As a masterpiece of Hawthorne's works, The Scarlet Letter sets up on New England in the seventieth century and successfully depicts the cruelty of Puritan society and the kill to human nature. However, it seems th...As a masterpiece of Hawthorne's works, The Scarlet Letter sets up on New England in the seventieth century and successfully depicts the cruelty of Puritan society and the kill to human nature. However, it seems that this is not the only purpose for the author to criticize the Puritanism. Hawthorne also endeavors to pursuit an ideal harmony through the image of the forest,which is omitted by most of the scholars who research Hawthorne's works, especially for The Scarlet Letter. In this thesis, it aims to illustrate the ideal harmony from two perspectives: first, the image of the forest stands for the harmony of the primitive life; second, the image of the forest represents the harmony of the development both in body and mind.展开更多
For the sake of exploring how the pattern of Chinese pine （Pinus massoniana Lamb） community changed after the invasion of the pine wood nematode （Bursaphelenchus xylophilus （Steiner ＆ Buhrer） Niclde） in Zhousha...For the sake of exploring how the pattern of Chinese pine （Pinus massoniana Lamb） community changed after the invasion of the pine wood nematode （Bursaphelenchus xylophilus （Steiner ＆ Buhrer） Niclde） in Zhoushan, Zhejiang Province, we established a test area in the local Chinese pine community. Landsat5 TM images from 1991 and 2006 were integrated with auxiliary data from field investigation and spectral data as additional sources of information. A method of expert knowledge classifier was applied to establish the expert knowledge dataset of the main vegetation cover types from which we obtained a forest type distribution map. The spatial patterns and stability of the forest, before and after the invasion of the pine wood nematode, were analyzed in terms of community patterns. The results indicated that the predominant coniferous forest type changed to a mixed forest. As a result, the forest structure became complex and the interaction between coniferous forest patches became weakened over the period from 1991 to 2006. Therefore, the resistance of the forest eco-system to plant diseases and insect pests and the stability of forest eco-system enhanced.展开更多
文摘As a masterpiece of Hawthorne's works, The Scarlet Letter sets up on New England in the seventieth century and successfully depicts the cruelty of Puritan society and the kill to human nature. However, it seems that this is not the only purpose for the author to criticize the Puritanism. Hawthorne also endeavors to pursuit an ideal harmony through the image of the forest,which is omitted by most of the scholars who research Hawthorne's works, especially for The Scarlet Letter. In this thesis, it aims to illustrate the ideal harmony from two perspectives: first, the image of the forest stands for the harmony of the primitive life; second, the image of the forest represents the harmony of the development both in body and mind.
文摘For the sake of exploring how the pattern of Chinese pine （Pinus massoniana Lamb） community changed after the invasion of the pine wood nematode （Bursaphelenchus xylophilus （Steiner ＆ Buhrer） Niclde） in Zhoushan, Zhejiang Province, we established a test area in the local Chinese pine community. Landsat5 TM images from 1991 and 2006 were integrated with auxiliary data from field investigation and spectral data as additional sources of information. A method of expert knowledge classifier was applied to establish the expert knowledge dataset of the main vegetation cover types from which we obtained a forest type distribution map. The spatial patterns and stability of the forest, before and after the invasion of the pine wood nematode, were analyzed in terms of community patterns. The results indicated that the predominant coniferous forest type changed to a mixed forest. As a result, the forest structure became complex and the interaction between coniferous forest patches became weakened over the period from 1991 to 2006. Therefore, the resistance of the forest eco-system to plant diseases and insect pests and the stability of forest eco-system enhanced.
