Liu Xiuping, Zhou Wangming, Li Xiaoxin, Zhang Yuming, Dong Wenxu
Key Laboratory of Agricultural Water Resources, Hebei Key Laboratory of Soil Ecology, Center for Agricultural Resources Research, Institute of Genetics and Developmental Biology, Chinese Academy of Sciences, Shijiazhuang, China.
School of life Sciences, Anqing Normal University, Anqing, China.
Front Plant Sci. 2023 Sep 8;14:1194083. doi: 10.3389/fpls.2023.1194083. eCollection 2023.
To document the successional processes of shrub-herb communities after large-scale human disturbance, and understand how changing environmental conditions affect species replacement in semi-humid hilly areas.
Utilizing the established permanent plots in the hilly area of Taihang Mountain, we evaluated temporal patterns of vegetation and soil following grass-to-shrub succession.
Along secondary succession, var. gradually dominated in dry sunny slope and shared the dominance with in shaded slope. Herbaceous dominant species in shrub-herb communities switched from , , , and in 1986 census to . and . in 2008 census, but herb was no longer dominant in 2020 census. As succession progresses, species dominance increased while richness decreased generally, and herb cover and aboveground biomass decreased, whereas shrub height, cover, and aboveground biomass increased significantly. Soil organic matter (SOM), total nitrogen (TN), total phosphorus (TP), and total potassium (TK) in topsoil increased significantly while pH declined by 1.04 units over the past three decades. Plant communities transitioned from perennial herbs to shrub-herb and then shrub communities, and . var. dominated in the succession of shrub-herb communities. Climate and soil properties, combined with plant attributes, together drive post-disturbance secondary succession. From a management perspective, the tight coupling between vegetation and soil under local climatic conditions should be considered to improve the fragile ecosystem in the hilly area of Taihang Mountain.
记录大规模人为干扰后灌草群落的演替过程，了解环境条件变化如何影响半湿润山区的物种替代。
利用太行山丘陵区已建立的永久样地，评估从草本到灌木演替过程中植被和土壤的时间格局。
在次生演替过程中，[具体物种1]变种在干燥阳坡逐渐占优势，并在阴坡与[具体物种2]共同占优势。灌草群落中的草本优势种从1986年调查中的[具体草本物种1]、[具体草本物种2]、[具体草本物种3]和[具体草本物种4]转变为2008年调查中的[具体草本物种5]、[具体草本物种6]和[具体草本物种7]，但在2020年调查中草本不再占优势。随着演替的进行，物种优势度总体增加而丰富度下降，草本盖度和地上生物量下降，而灌木高度、盖度和地上生物量显著增加。在过去三十年中，表层土壤中的土壤有机质（SOM）、全氮（TN）、全磷（TP）和全钾（TK）显著增加，而pH值下降了1.04个单位。植物群落从多年生草本转变为灌草群落，然后是灌木群落，并且[具体物种1]变种在灌草群落演替中占主导地位。气候和土壤性质，结合植物属性，共同驱动干扰后的次生演替。从管理角度来看，应考虑当地气候条件下植被与土壤之间的紧密耦合，以改善太行山丘陵区脆弱的生态系统。
