Download
1 / 7
70 likes | 186 Vues
This study explores the impact of land-use changes, specifically deforestation and afforestation, on species richness and diversity across different habitat types, including young forests, shrub-grasslands, and ploughed fields. Utilizing metrics such as Chao1, Simpson diversity, and trapping probabilities for various species, the research aims to classify habitats, analyze ecological gradients, and assess conservation strategies. The results highlight significant shifts in species composition and diversity as a function of habitat alteration, emphasizing the importance of targeted afforestation efforts.
E N D
LiuPan mountains Figure 1
Figure 2 20 15 10 Species Sobs 5 Michaelis-Menten Chao1 Jackknife2 0 0 20 40 60 80 100 Samples
Figure 3 Afforestation gradient Deforestation gradient Afforested set-aside fields Woody shrub Non-woody shrub Tall grassland Ploughed fields Afforested grassland Young forest A priori habitat classification Forest dAIC=-19.3 Step 1 Shrub - grassland Merging procedure dAIC=-15.8 Step 2 Forest - Woody shrub dAIC=-12.5 Step 3 Young forest -afforested grassl. Afforested set-aside fields A posterior habitat classification Ploughed fields Young forest -afforested grassl. Forest - woody shrub Shrub - grassland
Figure 4 Forest - woody shrub (*) Shrub - grassland (*) Trapping probability Trapping probability Tstr Tstr Crlo Crlo Disa Nico Spld Disa Nico Spld Socy Socy Eose Eose Eosp Apag Appe Apag Appe Eosp Ocda Ochu Ocda Ochu Mumu Mumu Species Species Ploughed fields Afforested set-aside fields Trapping probability Trapping probability Tstr Tstr Crlo Crlo Disa Nico Disa Nico Spld Spld Socy Socy Eose Eose Apag Appe Eosp Apag Appe Eosp Ocda Ochu Ocda Ochu Mumu Mumu Species Species Young forest - afforested grassland (*) Trapping probability Tstr Crlo Spld Disa Nico Socy Eose Apag Appe Ocda Ochu Eosp Mumu Species
Figure 5 a. Species density 6 5 4 Species 3 2 Forest-woody shrub a, b Shrub-grassland b Ploughed fields a, b 1 Young forest-afforested grassl. a, b Set-aside fields a 0 0 5 10 15 20 25 30 Samples b. Species richness 6 5 4 Species 3 2 Forest-woody shrub a, b Shrub-grassland b Ploughed fields a, b 1 Young forest-afforested grassl. a, b Set-aside fields a 0 0 20 40 60 Individuals
Figure 6 Alpha diversity (Simpson) 6 5 4 3 Simpson diversity 2 Forest-woody shrub 1 Shrub-grassland Ploughed fields Young forest-afforested grassl. Set-aside fields 0 0 5 10 15 20 25 30 Samples
Figure 7 0.8 0.6 Forest-woody shrub Chao-Jaccard distance 0.4 0.2 Shrub-grassland 0.0 Ploughed Young forest-afforested grassl. Set-aside fields
