Surveying of the Effect of Sambar on the Recruitment and Structure of Forests in the Areas of Jyunda and Guangao in the Yushan National Park
中文摘要
郡大及觀高地區位於玉山國家公園西北部，近年的調查顯示本區森林受到水鹿啃食嫩葉或樹皮的現象有擴大的趨勢。本計畫目的在利用沿線調查法、穿越線調查法及樣區調查法勘查郡大、觀高地區台灣水鹿族群現況，及水鹿對於本區塊森林植群的影響程度，並提出未來的研究方向建議。
本研究共建置完成5個永久森林監測樣區，並記錄28科72種的樹木遭台灣水鹿啃食樹皮或磨角，並以台灣鐵杉、台灣赤楊、台灣雲杉、褐毛柳、紅檜、台灣華山松等受損較為嚴重。台灣水鹿的傷害已經擴及中海拔區域，造成許多紅檜成樹被水鹿啃食環剝死亡。
截至目前為止，在玉山國家公園境內遭台灣水鹿啃食樹皮的樹種已經有41科139種。本研究建議拉庫音溪溪源、楠梓仙溪林道及塔塔加地區做為後續監測研究的地點。同時，可以以塔塔加及楠梓仙溪監測樣區做為民眾教育解說宣導的場所，尋求更多的社會支持。
英文摘要
Jyunda and Guangao are located at northwest corner of the Yushan National Park. Surveys in recent years show that debarking and antler rubbing on trees by sambar is expanding in distribution. This project aims to reveal population status of sambar deer and its impact on plant communities via trail-side, transact and random plot surveys in Jyunda and Guangao, as well as to provide suggestions for future research. This project established 5 permanent monitoring areas and recorded 72 species in 28 families of trees debarked or antler-rubbed by sambar. Among them, Tsuga chinensis var. formosana, Alnus formosana, Picea morrisonicola, Salix fulvopubescens, Chamaecyparis formosensis, and Pinus armandii var. masteriana suffered more than other species. Damages by sambar has expanded to mid-altitude and made Chamaecyparis formosensis die from girdling. There have been 139 species in 41 families of trees debarked by sambar in the Yushan National Park. This project suggests Lakuin river head, Nanzixian river forestry road, and Tataka for future monitoring of sambar. Public education can also be conducted at Nanzixian river forestry road and Tataka for social support for the management of sambar population.
