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| 題 名 | 應用空間資訊於林地生態地位評估--以惠蓀林場為例=Application of Spatial Information to Evaluate Ecological Site Quality--A Case Study of Huisun Forest Experimental Station |
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| 作 者 | 馮豐隆; 吳昶清; | 書刊名 | 中華林學季刊 |
| 卷 期 | 36:2=131 2003.06[民92.06] |
| 頁 次 | 頁175-185 |
| 分類號 | 436.7 |
| 關鍵詞 | 地理資訊系統; 生育地因子; 地位; 空間推估; GIS; Habitat evaluation; Site quality; Spatial interpolation; |
| 語 文 | 中文(Chinese) |
| 中文摘要 | 適地適木是森林生態系經營很重要的生物生態原則。適地適木可以透過林木對生育地環境的反應來評估,樹種適生的環境狀況,可謂之為生態地位(SQi)。這些反應包括:林木對光之反應函數f□(TF)、土壤乾旱之反應函數(WiF)、土壤溼度反應函數(WeFi)以及木壤含氮量反應函數f□(NF)。本研究應用地理資訊系統的空間推估及空間分析法,針對臺灣陸域以40mx40m網路進行影響林木適生的生育地因子的點推面空間推估。這些因子包括:相對日照量、溫度、雨量、潛能蒸發散量、地下水位以及土壤含氮量,除了陽性樹種相對日照量指標為介於0~1.52外;其他因素皆標準化於0~1的環境品質指標。另一方面收集整理各評估樹種(i)對立地品質上環境生長適存的情形,擷取研究範圍,進行生育地生態地位評估:SQi=□(AL)×□(TF)×□(WiF)×□(WeF)×□(NF)來評估i樹種的生摯地位指標。本研究評估之樹種以主要造林樹種紅檜、臺灣杉及相思樹為例,評估研究範圍以惠蓀林場為例,最後更以惠蓀林場實際林型分布來加以驗證。 應用生育地因子評估樹種之生態地位,能解決統計實證方法在空間異質性使用的限制,並同時評估多種樹種,因此可應用在造林樹種之選擇,亦可應用於崩塌地復育造林樹種之選擇,以及林相改良造林樹種之選擇,在收集更多樹種屬性與空間分布資料後,配合此評估方法,未來更可模擬出臺灣林林之動態,以及評估環境變遷對臺灣森林所造成的影響。 |
| 英文摘要 | To plant a right tree in a right place is very important in forest ecosystem management. How the plant a right tree in a right place could be analyzed from the ecological site quality (ESQ) of forest, with environmental factors (climate and soil factors) in spatial modeling. Those environment factors are light f□(AL), temperature responded function f□(TF) of climate, dry tolerance f□ (WiF), wet fi(WeF) and N contents f□(NF) responded function of soil in the paper. Spatial interpolation method and spatial analysis were used to estimate the climate and environment factors of Taiwan in 40m×40m grids. These factors of relative light radiation, temperature, precipitation, ground water level, potential evapotranspiration and available N contents in soil were normalized in the scale of 0~1, except the shade intolerance tree species. The model Qi=f□(AL)×f□(TF)f□(Wif)×f□(WeF)×f□(NF), were used to evaluate site quality of forest. The model could be used to evaluate the site quality of each interested species with their characteristics respond to habitat. Chamecyparis frmosenisis, Taiwania Cryptomerioides and Acacica Confusa were chosen as examples in the SQ evaluation of plantation center area afforestation area. Finally, the actual distribution nature of forest type the in Huisun forest experimental station interested species were validates. Most of them were located in the high SQ areas. Applying site factors to evaluate site quality, we could evaluate site quality of many tree species at the same time and solve the spatial heterogeneity which empirical method could not achieve. Therefore, the assessment method could be applied in the selection of species for afforestation or species selection in the forest restoration areas. From collecting the attributes of planting species, spatial distribution data and environmental factors, we could integrate and analyze the data for further simulating the forest dynamics of forest in Taiwan. The impact of global change on forest also could be evaluated. |
本系統中英文摘要資訊取自各篇刊載內容。