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Alvin SokolowUCCE, UC Davis
The System Simplified
• Farmer Decision– Maximize profit through land use and
management decisions
• Processing Center Decision– Maximize profit through efficient use of plant
assets• Tomatoes – Source up and down Valley to run
plant 24/7 through harvest
Available Economic Data
• County level information– Ag Commissioner Reports– Census of Ag– CDFA Commodity Reports
• National and international data widely available
• We know how much is planted in each county…but
No Idea Where
• Very little parcel level GIS data available– DWR
• Not frequently updated
– PUR• Only as good as what the producer reports• Not all Ag Commissioner offices treat GIS as
important
• Location is important to agricultural production
Land Use is Local, Economics are Not
• Can regional economic systems be linked to local agricultural production?
• Do local production patterns reflect regional economic and local urbanization pressures?
• What role does agricultural zoning play in determining local agricultural production? – Economic Competitiveness?
Current Solano County Research
• Micro-level GIS– 7,300 rural land use
parcels– 79% of parcel
production known– Rural residences– Urban areas– County zoning– Marketing and
processing centers
Research Objective
• Quantify correlations between – commodity parcels– rural residences– urban areas– economic system
• Agricultural landscape is heterogeneous– What can we learn from this heterogeneity?
Heritage Land Habitat
• No Plant/Market – No Production
• No Production – No Plant/Market
• Urbanization - Local force with regional impact
If we are going to save Heritage Lands, we need to know where they are and what is
going on around them.
Solano Agricultural Futures Project
• 20 month project• General Plan Update Process• Understand Agricultural Production in Solano
County
1980 2006
1 SUGAR BEETS $ 48,200,000 NURSERY PRODUCTS MISC. $ 40,900,000
2 TOMATOES PROCESSING $ 43,400,000 CATTLE & CALVES $ 21,500,000
3 WHEAT $ 41,500,000 HAY ALFALFA $ 19,900,000
4 CORN $ 28,900,000 TOMATOES PROCESSING $ 17,800,000
5 CATTLE & CALVES $ 19,100,000 WALNUTS ENGLISH $ 15,500,000
6 HAY ALFALFA $ 16,500,000 VEGETABLES $ 15,000,000
7 BEANS DRY EDIBLE UNSPEC. $ 14,200,000 FLUID MILK $ 8,946,271
8 NURSERY PRODUCTS MISC. $ 10,500,000 GRAPES WINE $ 7,945,161
9 PEARS $ 9,906,583 LIVESTOCK $ 5,597,677
10 SHEEP LAMBS $ 9,844,932 SUNFLOWER SEED PLANTING $ 4,759,888
Grand Total $ 320,858,209 Grand Total $ 199,497,072
Solano County
• Total Number of Acres: 359,892
• Total Value of Production: $ 243,162,931
• Value per Acre of Production: $ 675.65
• Median Ag Parcel Size: 38.44 acres
• Median Rural Resident Parcel: 4.8 acres
Value per Acre of Production
$-
$500.00
$1,000.00
$1,500.00
$2,000.00
$2,500.00
Dixon
Ridge
Elmira
Maine
Prairie
Jeps
on P
rairie
Mon
tezu
ma
Hills
Pleasa
nts V
aca La
goon
Vall
eys
Ryer I
sland
Suisun V
alley
Gre
en V
alley
Weste
rn H
ills
Wint
ers
Agricultural Regions
Val
ue
Per
Acr
e
Local Production Drivers
• Different Spatial Scales– Local Producer Land
Use Decision– Regional Economic
Forces– County Planning and
Zoning– Neighborhood Forces
