RETRACTED ARTICLE
Old-field Succession Sequence in Loess Area in Northern Shaanxi of China
Yaojun Boa, b, Qingke Zhub, *, Weijun Zhaoc
Article Information
Identifiers and Pagination:
Year: 2015Volume: 9
First Page: 104
Last Page: 108
Publisher ID: TOBIOTJ-9-104
DOI: 10.2174/1874070701509010104
Article History:
Received Date: 17/09/2014Revision Received Date: 17/12/2014
Acceptance Date: 23/12/2014
Electronic publication date: 25/8/2015
Collection year: 2015
open-access license: This is an open access article distributed under the terms of the Creative Commons Attribution 4.0 International Public License (CC-BY 4.0), a copy of which is available at: (https://creativecommons.org/licenses/by/4.0/legalcode). This license permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.
Abstract
Hierarchical clustering method was applied for division of stages of old-field succession of loess area of Northern Shaanxi, and the similarity among different communities in abandoned field of different abandoned year and site condition can be learnt quantitatively, and stages or sequence of old-filed succession can be determined. The result revealed that the stages of old-field succession are: polydominant association of annual weed artemisia scoparia and other perennial herbage→Lespedeza davurica and perennial herbage association→artemisia vestita and perennial herbage association→tuft grass bothriochloa ischaemum and perennial herbage association→undershrub Buddleja alternifolia association. Among them, the appearance of shrub association (undershrub Buddleja alternifolia) contrasts results in former studies that it was impossible to form shrub association in loess area of Northern Shaanxi. Thus, this study is not only a complement of former studies, but also a new discovery and innovation.