Chin J Plan Ecolo ›› 2003, Vol. 27 ›› Issue (5): 650-654.doi: 10.17521/cjpe.2003.0094

• Research Articles • Previous Articles     Next Articles

The Study of Edge-effect of Davidia involucrata Nitrogen Status With Ftir

HU Jin-Yao, SU Zhi-Xian, HE Xiao-Ying   

  • Online:2003-05-10 Published:2003-05-10
  • Contact: GUAN Jun-Feng


The practicability of edge effect research with FTIR (Fourier transform infrared spectroscopy) was investigated by two experiments. In the first, Davidia involucrata seedlings were treated with nitrogen fertilizer and nitrogen content of both tip and middle parts of seedling leaves was detected with FTIR and the method of Kjeldahl. The results showed that there were significant differences in nitrogen content among five treatment levels, either between tips or between middle parts of leaves. The nutritional status could be well estimated by leaf tips in terms of nitrogen content compared with that of middle parts of leaves according to correlation analysis. Spectral index (A1653-A3400)/(A1653+A3400) was revealed to be raised with the increase in availability and of leaf content of nitrogen, which suggested that it is possible to detect the nutritional status of D. involucrata seedlings in terms of nitrogen content by FTIR. In the second, D. involucrata leaves were collected from four aspects in Bainigang, Wolong National Nature Reserve. Tips of the leaves were analyzed with FTIR. The edge effects of nitrogen status of D. involucrata in Bainigang in terms of FTIR showed that the nitrogen levels rose from border to core areas of the forest within certain distance and the average nitrogen levels varied among different aspects and distances to different extents. It suggested that the nitrogen status of D. involucrata was significantly affected by aspect. The D. involucrate fragmentation of forest would impact the regular physiology of internal trees growing at least 30 to 40 meters away from the fragmented border. The impacts were at least 90 to 100 meters from the edge. It suggested that the growth of remaining D. involucrata was impacted seriously by human activities in the east of the forest. The results were consistent with those of previous studies of nitrogen distribution and plant nitrogen absorption at the forest edge. It showed that studying edge-effect of D. involucrata with FTIR is practicable. In our experiments, we discovered that accurate results require that the sample must be kept dry and flat.

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[1] Qihe Yang;Xiaojuan Yin;Wanhui Ye. Dormancy Mechanism and Breaking Methods for Hard Seeds[J]. Chin Bull Bot, 2006, 23(1): 108 -118 .
[2] Zhao Yun-yun;Lei He-tian and Wang Jing-lin. Fertilization and Embryo Dvelopment in Hybridization Between wheat and Pearl millet[J]. Chin Bull Bot, 1997, 14(01): 41 -43 .
[3] Qian Wu, Shuai Shao, Shanshan Li, Huijin Zhang, Liangsheng Wang. Composition of Flavonoids in Lotus Pollen[J]. Chin Bull Bot, 2015, 50(6): 721 -732 .
[4] . [J]. Chin Bull Bot, 1998, 15(专辑): 29 -31 .
[5] Ji Chun-ru;Ding Gang;Feng Wei-sheng and Liu Yan-ze. Chemical Constituents of Daphne koreana[J]. Chin Bull Bot, 1994, 11(03): 48 -49 .
[6] Hou Bing-kai;Cheng Ji-jiang and Song Xie-zhi. Plant Regeneration From Protoplasts of Different Types of wheat Callus and Their Derivative Suspensions[J]. Chin Bull Bot, 1996, 13(02): 52 -54 .
[7] Zhao Qi Liu Cun-De. Space Botany and Its Utilization[J]. Chin Bull Bot, 1995, 12(02): 15 -18 .
[8] Yang Wen-yu Song;Yan-ru and Kuang Ting-yun. Transformation of Potato Plants Via Agrobacterium and Gene Engineering for Virus Resistance[J]. Chin Bull Bot, 1993, 10(01): 10 -17 .
[9] Tian Xing-shan and Pan Rui-chi. Researh Progress on Auxin Binding Proteins[J]. Chin Bull Bot, 1996, 13(03): 1 -5 .
[10] Yao Bi-jun. [J]. Chin Bull Bot, 1988, 5(02): 121 .