Abstract

Evaluating of Drought Tolerance of Four Afforestation Species

Highlights

  • Among forest species, it was not known which species are suitable for afforestation due to the difficulty of selection

  • Days of resistance to drought of stem (DRDS) and days of resistance to drought of leaf (DRDL), relative water loss (RWL) and Relative water content (RWC) measurement method is good for using drought stress measurement method

  • The DRDL of F. rhynchophylla and J. regia were 18 days and 14 days, respectively. These results implied that Q. acutissima and C. obtuse are more tolerant against drouth stress than F. rhynchophylla and J. regia

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Summary

Introduction

Among forest species, it was not known which species are suitable for afforestation due to the difficulty of selection. In order to make sure the strategy, test plantings have been carried out for various species to monitor their growth feature at the afforest site. The prospective afforestation species are determined in consideration of the location conditions (environment, soil and meteorological factors) of the stands [1,2]. These test planting is often on the risk of adaptation failure at the test site due to unexpected climate event because these are time-consuming works. The measurement and selection of drought-tolerant species and/or varieties relied on data obtained from field trials, which are difficult to obtain accurate data because there are many unpredictable factors such as soil moisture and physiological conditions. Four afforestation species were done to accurately assess drought resistance based on physiological and biochemical indicators

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