Soil Information System of Taiwan Soils and Its Applications by Horng-Yuh Guo and Zueng-Sang Chen
Transcript of Soil Information System of Taiwan Soils and Its Applications by Horng-Yuh Guo and Zueng-Sang Chen
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Soil Information System of Taiwan Soils and
Its Applications
Horng-Yuh GUO and Zueng-Sang CHEN*
Division of Agricultural Chemistry, Taiwan Agricultural Research InstituteCouncil of Agriculture, Taichung, Taiwan
and Department of Agricultural Chemistry, National Taiwan University
Taipei, Taiwan
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Taiwanis located at the convergent boundary between the Philippine Sea plate and the continental margin of the Eurasian plate.
Philippine Sea plate
Eurasian plate
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Taiwan is an island located about 150 km off the southeast coast of mainland China. It covers 36,000 km2 in area with more than 200 peaks over 3,000 m in altitude.
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The landscape decreases westward and eastward in altitude from the north-south trending ridge.
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The active tectonics of Taiwan results in five geologic provinces.
I : Coastal PlainII : Western FoothillsIII : Central RangeIV : Longitudinal ValleyV : Coastal Range
1999 Chichi Earthquake
1991 HualianEarthquake
Central Range
EWCoastal Range
The Philippine Sea plate subducts beneath the Eurasian plate offshore eastern Taiwan, and overrides the South China Sea floor of the Eurasian plate south of Taiwan
Taiwan has experienced oblique arc-continent collision since about 5 Ma, and is still active.
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8 (before the earthquake in Sep 21, 1999)
(after the earthquake in Sep 21, 1999)
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Map of Vegetation Types of Taiwan(cited from Taiwan flora)
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Rural soils of Taiwan620 soil series in Taiwan rural soils can be classified as 9 Soil Orders.The major Soil Orders are Inceptisols(51.0%), Alfisols (21.8%), Ultisols(9.6%) and Entisols (6.8%) of total rural soils. Other major Soil Orders are Oxisols(0.3%), Histosols (0.04%) and Vertisols (0.01%) of total rural soils.Soil mapping scale is 1:25,000
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Forest soils in Taiwan9 Soil Orders were classified for the 432 soil series in Taiwan forest soils. The major Soil Order are Inceptisols (44.2%), Entisols (35.3%), Alfisols (10.8%) and Ultisols (7.5%) of total forest soils in Taiwan (Hseu et al., 2008). Each of Andisols and Mollisols occupied as only 1 % of total rural soils (Tsai and Chen, 2011). Other Soil Orders are Spodosols (0.06%), Histosols (0.01%) and Vertisols (0.01%) of total forest soils (Tsai and Chen, 2004). Soil mapping scale is 1:25,000
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Distribution of Major Soil Groups In Taiwan
Soil Map Geology Map
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Entisolsdistributedin recentalluvial soils
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Inceptisols distributed in older alluvial soils
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Ultisols distributed in the terrace
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Terrace deposit
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Changhua Fault TouliuHill
B?
A
Nantou HillChelungpu
Fault
APakua
Tableland
PK1
PK6PK5
PK4
PK3 PK2
450
400
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300
Alti
tude
(m)
Distance (km)0 5 10
AA
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Choshui river
Chins
hui ri
ver
B
PK-1 PK-2 PK-3 PK-4 PK-5 PK-6
Field Morphology :
The color of the soils graded from strong brown to yellowish red, which in trend roughly agree with the ascending altitude of terraces.
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1 2 3 4 5 6 7 8 9 10
(Entisols)
(Entisols)
(Entisols)
(Inceptisols)
(Inceptisols)
(Inceptisols)
(Alfisols)
(Spodosols)
(Ultisols)
(Ultisols)
2;3;6
5;6
8;9
9;10
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Distribution of major soil groups in Taiwan Distribution of major soil groups in Taiwan
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Application of Soil Information System (SIS) in Taiwan
Crop production and environmental conservationReasonable fertilizer application and recommendation systemDifferent development projectsLand assessment of low productivitySoil liquefaction assessmentFood safety assessmentLand cover crop assessmentSoil carbon stock assessment
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Soil management Group of county of central Taiwan
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Soil fertility grating in villages of southern Taiwan (1 point=6.25 ha)
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Soil nutrient (K) content in villages of southern Taiwan (1 point=6.25 ha)
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Land cover crops of Tainan city of southern Taiwan
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Prediction the area for producing Cd Ricein whole Taiwan
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Soil liquefaction assessment in central Taiwan
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DistributionofDistributionofZinctotalcontentsZinctotalcontents ininTaiwanTaiwan(totalsampleno.101,209)(totalsampleno.101,209)
0.1N HCl
188,590.86 942,954.30
15.83 79.15
5.85 29.25
825.18 4,125.90
99% 80.33 401.65
0.1N HCl
104,459.75 522,298.75
8.57 42.85
4.77 23.85
332.75 1,663.75
99% 47.93 239.65
0.1NHCl(mg/kg)
0.1NHCl(mg/kg)
0.1NHCl(mg/kg)
0.1NHCl(mg/kg)
130,722
101,209
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Soil Organic carbon Stocksby Using Estimated Bulk Density in the Rural Soils of Taiwan
To mapping the soil carbon stocks of the rural soils (0-150 cm) from legacy data in Taiwan
A pedotransfer function (PTF) was developed based on mean depth (d) of the sample and soil organic carbon (SOC) from 184 samples:
To predict and mapping the SOC stocks from 33,173 soil pedons
Bd = 1.3026 + 0.169 log(d) 0.0256 [ln(SOC)]2
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SOCstock(030cm)ofChanghua county
Contour map:SOC stock (kg C m-2)
Post map: location of 9573 soil pedons
175000 180000 185000 190000 195000 200000 205000 210000 215000
2635000
2640000
2645000
2650000
2655000
2660000
2665000
2670000
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175000 180000 185000 190000 195000 200000 205000 210000 215000
2635000
2640000
2645000
2650000
2655000
2660000
2665000
2670000
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SOCstock(3060cm) oftheChanghua county
Contour map:SOC stock (kg C m-2)
Post map: location of 7635 soil pedons
175000 180000 185000 190000 195000 200000 205000 210000 215000
2635000
2640000
2645000
2650000
2655000
2660000
2665000
2670000
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175000 180000 185000 190000 195000 200000 205000 210000 215000
2635000
2640000
2645000
2650000
2655000
2660000
2665000
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SOCstock(0150cm) oftheChanghua county
Contour map:SOC stock (kg C m-2)
Post map: location of 9573 soil pedons
175000 180000 185000 190000 195000 200000 205000 210000 215000
2635000
2640000
2645000
2650000
2655000
2660000
2665000
2670000
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175000 180000 185000 190000 195000 200000 205000 210000 215000
2635000
2640000
2645000
2650000
2655000
2660000
2665000
2670000
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SOCstock(030cm) oftheTaoyuan county
Contour map:SOC stock (kg C m-2)
Post map: location of 9,818 soil pedons
250000 255000 260000 265000 270000 275000 280000 285000 290000
2745000
2750000
2755000
2760000
2765000
2770000
2775000
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250000 255000 260000 265000 270000 275000 280000 285000 290000
2745000
2750000
2755000
2760000
2765000
2770000
2775000
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SOCstock(030cm) oftheTainancounty
Contour map:SOC stock (kg C m-2)
Post map: location of 12,271 soilpedons160000 170000 180000 190000 200000
2535000
2540000
2545000
2550000
2555000
2560000
2565000
2570000
2575000
2580000
2585000
2590000
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160000 170000 180000 190000 200000
2535000
2540000
2545000
2550000
2555000
2560000
2565000
2570000
2575000
2580000
2585000
2590000
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SOCstock(0150cm) oftheTainancounty
Contour map:SOC stock (kg C m-2)
Post map: location of 12,271 soil pedons
160000 170000 180000 190000 200000
2535000
2540000
2545000
2550000
2555000
2560000
2565000
2570000
2575000
2580000
2585000
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160000 170000 180000 190000 200000
2535000
2540000
2545000
2550000
2555000
2560000
2565000
2570000
2575000
2580000
2585000
2590000
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Thank you for your attention
and welcome to
TaiwanTaiwan
Soil Information System of Taiwan Soils and Its ApplicationsRural soils of TaiwanForest soils in TaiwanApplication of Soil Information System (SIS) in TaiwanDistribution of Zinc total contents in Taiwan (total sample no. 101,209) Soil Organic carbon StocksSOC stock (0-30 cm) of Changhua countySOC stock (30-60 cm) of the Changhua countySOC stock (0-150 cm) of the Changhua countySOC stock (0-30 cm) of the Taoyuan countySOC stock (0-30 cm) of the Tainan countySOC stock (0-150 cm) of the Tainan county