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- Title
Dynamics and ecological niche of weed communities in rape field of Linzhi, Tibet.
- Authors
NI Ma- qu-zhen; FANG Jiang-ping; ZHENG Wei-lie; HAO Wen-yuan
- Abstract
Relative abundance and niche of weed communities in the rape field of Linzhi, Tibet were investigated. Seven families and 11 species were observed in the rape field and Legumino-sae, Poaceae and Chenopodiaceae were the three major family. Cirsium lanatum, Plantago asiatica, Avena fatua, Medicago lupulina, Poa annua and Vicia angustifolia were the predominant species. In addition, we identified the variation characteristics of dominant weed species. Mid-April was the initial period and early May and late June were the two peaking periods of weed growing. M. lupulina had the widest ecological niche and therefore serious harm to rape. P. asiati-ca and C. lanatum had certain-degree harm to rape. P. annua and P. asiatica had the largest overlap, which were larger than the horizontal and vertical ecological niches of A. fatua, and had similar utilization of resource. Therefore, we can use relative abundance and niche to identify the dominant weed species and predict their harm to rape.
- Subjects
WEEDS; RAPESEED; CHENOPODIACEAE; GRASSES; LEGUMES
- Publication
Chinese Journal of Applied Ecology / Yingyong Shengtai Xuebao, 2015, Vol 26, Issue 5, p1320
- ISSN
1001-9332
- Publication type
Article