Stimulating Natural Regeneration of Tropical Forest on Degraded Land: Approaches, Outcomes, and Information Gaps

摘要: Extensive land clearing in many parts of the global tropics is a major threat to biodiversity, and strategies are urgently needed reinstate forest. Tree planting commonly used strategy rapidly restore forest degraded landscapes. However, tree expensive, most cases financial constraints prevent its use at scale address ongoing legacy clearing. Here, we conduct quantitative review literature from evaluate outcomes less intensive interventions (i.e. non-planting) aimed stimulating natural regeneration We focus specifically on overcoming barriers native plant that predominate earliest stages succession. Common include varied suppress herbaceous vegetation (e.g. cutting or herbicide treatment), measures bolster propagule supply direct seeding artificial bird perches). There was an apparent trend among pair-wise comparisons effect sizes suggest combined simultaneously increase resulted consistent terms promoting progress toward restoring structure. Despite obvious demand for lower cost interventions, paucity information means it still premature generalize specific their overall relative active planting. Nevertheless, report research effort this area, promising directions accelerate will improve capacity select optimal, effective achieve long-term restoration objectives with particular level certainty.