Mapping Agroforestry and Trees outside forest
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R Rizvi, A. K. Handa, K. B. Sridhar, Anil Kumar Choudhary, S. Bhaskar, S K Chaudhari, A. Arunachalam, Noyal Thomas, S. Ashutosh, R. K. Sapra, Girish Pujar, Raj Kumar Singh, Sunil Londhe, Devashree Nayak, Atul Dogra, Rajendra Choudhary, S. K. Dhyani, Javed Rizvi, Tor-Gunnar Vagen, M. Ahmad, R. Prabhu, Chandrashekhar Biradar, Gaurav Dongre. (5/6/2020). Mapping Agroforestry and Trees outside forest. Kenya: World Agroforestry Center (ICRAF).
Abstract
Mapping the Extents of Agroforestry using Geo-informatics
Agroforestry is a collective name for land-use systems and practices in which
woody perennials are deliberately integrated with crops and/or animals on the
same land-management unit. The integration can be either in a spatial mixture
or in a temporal sequence. There are normally both ecological and economic
interactions between the woody and non-woody components in agroforestry. In
recent years, there has been a shift in the focus of agroforestry research from the
plot or field scale to the landscape scale, which has uncovered the multiple benefits
that trees provide in agricultural landscapes. But the spatial distribution and extent
of agroforestry was not well understood earlier due to the complexity involved in
accurately mapping agroforestry and Trees Outside Forest (TOF) in mixed tree/crop/
livestock systems. As per ISFR 2019, all trees growing outside recorded forest areas
irrespective of patch size are referred as Trees Outside Forest.
A major problem in estimating the area under agroforestry is the lack of procedures
for delineating the area influenced by trees in a mixed stand of trees and crops.
Besides, simultaneous agroforestry where the tree and the crop components
grow at the same time and in close enough proximity for interactions to occur
is more complex. As in simultaneous systems, the entire area occupied by multistrata
systems such as home gardens, shaded perennial systems and intensive treeintercropping
situations can be listed as agroforestry. The problem is more difficult
in the case of practices such as windbreaks and boundary planting where trees are
planted at a wide distance between rows (windbreak) or around agricultural fields
(boundary planting). In such cases, the influence of trees extends over a larger
area than is easily perceivable. In addition, there is a general lack of systematically
collected ground reference information for the development of predictive models
for the extent of agroforestry area, as well as for the validation of these estimates.
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Biradar, Chandrashekhar https://orcid.org/0000-0002-9532-9452