Post on 19-Apr-2019
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Pengelolaan elemen penyusun agroekosystem
L. SETYOBUDI
2010
Topik • fungsi, • hirarki (food & energy chain) • nilai ekonomi
Land based agriculture
Mewujudkan kebijakan pangan nasional menyangkut:
• terjaminnya pangan (food availability), • ketahanan pangan (food security), • akses pangan (food accessibility), • kualitas pangan (food quality) dan • keamanan pangan (food safety).
Four important properMes of Agroecosystem
• Produc3vity: – Measured either as yield or income per unit of input or resource i.e. yield/ha
• Stability: – Measured as the constancy of the producMvity
• Sustainability: – The ability of an agroecosystem to maintain producMvity in respond to environmental disturbance
• Equitability: – Expresses how evenly the products of an agroecosystem are distributed among its human beneficiaries à Prosperity
HypotheMcal evoluMon of agroecosystem Productivity Stability Sustainability Equitability
Low population traditional cultivation
Low Medium High High
High population traditional cultivation
Very low Very low Low Medium
Reforestation Low High High Low Cash cropping High Low Low Low Tree gardens and cash cropping
Medium Medium Medium Medium
Integrated tree and home gardens
High Medium High High
Diagram alir Pendekatan Agroekosistem PENENTUAN LOKASI
DATA BIO-‐FISIK, SOSIAL, EKONOMI DEMOGRAFI
PENENTUANDAN PEMETAAN KAWASAN
Analisis Erosi Tanah Analisis Kesesuaian Analisis
Pendapatan, Usaha Tani, Daya Dukung
Analisis Agroteknologi
Analisis Agroekosistem
• ProdukMvitas, Capability, Stability, Sustainability
AlternaMf pemanfaatan yang opMmal dan berwawasan lingkungan
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Subsistance farming household
Subsistance farming household developed country
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How are these ecosystems similar? How are they different? What are the components of their food
web? How do nutrients and water cycle in the system? How much is harvested by humans?
Banana in a tradiMonal home garden in a forest
area
Highland bananas
Which one of these agro-‐ecosystems has more different types of plant material produced? Which one has a more diverse food web?
Plantain intercropped with cassava and pineapple
Export banana Agroforestry banana
In which system is more sunlight captured by Musa? In which system is more biomass recycled?
Plantain with few stems and limited canopy
Vigorous plantain
The many plant and animals in an agro-‐ecosystem can be viewed as a food web.
The soil food web has many organisms feeding both on living and dead plant material. Thus, the many organisms derive energy to grow and
reproduce and eventually nutrients Bed up in plant and animal material is available again for plant growth.
What other organisms are present in an agro-‐ecosystem based on banana in your area?
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Linkage of social-‐cultural-‐economic factors influencing the land use decisions which modify agroecosystem processes.
NutriMon Indicator (N)