Ecological Filtering Effect of Dicranopteris Synusia under Eucalyptus Plantation in South China

Dicranopteris is the most representative pioneer species, dominant species and key species in degraded slope land in South China. Dicranopteris could quickly form dense synusia of a single and dominant species. In contrast to the traditional view that Dicranopteris hinders forest regeneration, we f...

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Autores principales:	Liu Meijie, Sun Zhongyu, Geng Shoubao, Wen Meili, Dai Jialing, Yang Long
Formato:	article
Lenguaje:	ZH
Publicado:	Editorial Committee of Tropical Geography 2021
Materias:	seedling growth understory vegetation fern transplant seedlings community succession root blanket synusia Geography (General) G1-922
Acceso en línea:	https://doaj.org/article/197dc3fac7b84aa38724c21fb2a22ef0
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spelling	oai:doaj.org-article:197dc3fac7b84aa38724c21fb2a22ef02021-11-26T08:03:42ZEcological Filtering Effect of Dicranopteris Synusia under Eucalyptus Plantation in South China1001-522110.13284/j.cnki.rddl.003411https://doaj.org/article/197dc3fac7b84aa38724c21fb2a22ef02021-11-01T00:00:00Zhttp://www.rddl.com.cn/CN/10.13284/j.cnki.rddl.003411https://doaj.org/toc/1001-5221Dicranopteris is the most representative pioneer species, dominant species and key species in degraded slope land in South China. Dicranopteris could quickly form dense synusia of a single and dominant species. In contrast to the traditional view that Dicranopteris hinders forest regeneration, we found that there are a few species that could settle down in Dicranopteris synusia. We proposed a hypothesis that Dicranopteris synusia could act as an ecological filter. In this study, we transplanted 12 target species seedlings under Dicranopteris synusia with 4 treatments to explore the ecological filtering effect of Dicranopteris synusia, and analyzed the mechanism with soil characteristics. The 4 treatments included the understory removal treatment (UR), the aboveground of Dicranopteris synusia were kept (AF), the root blanket of Dicranopteris synusia were kept (AR) and all of the Dicranopteris were kept (CK). The results showed that: 1) Compared with the red soil under Dicranopteris synusia of Eucalyptus plantation and bare ground, the contents of soil organic matter, total nitrogen, hydrolyzed nitrogen, available phosphorus, available potassium, and exchangeable base ions in the root blanket of Dicranopteris synusia were significantly higher. 2) The majority of the tree species and all of the herbaceous species could not survive with the root blanket of Dicranopteris synusia kept (AR and CK). The species that could survive with the root blanket of Dicranopteris synusia kept were Schima superba, Rhodomyrtus tomentosa, Ilex asprella and Melastoma candidum. The results indicated that Dicranopteris synusia could act as an ecological filter. The key lies in the role of root blanket of Dicranopteris synusia, and not in the improvement of soil nutrients. Theoretically, Dicranopteris synusia, especially the root blanket of Dicranopteris synusia, is closely related to the breakthrough of biological threshold for ecological restoration. In the future, it is necessary to further analyze the structure and function of the root blanket of Dicranopteris synusia. In terms of application, there are a large number of plantation types (such as Eucalyptus plantation) that Dicranopteris occupied as a single dominant understory species in South China. Therefore, we should pay more attention to the ecological filtering effect of Dicranopteris synusia in structural optimization and stand transformation. This study could provide a reference for the restoration and reconstruction of degraded slope land in South China.Liu MeijieSun ZhongyuGeng ShoubaoWen MeiliDai JialingYang LongEditorial Committee of Tropical Geographyarticleseedling growthunderstory vegetationferntransplant seedlingscommunity successionroot blanket synusiaGeography (General)G1-922ZHRedai dili, Vol 41, Iss 6, Pp 1338-1346 (2021)
institution	DOAJ
collection	DOAJ
language	ZH
topic	seedling growth understory vegetation fern transplant seedlings community succession root blanket synusia Geography (General) G1-922
spellingShingle	seedling growth understory vegetation fern transplant seedlings community succession root blanket synusia Geography (General) G1-922 Liu Meijie Sun Zhongyu Geng Shoubao Wen Meili Dai Jialing Yang Long Ecological Filtering Effect of Dicranopteris Synusia under Eucalyptus Plantation in South China
description	Dicranopteris is the most representative pioneer species, dominant species and key species in degraded slope land in South China. Dicranopteris could quickly form dense synusia of a single and dominant species. In contrast to the traditional view that Dicranopteris hinders forest regeneration, we found that there are a few species that could settle down in Dicranopteris synusia. We proposed a hypothesis that Dicranopteris synusia could act as an ecological filter. In this study, we transplanted 12 target species seedlings under Dicranopteris synusia with 4 treatments to explore the ecological filtering effect of Dicranopteris synusia, and analyzed the mechanism with soil characteristics. The 4 treatments included the understory removal treatment (UR), the aboveground of Dicranopteris synusia were kept (AF), the root blanket of Dicranopteris synusia were kept (AR) and all of the Dicranopteris were kept (CK). The results showed that: 1) Compared with the red soil under Dicranopteris synusia of Eucalyptus plantation and bare ground, the contents of soil organic matter, total nitrogen, hydrolyzed nitrogen, available phosphorus, available potassium, and exchangeable base ions in the root blanket of Dicranopteris synusia were significantly higher. 2) The majority of the tree species and all of the herbaceous species could not survive with the root blanket of Dicranopteris synusia kept (AR and CK). The species that could survive with the root blanket of Dicranopteris synusia kept were Schima superba, Rhodomyrtus tomentosa, Ilex asprella and Melastoma candidum. The results indicated that Dicranopteris synusia could act as an ecological filter. The key lies in the role of root blanket of Dicranopteris synusia, and not in the improvement of soil nutrients. Theoretically, Dicranopteris synusia, especially the root blanket of Dicranopteris synusia, is closely related to the breakthrough of biological threshold for ecological restoration. In the future, it is necessary to further analyze the structure and function of the root blanket of Dicranopteris synusia. In terms of application, there are a large number of plantation types (such as Eucalyptus plantation) that Dicranopteris occupied as a single dominant understory species in South China. Therefore, we should pay more attention to the ecological filtering effect of Dicranopteris synusia in structural optimization and stand transformation. This study could provide a reference for the restoration and reconstruction of degraded slope land in South China.
format	article
author	Liu Meijie Sun Zhongyu Geng Shoubao Wen Meili Dai Jialing Yang Long
author_facet	Liu Meijie Sun Zhongyu Geng Shoubao Wen Meili Dai Jialing Yang Long
author_sort	Liu Meijie
title	Ecological Filtering Effect of Dicranopteris Synusia under Eucalyptus Plantation in South China
title_short	Ecological Filtering Effect of Dicranopteris Synusia under Eucalyptus Plantation in South China
title_full	Ecological Filtering Effect of Dicranopteris Synusia under Eucalyptus Plantation in South China
title_fullStr	Ecological Filtering Effect of Dicranopteris Synusia under Eucalyptus Plantation in South China
title_full_unstemmed	Ecological Filtering Effect of Dicranopteris Synusia under Eucalyptus Plantation in South China
title_sort	ecological filtering effect of dicranopteris synusia under eucalyptus plantation in south china
publisher	Editorial Committee of Tropical Geography
publishDate	2021
url	https://doaj.org/article/197dc3fac7b84aa38724c21fb2a22ef0
work_keys_str_mv	AT liumeijie ecologicalfilteringeffectofdicranopterissynusiaundereucalyptusplantationinsouthchina AT sunzhongyu ecologicalfilteringeffectofdicranopterissynusiaundereucalyptusplantationinsouthchina AT gengshoubao ecologicalfilteringeffectofdicranopterissynusiaundereucalyptusplantationinsouthchina AT wenmeili ecologicalfilteringeffectofdicranopterissynusiaundereucalyptusplantationinsouthchina AT daijialing ecologicalfilteringeffectofdicranopterissynusiaundereucalyptusplantationinsouthchina AT yanglong ecologicalfilteringeffectofdicranopterissynusiaundereucalyptusplantationinsouthchina
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Ecological Filtering Effect of Dicranopteris Synusia under Eucalyptus Plantation in South China

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