This study examined carbon stock, tree diversity, and soil organic carbon in dry zone homegardens in Sri Lanka. The researchers found that (1) above-ground biomass carbon stocks varied widely between homegardens but were generally lower than forest carbon stocks, (2) soil organic carbon levels were higher in homegardens than adjacent agricultural lands, and (3) small homegardens had higher tree diversity and carbon stocks per unit area than medium or large homegardens. The implications are that improving water access and soil fertility in homegardens could boost carbon storage, crop diversity, and food security while also providing benefits for climate change mitigation.
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