UGC NET Agroforestry & Trees on Farms for Sustainability: practice questions

1 · Shelterbelts, windbreaks and boundary plantations · hard

Africa's Great Green Wall initiative has increasingly emphasised:

1. A continuous belt of planted exotic trees across Africa
2. Mosaics of land use and farmer-managed regeneration
3. Removal of all trees from Sahelian farms
4. Irrigated plantations of a single species

2 · Carbon storage in agroforestry · easy

To convert a mass of carbon to carbon dioxide, multiply by:

1. 12/44
2. 32/12
3. 44/12
4. 16/12

3 · Carbon storage in agroforestry · hard

Carbon sequestration in an agroforestry system is described as time-limited because:

1. Stocks level off as trees mature or are harvested
2. Trees stop photosynthesis entirely after their first year
3. Soil carbon always falls steadily under any tree cover
4. Carbon in wood converts to methane within a decade

4 · Agroforestry for livelihoods and markets · easy

Shea butter, an important income source for women in the Sahel, comes from parkland trees of:

1. Parkia biglobosa
2. Adansonia digitata
3. Faidherbia albida
4. Vitellaria paradoxa

5 · Agroforestry for livelihoods and markets · medium

Farmer-managed natural regeneration, which spread widely in Niger from the 1980s, involves:

1. Protecting and pruning regrowing native stumps
2. Planting exotic eucalyptus in dense, even-aged blocks
3. Clearing all trees to expand millet and sorghum fields
4. Importing tree seedlings from overseas nurseries

6 · Policy and tenure barriers to trees on farms · medium

Kenya's Farm Forestry Rules of 2009 set a target of tree cover on agricultural land of at least:

1. 1%
2. 33%
3. 10%
4. 50%

7 · Policy and tenure barriers to trees on farms · hard

Tenants without secure tenure are unlikely to plant trees mainly because:

1. Tenants are barred from planting any crops at all
2. Trees take years to pay back the investment
3. Trees always lower the rental value of farmland
4. Tenants receive higher prices for timber than owners