• 제목/요약/키워드: Native Tree

검색결과 285건 처리시간 0.019초

일본(日本) 구주대(九州大) 신(新)캠퍼스 개발지구에 적용된 개발훼손지(開發毁損地)의 원생림(原生林) 복원기술(復元技術)에 관한 고찰(考察) (The Restoration Technique of Native Forest Resources on the Development Land applied in the New Campus of Kyushu University, Japan)

  • 박종민
    • 한국환경복원기술학회지
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    • 제5권3호
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    • pp.50-57
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    • 2002

  • The restoration techniques of large disturbed land containing native forest resources and soil animals were investigated on the new campus area of Kyushu University in Japan. Important techniques to restore native forest and biodiversity in that area are transplantation of existing large trees, transplantation of the forest soil, transplantation of native tree stools, and the reuse of wood and bamboo chips. The benefits can be obtained by using these methods. Firstly, the native genetic resources that would be discarded as part of the land development can be reused. Secondary, the time taken to become a high growth forest as opposed to the practice of planting saplings or grass seeds can be reduced. At last, the native forest ecosystem containing various under-story vegetations and soil animals can be conserved and regenerated. In addition, big and small ponds were constructed in the biodiversity preservation zone to preserve rare plants, rare animals, and native aquatic animals. And these plants and animals were transplanted and moved to ponds.

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Genetic Diversity of mtDNA D-loop and Maternal Origin of Three Chinese Native Horse Breeds

  • Zhang, Tao;Lu, Hongzhao;Chen, Chen;Jiang, Hai;Wu, Sanqiao
    • Asian-Australasian Journal of Animal Sciences
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    • 제25권7호
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    • pp.921-926
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    • 2012

  • In order to protect the genetic resource of native horse breeds, the genetic diversity of mitochondrial DNA (mtDNA) D-loop of three native horse breeds in western China were investigated. Forty-three 600 bp mtDNA D-loop sequences were analyzed by PCR and sequencing techniques, 33 unique haplotypes with 70 polymorphic sites were detected in these horses, which account for 11.67% of 600 bp sequence analyzed, showing the abundant genetic diversity of the three native horse breeds in western China. The Neighbour-Joining (NJ) phylogenetic tree based on 247 bp of 43 D-loop sequences demonstrated the presence of seven major lineages (A to G), indicating that the three native horse breeds in western China originated from multiple maternal origins. Consistent with the front, the NJ phylogenetic tree based on 600 bp of mtDNA D-loop sequences of 43 Chinese western native horses and 81 sequences of six horse breeds from GenBank indicated that the three horse breeds had distributed into the seven major lineages (A to G). The structure of the phylogenic tree is often blurred because the variation in a short segment of the mitochondrial genome is often accompanied by high levels of recurrent mutations. Consequently, longer D-loop sequences are helpful in achieving a higher level of molecular resolution in horses.

  • https://doi.org/10.5713/ajas.2011.11483 인용 PDF KSCI