干旱区生态环境知识资源中心(Arid): Effects of vegetation restoration on soil quality in fragile karst ecosystems of southwest China

Arid

DOI	10.7717/peerj.9456
	Effects of vegetation restoration on soil quality in fragile karst ecosystems of southwest China
	Guan, Huiling; Fan, Jiangwen
通讯作者	Fan, JW
来源期刊	PEERJ
ISSN	2167-8359
出版年	2020
卷号	8
英文摘要	Soil quality assessment is important for karst ecosystems where soil erosion is significant. A large amount of vegetation restoration has been implemented since the early 21st century in degraded karst areas across southwestern China. However, the impacts on soil quality of different restoration types rarely have been compared systematically. In the current study, we investigated the soil quality after a number of vegetation restoration projects as well as their adjacent cropland by analyzing soil samples. Six vegetation restoration types were evaluated, including one natural restoration (natural shrubland, protected for 13 years), three economic forests (4 years Eucalyptus robusta, 4 years Prunus salicina and 6 years Zenia insignis) and two mixed forests (1 year Juglans regia-crop and 13 years Toona sinensis-Pennisetum purpureum ). We evaluated the benefits of different restoration types more accurately by setting each adjacent cropland as the control and setting the variation between the corresponding restored and control site as the evaluation object so that the background differences of six sites could be eliminated. The results indicated that natural shrubland, Toona sinensis-Pennisetum purpureum and Zenia insignis were effective in improving soil quality index (SQI) in degraded karst cropland largely due to their higher SOC and TN content. The variation of SQI (VSQI) of natural shrubland was significantly higher than that in Eucalyptus robusta, Prunus salicina and Juglans regia-crop in total soil layer (0-30 cm) (P < 0.05), indicating natural shrubland had better capacity to improve soil quality. The boosting regression tree model revealed that vegetation restoration type explained 73.49% and restoration time explained 10.30% of the variation in VSQI, which confirmed that vegetation restoration type and restoration time are critical for achieving soil reserves. Therefore, it is vital to select appropriate vegetation type in restoration projects and recovery for a long time in order to achieve better soil quality. The current study provides a theoretical basis on which to assess the effects of different vegetation restoration types on the heterogeneous degraded karst areas.
英文关键词	Vegetation restoration Soil properties Soil quality index Karst areas
类型	Article
语种	英语
开放获取类型	DOAJ Gold, Green Published
收录类别	SCI-E
WOS记录号	WOS:000544827500007
WOS关键词	LAND-USE CHANGE ; ROCKY DESERTIFICATION ; ORGANIC-CARBON ; TYPICAL KARST ; NORTHWEST GUANGXI ; NITROGEN ; AREA ; EUCALYPTUS ; REGION ; INDEX
WOS类目	Multidisciplinary Sciences
WOS研究方向	Science & Technology - Other Topics
来源机构	中国科学院地理科学与资源研究所
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/324901
作者单位	[Guan, Huiling; Fan, Jiangwen] Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Key Lab Land Surface Pattern & Simulat, Beijing, Peoples R China; [Guan, Huiling] Univ Chinese Acad Sci, Beijing, Peoples R China
推荐引用方式 GB/T 7714	Guan, Huiling,Fan, Jiangwen. Effects of vegetation restoration on soil quality in fragile karst ecosystems of southwest China[J]. 中国科学院地理科学与资源研究所,2020,8.
APA	Guan, Huiling,&Fan, Jiangwen.(2020).Effects of vegetation restoration on soil quality in fragile karst ecosystems of southwest China.PEERJ,8.
MLA	Guan, Huiling,et al."Effects of vegetation restoration on soil quality in fragile karst ecosystems of southwest China".PEERJ 8(2020).