http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
人工酸性雨가 소나무와 잣나무幼苗의 葉綠素 含量에 미치는 影響
李敦求,金甲泰,辛俊煥,주광영 서울大學校 農科大學 1984 서울대농학연구지 Vol.9 No.2
The study was made to examine the effects of artificial acid rain on needle chlorophyll contents of Pinus densiflora and Pinus koraiensis seedlings. Three-year-old seedlings of P. densiflora and P. koraiensis were transplanted into plastic pots filling with mixed soil (perlite : vermiculite : sand 1 : 1 : 1 v/v) in early-October, 1983, and grown in a vinyl-house at the Forestry nursery in Suweon. Seedlings were treated every three days with 20ml of artificial acid water containing pH values of 2.0 and 4.0 from Feburary 10 to March 24, 1984. As control, 20ml of tap water was also treated at the same time. Needle chlorophyll contents of the two species decreased with increasing acidities. Needle chlorophyll contents of the control plants did not change. The ratios of chlorophyll a to chlorophyll b in both species decreased gradually with increasing acidities.
人工酸性雨가 소나무와 잣나무幼苗의 葉綠素 含量에 미치는 影響
金甲泰,주광영,李敦求,辛俊煥 서울大學校農業生命科學大學附屬樹木園 1984 서울大學校 樹木園 硏究報告 Vol.- No.5
The study was made to examine the effects of artificial acid rain on needle chlorophyll contents of Pinus densiflora and Pinus koraiensis seedlings. Three-year-old seedlings of P. densiflora and P. koraiensis were transplanted into plastic pots filling with mixed soil (perlite : vermiculite : sand 1:1:1 v/v) in early-October, 1983, and grown in a vinyl-house at the Forestry nursery in Suweon. Seedlings were treated every three days with 20ml of artificial acid water containing pH values of 2.0 and 4.0 from Feburary 10 to March 24, 1984. As control, 20ml of tap water was also treated at the same time. Needle chlorophyll contents of the two species decreased with increasing acidities. Needle chlorophyll contents of the control plants did not change. The ratios of chlorophyll a to chlorophyll b in both species decreased gradually with increasing acidities.
金甲泰,주광영,曺炅眞,李敦求,李慶學 서울大學校農業生命科學大學附屬樹木園 1985 서울大學校 樹木園 硏究報告 Vol.- No.6
植物體는 生存 또는 生長을 위해 光合成作用을 하며, 綠色植物은 이를 위한 色素로서 葉綠素를 가지고 있다. 따라서 이의 含量은 生長能力이나 各種 stress에 對한 生理的 活性變化를 나타내는 指標로 이용되는 데 이에 對한 硏究報告는 基礎的 資料로서의 重要性에도 불구하고 林木 특히 소나무類에 있어서는 극히 드물었다. 이에 서울大學校 農科大學 構內에 있는 소나무類 5樹種에 대한 針葉單位生重量當 葉綠素含量을 月別測定한 結果 樹種間의 含量差異는 뚜렷하지 않았으나 測定時期間에는 差異를 보였다. 總葉綠素의 含量變化는 葉綠素 a의 含量變化에 起因하며 이는 여름철에는 높고 겨울철에는 낮았다. 또한 最大値는 2年生 針葉을 7,8月에 測定했을 때 나타났다. 이러한 結果를 綜合해 볼 때 소나무類의 生理的 活性은 葉綠素 a와 密接한 關係를 갖고 있는 것으로 思料된다. To obtain the fundamental data about the chlorophyll contents of some conifers, monthly measurements of them per unit fresh weight(g) of needles were performed. The results were summarized as follows. 1. Difference of total chlorophyll contents between measuring times in a species was clear but not between species. Total chlorophyll content in summer showed high value and that in winter did low value. 2. In general, the total chlorophyll contents of the conifers showed the highest values in two-year-old needles, measured in July or August. 3. Monthly change of total chlorophyll contents was mainly due to that of the contents of chlorophyll a, and the contents of chlorophyll b was not varied greatly with measuring times. 4. It seems that the physiological activity of needles was related with the contents of chlorophyll a.
산불 피해 산림의 식생 발달과 토양 보존을 위한 사면 처리 효과
김창기,정연숙,주광영,이규송 한국생태학회 2006 Journal of Ecology and Environment Vol.29 No.3
Clear-cut followed by tree planting has been a conventional management practice in burnedforests in Korea. Because this can considerably increase soil loss, hillslope treatments may be needed in order to improve soil stability at poorly regenerating areas. This paper reviews the effects of hillslope treatments, such as seeding, mulching and log erosion barriers, which soil in burned forests in North America and Europe. Seeding has been the most comon method for postfire restoration. However, the effects of seeding on vegetation cover and soil erosion are not clear and seeding with non-native species has been reported to inhibit regeneration of native vegetation. Mulching has been found to be effective at reducing soil erosion. However, this also can introduce non-native plant species and inhibit native plant regeration. Although studies on the effect of log erosion barriers are very few, it appears that log erosion barriers are effective in the period of little rainfall. Hillslope treatments for postfire restoration is not necessary for naturally regenerating areas and therefore, they should be restricted to the areas where regeneration potential is low and runof and soil loss is considerable. Long-term monitoring is needed to asses the effectiveness of hillslope treatments on soil erosion, the introduction of non-native plant species and the inhibition of natural plant regeneration.