干旱区生态环境知识资源中心(Arid): Agroforestry Ecosystem Structure and the Stability Improvement Strategy in Control of Karst Desertification

Arid

DOI	10.3390/f14040845
	Agroforestry Ecosystem Structure and the Stability Improvement Strategy in Control of Karst Desertification
	Jiang, Shilian; Xiong, Kangning; Xiao, Jie; Yang, Yiling; Huang, Yunting; Wu, Zhigao
通讯作者	Xiong, KN
来源期刊	FORESTS
EISSN	1999-4907
出版年	2023
卷号	14 期号:4
英文摘要	Agroforestry systems (AFS) are priority semi-natural ecosystems in fragile ecological zones. The complexity and diversity of their species structure play a crucial role in maintaining AFS stability. To explore the optimization of improvement strategies in AFS' structure and stability for control of karst desertification (KD), in this study, we chose typical desertification control areas in the southern China karst region. The study included homegarden (HG), agrisilviculture (ASV), and multipurpose woodlots (MWLs) as three AFS. We quantified the AFS' structural characteristics using descriptive statistics and spatial structure parameters. We used the fuzzy integrated evaluation method with structural and functional indicators as guidelines, and stand structure, plant species diversity, soil fertility, and environmental factors as first-level evaluation indicators. The entropy weight method calculates the weights of indicators at all levels. The fuzzy comprehensive evaluation method establishes an evaluation index system to evaluate the grading of AFS' stability. The results showed that: (i) The species composition of the AFS in the KD control areas had a simple structure, the overall diversity level was low, and the diversity level of herbaceous plants was better than that of woody plants. (ii) The overall distribution curves of diameter at breast height (DBH), tree height (TH), and crown width (CW) of woody plants in the AFS in the KD control areas were slight to the left, with a single-peaked pattern, mostly randomly and unevenly distributed in space, with a low degree of tree species isolation and relatively weak stand stability. (iii) There was variability in the stability classes of different types of AFS, overall reflecting the ranking HG > ASV > MWLs. (iv) When structural optimization was applied, corresponding measures can be taken according to farmers' wishes for different types of AFS and their primary business purposes. The improvement of stability depends mainly on the utility of the structural optimization applied coupled with positive human interference (for example, pruning, dwarfing, and dense planting). This study provides a scientific reference for maintaining the stability of AFS and promoting service provision.
英文关键词	agroforestry structure species diversity evaluation indicator systems fuzzy integrated evaluation
类型	Article
语种	英语
开放获取类型	gold, Green Published
收录类别	SCI-E
WOS记录号	WOS:000978456900001
WOS关键词	BIODIVERSITY ; DIVERSITY ; PRODUCTIVITY ; CONSERVATION ; PATTERNS ; FORESTS ; SOIL
WOS类目	Forestry
WOS研究方向	Forestry
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/396414
推荐引用方式 GB/T 7714	Jiang, Shilian,Xiong, Kangning,Xiao, Jie,et al. Agroforestry Ecosystem Structure and the Stability Improvement Strategy in Control of Karst Desertification[J],2023,14(4).
APA	Jiang, Shilian,Xiong, Kangning,Xiao, Jie,Yang, Yiling,Huang, Yunting,&Wu, Zhigao.(2023).Agroforestry Ecosystem Structure and the Stability Improvement Strategy in Control of Karst Desertification.FORESTS,14(4).
MLA	Jiang, Shilian,et al."Agroforestry Ecosystem Structure and the Stability Improvement Strategy in Control of Karst Desertification".FORESTS 14.4(2023).