| Summary: | 碩士 === 國立嘉義大學 === 森林暨自然資源學系研究所 === 101 === In this study, four caostal afforesation sepecies as Casuarina equisetifolia, Avicennia marina, Lumnitzera racemosa, and Excoecaria agallocha were selected to carry out brine pan soil remediation and forestation test by menas of ditching embankment, including four different salt-separation underlying treatments and soil improvement methods for planting suitability test.
From the results of overall soil improvement and adaptability test, the best way for brine pan soil remediation is oyster shell underlying treatemt; as for soil improvements, use of organic fertilizer for the original soil disturbance shows better effect than other treatments. Finally, for the survival rate, the highest is Lumnitzera racemosa with survival rate 98.0%, and then are Avicennia marina of 97.0 %, Casuarina equisetifolia of 79.0 %, and Lumnitzera racemosa of 78.0 % in sequence. The Single-factor analysis of variance was carried out against the new growth of all species observed, for the part of soil improvement, except non-significant differences in basal diameter, there are significant differences in tree height and crown area; the basal diameter for the underlying treatment, tree height and crown area show significant difference.
Due to special circumstances of brine pan habitat, from pre-planting habitat improvement, species selection, to subsequent planitng and tending are more difficult than general reforestation. With continous release of abandoned saline land, it is realtively important to establish technical systems in response to silviculture. The results of this test are for species breeding and remediation in brine pan afforestation referecne.
|
|---|
