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Zhang X, Wang G, Peng P, Zhou Y, Chen Z, Feng Y, Wang Y, Shi S, Li J. Influences of environment, human activity, and climate on the invasion of Ageratina adenophora (Spreng.) in Southwest China. PeerJ 2023; 11:e14902. [PMID: 36919167 PMCID: PMC10008309 DOI: 10.7717/peerj.14902] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2022] [Accepted: 01/24/2023] [Indexed: 03/11/2023] Open
Abstract
With economic and social globalization, invasive alien species have significantly threatened local ecological security. Identifying the invasive mechanisms of invasive alien species can aid in preventing species invasions and protecting local ecological and economic security. As a globally invasive plant, Ageratina adenophora (Asteraceae) has spread to many parts of the world and had a seriously impacted the ecology and economy of its invaded areas. Using observational data and Landsat OLI images in an arid valley region in southwest China, this study examined how climate, human activity and environmental factors influence the invasion of A. adenophora and its underlying mechanism. Our results showed that the invasion abundance of A. adenophora was significantly affected by environmental factors (the relative importance was 87.2%), but was less influenced by human activity and climate factors (the relative importance was 2% and 10.8%, respectively). The A. adenophora abundance significantly decreased with aspect, community canopy density, shrub layer coverage, herb layer coverage, Simpson diversity index of shrub and herb layers, the shortest distance to residential areas and temperature seasonality, whereas it increased with soil moisture, temperature annual range, precipitation of wettest month and precipitation of driest month. We conclude that biotic competition is the most influential factor in the invasion of this plant in the arid valley regions. Our results are of great significance for invasion prevention and forest conservation and management in southwest China. Our work emphasized that optimizing the community structure, such as by increasing canopy and shrub coverage and species biodiversity, may help control and mitigate the A. adenophora invasion in southwest China.
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Affiliation(s)
- Xiaojuan Zhang
- State Key Laboratory of Geohazard Prevention and Geoenvironment Protection, Chengdu University of TechnologyChengdu, Sichuan, China
- College of Earth Sciences, Chengdu University of Technology, Chengdu, Sichuan, China
- Institute of Ecological Resources and Landscape, Chengdu University of Technology, Chengdu, Sichuan, China
| | - Guoyan Wang
- State Key Laboratory of Geohazard Prevention and Geoenvironment Protection, Chengdu University of TechnologyChengdu, Sichuan, China
- Institute of Ecological Resources and Landscape, Chengdu University of Technology, Chengdu, Sichuan, China
| | - Peihao Peng
- College of Earth Sciences, Chengdu University of Technology, Chengdu, Sichuan, China
- Institute of Ecological Resources and Landscape, Chengdu University of Technology, Chengdu, Sichuan, China
- College of Tourism and Urban-Rural Planning, Chengdu University of Technology, Chengdu, Sichuan, China
| | - Yongxiu Zhou
- College of Geophysics, Chengdu University of Technolog, Chengdu, Sichuan, China
| | - Zhuo Chen
- College of Earth Sciences, Chengdu University of Technology, Chengdu, Sichuan, China
- Institute of Ecological Resources and Landscape, Chengdu University of Technology, Chengdu, Sichuan, China
| | - Yu Feng
- College of Earth Sciences, Chengdu University of Technology, Chengdu, Sichuan, China
| | - Yanru Wang
- College of Earth Sciences, Chengdu University of Technology, Chengdu, Sichuan, China
| | - Songlin Shi
- College of Earth Sciences, Chengdu University of Technology, Chengdu, Sichuan, China
- Institute of Ecological Resources and Landscape, Chengdu University of Technology, Chengdu, Sichuan, China
| | - Jingji Li
- State Key Laboratory of Geohazard Prevention and Geoenvironment Protection, Chengdu University of TechnologyChengdu, Sichuan, China
- Institute of Ecological Resources and Landscape, Chengdu University of Technology, Chengdu, Sichuan, China
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The interplay of disturbance, vegetation structure, and propagule pressure contributes to Pinus kesiya invasion in Tapia woodland, Madagascar. Biol Invasions 2022. [DOI: 10.1007/s10530-022-02819-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/02/2022]
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Wyse SV, Etherington TR, Hulme PE. Quantifying the risk of non‐native conifer establishment across heterogeneous landscapes. J Appl Ecol 2022. [DOI: 10.1111/1365-2664.14170] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Sarah V. Wyse
- School of Forestry University of Canterbury Christchurch 8140 New Zealand
- Bio‐Protection Research Centre Lincoln University Lincoln 7647 Canterbury New Zealand
| | | | - Philip E. Hulme
- Bio‐Protection Research Centre Lincoln University Lincoln 7647 Canterbury New Zealand
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Forest canopy resists plant invasions: a case study of Chromolaena odorata in Sal (Shorea robusta) forests of Nepal. JOURNAL OF TROPICAL ECOLOGY 2022. [DOI: 10.1017/s0266467421000456] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Abstract
Abstract
Invasive alien species are a major threat to global biodiversity due to the tremendous ecological and economic damage they cause in forestry, agriculture, wetlands, and pastoral resources. Understanding the spatial pattern of invasive alien species and disentangling the biophysical drivers of invasion at the forest stand level is essential for managing forest ecosystems and the wider landscape. However, forest-level and species-specific information on Invasive Alien Plant Species (IAPS) abundance and their spatial extent are largely lacking. In this context, we analysed the cover of one of the world’s worst invasive plants, Chromolaena odorata, in Sal (Shorea robusta) forest in central Nepal. Vegetation was sampled in four community forests using 0.01 ha square quadrats, covering the forest edge to the interior. C. odorata cover, floral richness, tree density, forest canopy cover, shrub cover, tree basal area, and disturbances were measured in each plot. We also explored forest and IAPS management practices in community forests. C. odorata cover was negatively correlated with forest canopy cover, distance to the road, angle of slope, and shrub cover. Tree canopy cover had the largest effect on C. odorata cover. No pattern of C. odorata cover was seen along native species richness gradients. In conclusion, forest canopy cover is the overriding biotic covariate suppressing C. odorata cover in Sal forests.
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