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| DC 欄位 | 值 | 語言 |
|---|---|---|
| dc.contributor.author | Chia-Hao Chang | en |
| dc.contributor.author | 張家豪 | zh_TW |
| dc.date.accessioned | 2021-07-01T08:12:12Z | - |
| dc.date.available | 2021-07-01T08:12:12Z | - |
| dc.date.issued | 2001 | |
| dc.identifier.citation | 李淑貞．1999．南仁山六種樹苗在二種海拔高林隙及林下環境的生理及生長反應．國立屏東科技大學熱帶農業研究所碩士論文． 沈明來．1998．實用多變數分析．九州圖書文物有限公司 林琦珍．1998．南仁山低地雨林樹冠層葉片結構之研究．國立臺灣大學植物科學研究所碩士論文． 崔君至．2000．南仁山區土壤性質在不同地形位置．國立臺灣大學農業化學研究所碩士論文． 張正平．1998．南仁山低地雨林凋落物之研究．國立臺灣大學植物科學研究所碩士論文． 陳毓昀．1998．南仁山低地雨林凋落物分解之研究．國立臺灣大學植物科學研究所碩士論文． 廖啟政．1995．南仁山亞熱帶雨林海拔梯度與植被組成、結構、歧異度及分佈類型的關係．國立臺灣大學植物科學研究所碩士論文． 賴宜鈴．1996．南仁山亞熱帶雨林小苗動態及地被植物組成之研究．國立臺灣大學植物科學研究所碩士論文． 蘇夢淮．1993．南仁山亞熱帶雨林樹冠層葉片結構之研究．國立臺灣大學植物科學研究所碩士論文． 蘇鴻傑．1984．臺灣天然林氣候與植群型之研究（二）山地植群帶與溫度梯度之關係．中華林學季刊．17(4):57-73。 Attiwill P M and Adams M A. 1993. Tansley review No. 50: Nutrient cycling in forest. New Phytol. 124:561-582. Binkley D and Matson P. 1983. Ion exchange resin bag method for assessing forest soil nitrogen availability. Soil Sci. Soc. Am. J. 47: 1050-1052. Binkley D, Aber J, Pastor J and Nadelhoffer K. 1986. Nitrogen availability in some Wisconsin forests: Comparisons of resin bags and on-site incubations. Biol. Fert. Soils 2: 77-82. Binkley D, and Hart S C. 1989. 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| dc.identifier.uri | http://tdr.lib.ntu.edu.tw/jspui/handle/123456789/75203 | - |
| dc.description.abstract | 本研究之進行地點位於墾丁國家公園南仁山保護區。前人的樣區調查發現，南仁山山頂與溪穀兩地植物社會在樹種組成上有很大的差異。凋落物分解袋（litter bag）、土壤埋藏袋（buried bag）及離子交換樹脂袋（ion exchange resin bag）這三種實驗技術分別可以監測凋落物養分釋出速率、土壤礦化作用（mineralization）速率、及土壤中養分提供速率（nutrient supply rate）這三個森林生態系中養份循環之重要步驟。目前普遍認為氮和磷是森林發育的重要限制因數，本研究即以上述方法來探討南仁山山頂與溪谷兩森林的有效性養分有何差異。 分解袋實驗中，溪穀與山頂的葉片凋落物交叉置於溪穀及山頂。結果以溪穀葉片凋落物在溪穀分解速率最快，半衰期為131天，山頂葉片凋落物在山頂的分解速率最慢，半衰期為185天。凋落物養分釋出速率與試驗地特性及凋落物特性皆有相關。容易因淋洗作用而釋出的鉀，在淋洗作用旺盛的山頂釋出速率亦較快；置於溪穀的葉片凋落物，氮釋出速率較快；溪穀葉片凋落物的鉀、鎂、磷釋出速率比山頂葉片凋落物快；葉片凋落物的鈣、鎂、磷釋出速率在其各自的生育地較快。由於山頂土壤有機質含量較高，平均土壤礦化作用速率比溪穀快。2000年1?4月的實驗中，山頂溪穀的無機氮、無機磷、鈣、鎂淋洗速率皆較其他時間的實驗為慢，應與雨量有關；山頂的土壤無機氮、無機磷、鈣、鎂提供速率皆比溪穀慢。凋落物養分年輸入量中，無機氮在山頂溪穀差異很小，都是約60kg ha-1 yr-1，其他養分差異較大，相差一?三倍。在土壤養分提供速率部分，山頂溪穀差距與凋落物養分年輸入量類似，無機氮在山頂與溪穀的差異也很小（23、26kg ha-1 yr-1）。山頂溪穀無機氮的流動速率差異不大，可能其他養分對植被限制影響比較大。 | zh_TW |
| dc.description.abstract | Nutrient availability was studied in a lowland rain. forest on Nanjenshan Long Term Ecological Research Site in southern Taiwan. From detailed vegetation surveys, we know that the plant communities between footslope and summit on Nanjenshan are different in species composition. By using litter-bag, buried-bag, and ion-exchange-resin-bag technique, we can determine the rates of three important steps of nutrient cycling in forest ecosystem: nutrient releasing rates of litters, soil mineralization rate, and soil nutrient supply rate. The results showed that the decomposition rates were different between leaf litters collected from footslope and summit, and it also different between litters put on footslope and summit. Their decomposition half-life ranged from 131 to 185 days. Leaf litters collected from footslope showed greater decomposition rate than from summit, and litters put on footslope had greater decomposition rate than on summit. Nutrient releasing rates were different in site characters and in litter quality. Potassium had fastest releasing rate, and it reached a low remaining percentage earlier on summit than on footslope. Nitrogen releasing rate was faster on footslope than on summit. Leaf litters collected from footslope had greater releasing rates of potassium, magnesium, and phosphorus than those collected from summit. Leaf litters collected from both sites had faster releasing rates of calcium, magnesium, and phosphorus on their own sites. Soil mineralization was faster on summit than on footslope. Nitrogen input by leaf litter per year was about 60 kg yr-1 ha-1 on both sites. But other nutrient elements had great difference between the two sites. Soil nitrogen supply rates per year had similar trend of leaf litter input, and the difference between two sites (23, 26 kg yr-1 ha-1) was small, too. The rate of nitrogen flux showed no obvious difference as other nutrient elements, so maybe nitrogen is not the limiting element in making the two plant communities different. | en |
| dc.description.provenance | Made available in DSpace on 2021-07-01T08:12:12Z (GMT). No. of bitstreams: 0 Previous issue date: 2001 | en |
| dc.description.tableofcontents | 中文摘要……………………………………………………………Ⅰ 英文摘要……………………………………………………………Ⅱ 附表目次……………………………………………………………Ⅵ 附圖目次……………………………………………………………Ⅶ 前言……………………………………………………………………1 1．植物與養分的關係：養分有效性………………………………1 2．分解作用…………………………………………………………2 3．南仁山相關研究…………………………………………………4 4．研究目的…………………………………………………………5 研究區域概述…………………………………………………………6 1．地理位置…………………………………………………………6 2．氣候………………………………………………………………6 3．植生………………………………………………………………7 實驗方法……………………………………………………………13 一．實驗原理………………………………………………………13 二．凋落物分解袋實驗……………………………………………14 三．離子交換樹脂袋實驗…………………………………………16 四．土壤埋藏袋實驗………………………………………………17 五．資料分析………………………………………………………18 結果…………………………………………………………………21 一、分解袋實驗……………………………………………………21 1．葉片凋落物化學成分分析………………………………………21 2．分解曲線…………………………………………………………21 3．養分釋出…………………………………………………………24 4．凋落物養分濃度變化……………………………………………30 5．葉片分解與元素釋出……………………………………………30 6．分解速率與養分釋出速率之比較………………………………36 二、土壤埋藏袋實驗………………………………………………38 1．土壤礦化作用速率………………………………………………38 2．土壤養分含量……………………………………………………41 三、離子交換樹脂袋實驗…………………………………………45 1．時間變化…………………………………………………………45 2．試驗地差異………………………………………………………45 四、全年養分流動總量……………………………………………48 討論…………………………………………………………………50 1．葉片凋落物分解速率與養分釋出速率…………………………50 2．凋落物與鮮葉養分含量之比較…………………………………51 3．土壤礦化作用速率………………………………………………52 4．土壤養分提供速率………………………………………………53 5．全年養分流動總量………………………………………………53 6．土壤養分含量……………………………………………………54 7．離子交換樹脂袋技術……………………………………………54 8．東北季風對南仁山森林影響模式假說…………………………56 結論…………………………………………………………………58 參考文獻……………………………………………………………59 | |
| dc.language.iso | zh-TW | |
| dc.title | 南仁山低地雨林凋落物分解及有效性養分之研究 | zh_TW |
| dc.title | Litter Decomposition and Nutrient Availability in a Lowland Rain Forest of Nanjenshan | en |
| dc.date.schoolyear | 89-2 | |
| dc.description.degree | 碩士 | |
| dc.relation.page | 63 | |
| dc.rights.note | 未授權 | |
| dc.contributor.author-dept | 生命科學院 | zh_TW |
| dc.contributor.author-dept | 植物科學研究所 | zh_TW |
| 顯示於系所單位： | 植物科學研究所 | |
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