Effect of Forest Gaps on Leaf Morphological and Photosynthetic Characteristics of Main Species in Abies georgei var.smithi Forest
We chose three shrub species and Abies georgei var.smithi saplings to study the effect of three typical forest gaps on leaf morphological and photosynthetic characteristics of main species in A.georgei var.smithi forest.The different size of forest gaps has no effect on leaf morphology of Lonicera inconspicua, but Pn max and Rd increased by 75%and 186%, re-spectively.Chlorophyll relative content, specific leaf weight and Pn max of Rosa omeiensis and R.aganniphum var.schizo-peplum increased from small gap to big one, with Rd reducing by 138%.Otherwise, there is an opposite trendy of Rhodo-dendron aganniphum var.schizopeplum with the same index of R.omeiensis.Big gap shows a positive effect on increasing chlorophyll relative content, specific leaf weight and Rd, although its Pn max reduces.Therefore, the size of forest gap has no significant effect on L.inconspicua.R.omeiensis and R.aganniphum var.schizopeplum grow better in the bigger size of forest gaps, and the small ones are suitable for A.georgei var.smithi survival.
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