頁籤選單縮合
題名 | 保護管凹地直播及施肥處理對木賊葉木麻黃幼苗生長之影響=Effect of Seed Shelters, Concave Ground Seeding, and Fertilizing Schemes on the Growth of Casuarina equisetifolia Seedlings |
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作者姓名(中文) | 黃俊元; 陳朝圳; 謝漢欽; 陳芬蕙; 歐書寰; 陳建璋; | 書刊名 | 林業研究季刊 |
卷期 | 41:1 2019.03[民108.03] |
頁次 | 頁29-48 |
分類號 | 436.285 |
關鍵詞 | 木賊葉木麻黃; 凹地; 直播造林; 施肥; 海岸林; Casuarina equisetifolia; Concave ground; Direct seeding; Fertilization; Coastal forest; |
語文 | 中文(Chinese) |
中文摘要 | 木麻黃林分在臺灣海岸地區長期遭受環境逆境危害,造成林分劣化產生孔隙,影響海岸林保安功能。雖然木賊葉木麻黃具有天然更新之障礙,但仍有少量天然更新幼苗發生。本研究試驗以保護管凹地直播及施肥處理探討木賊葉木麻黃更新造林的可行性。試驗結果發現在臺東海岸具有消波塊屏障,且地被覆蓋率<10%的林分孔隙,使用此直播系統可達成造林目標。直播3年後,施肥組的建立率為58±5%,地徑3.7±0.5 cm,樹高291±15 cm,以及樹冠幅155±14 cm。施肥可促進幼苗之初期生長,對當年生樹苗的存活率有助益。然而,直播造林30個月後,有、無施肥之樹苗形體生長即無顯著差異。幼苗生長的微環境因保護管的屏障,可降低白天的高溫,且土壤水分可能因蒸發量較低,使管內底部可用水分較多,提供有利幼苗生長的環境,因此樹苗可順利成長。藉由此法可成功培育木賊葉木麻黃幼苗及提高存活率,提供臺東海岸地區直播造林作業之參考。 |
英文摘要 | Casuarina stands often suffer from stresses in coastal areas of Taiwan. These degraded stands and gaps impact the protection functions of coastal forests. Although Casuarina equisetifolia has difficulty to regenerate naturally, still some natural seedlings can be established. The purpose of this study is to explore the feasibility of C. equisetifolia regeneration afforestation by using direct seeding with seed shelters on concave ground and fertilization. The results showed that the afforestation target can be achieved by direct seeding in gaps of coastal forests in Taitung, where vegetation coverage were under 10% with the protection of arm blocks. After 3 years of direct seeding, the percentage of seedling establishment with fertilization treatment was 58±5%, average basal stem diameter was 3.7±0.5 cm, tree height was 291±15 cm and canopy diameter was 155±14 cm. Fertilization effectively promoted the initial growth of the seedlings, and in turn increased the seedling survivorship during the first year after sowing. However, there was no significant difference in growth between with or without fertilization after 30 months of direct seeding. Heat and the evaporation rate at the seedling microenvironment during daytime were lower with the protection of seed shelters. Soil moisture at the bottom of seed shelters offered a favorable environment for seedlings growth. As the establishment and survivorship of C. equisetifolia seedlings were improved, the method in this study can be applied to afforestation of coastal forests on the coast of Taitung. |
本系統之摘要資訊系依該期刊論文摘要之資訊為主。