven regions in the past 20 years
东疆:The east area of Xinjiang; 准北:The north area of Jungar Basin;准南:The south area of Jungar Basin; 伊犁:Yili area;塔北:The north area of Tarim Basin;塔西:The west area of Tarim Basin;塔南:The south area of Tarim Basin
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Focus Three
Aeolian Desertification in ChinaLeading Scientist: Wang Tao
Aeolian Dust and Its Impact on Environment and Climate (ADEC) (Sino-Japan Joint
Project)Leading Scientist: Zhou Hongfei
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ADEC Monitoring Network
Network observation at 10 Network observation at 10 sites;sites; FFrom 80 E to 140 Erom 80 E to 140 E
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Dust outbreak mechanism
Dust Dust outbreak outbreak mechanismmechanism
In situ ObservationIn situ Observation Network Observation
Network Observation
GCM Dust ModelGlobal dust supply for the
past 50 years
GCM Dust ModelGlobal dust supply for the Global dust supply for the
past 50 yearspast 50 yearsLidar, Radiometer, and Sampler Net.
Long-range Transport
LidarLidar, Radiometer, , Radiometer, and Sampler Net. and Sampler Net.
LongLong--range range TransportTransport
Dust Radiative forcing
Global Supply
Dust Radiative forcing
Global Supply
ADEC ADEC FirstFirst SStagetage
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ADEC 2nd ADEC 2nd SStagetage
Former G1
In situ Obs..
Former G2
Network Obs.
Former G3
Model development
VerificationVerification
DataDataHow much (ton /Km2) is the dust supply from desert?
How much (W/m2) is the radiativeforcing of dust?
Dust supply to the atmosphere from
desert by use of in situobservation and
model
Observation and analysis of
radiative forcing of aeolian dust and its optical characteristcs
Model study and historical data analysis
VerificationVerification
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Focus Four
Environmental Changes and Socio-Economic Consequence in Mongolian
Plateau Region
Leading Scientist: Lin Zhen
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Cooperation Framework
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LUCC, Drivers and Impact
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Focus Five
LUCC, Drivers and Impact in Central Asia
Leading Scientists: Chen Xi
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Research Scope
Population:60 000 000Area: 4000 000km2
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Data base in the Central Asia
CBERS/IRS/SPOT
MODIS/NOAA/GMS
Fukang Desert Ecosystem Station
MODIS/ NOAA Receiving systems, which can receive images covering the Central Asia
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5.8 m IRS images covering the most areas of the Central Asia
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15 m Landsat ETM images covering the entire Central Asia
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International Station for Altai Mountain EcosystemInternational Station for Altai Mountain Ecosystem
Kazakh Station for Desert- steppe EcosystemKazakh Station for Desert- steppe Ecosystem
Test Zone for the CA
Networking
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Focus Six
Institutional Framework, Partnership and Arrangement
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Institutional Framework
NEESPI InternationalNEESPI International
Regional FRC for Dry Land Processes StudiesRegional FRC for Dry Land Processes Studies
Chinese Partners:Chinese Partners:
Relevant Institutes of the CASRelevant Institutes of the CASRelevant UniversitiesRelevant Universities
Relevant Bureaus of Relevant Bureaus of CompetentCompetentMinistries and Provincial Ministries and Provincial
GovernmentsGovernments
Related International Related International Partners:Partners:
need to be identifiedneed to be identified
Common InterestsArrangement
DonorsNetworking
Sharing &Exchange
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