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題名 | 南仁山森林生態系植生綠度之季節性變化=Seasonal Variation of Vegetation Greenness of Nanjenshan Forest Ecosystem |
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作 者 | 陳朝圳; | 書刊名 | 中華林學季刊 |
卷期 | 32:1=124 1999.03[民88.03] |
頁次 | 頁53-66 |
分類號 | 436.12 |
關鍵詞 | 常態化差異植生指標; 長期生態研究; SPOT多期影像; Normalized difference vegetation index; LTER; SPOT multi-temporal image; |
語文 | 中文(Chinese) |
中文摘要 | 衛星遙測技術可提供同一地點之多期、多光譜資料,因此對於大面積森林生長狀 況之變化可有效的掌握,其在生態環境監測及生態功能推測上,可配合其他地面樣區調查資 料,建立生態屬性之空間變化模式。本研究利用1996年3月、6月及1997年9月及12月, 四個不同生長季節之南仁山地區SPOT XS衛星影像,進行各期影像之常態化差異植生綠度 分析。探討東北季風對南仁山森林生態系植生綠度之影響。由研究結果得知,向風坡與背風 坡植生皆以6-9月份生長勢最高,其中向風坡平均值生綠度值約為0.441,背風坡約為0.438, 其間差異不顯著;而12月份至隔年3月份向風坡之平均值生綠度值約為0.241,背風坡為 0.352,其間差異極顯著,顯示南仁山森林生態系植生之生長勢明顯受到東北季風影響。 |
英文摘要 | The digital remote sensing image, providing information both multi-temporal and multi- band, can be effectively used to monitor forest development on a large scale. Combining with other information collected from ground survey, it can also be used to develop the spatial model of ecosystem, and can be further used in environment monitoring and ecosystem's function estimation. The purpose of this research was to study the effect of northeastern monsoon on the vegetation greenness of Nanjenshan Forest Ecosystem. We applied normalized difference vegetation index (NDVI) to detect seasonal variation in vegetation greenness with four SPOT XS images, which were gathered at different times-Mar. 1996 and Jun. 1996, Sept. 1997 and Dec. 1997. I found leeward and windward habitat had the highest degree of vegetation greenness from Jun. To Sept. The difference between winward (0.441) and leeward (0.438) was not significant. However, the difference between windward (0.241) and leewaed (0.352) from Dec. to Mar. was significant. The results indicate that the northeastern monsoon would decrease vegetation greenness. |
本系統之摘要資訊系依該期刊論文摘要之資訊為主。