Spatial pattern and competition relationship of<i>Stellera chamaejasme</i>and<i>Aneurolepidium dasystachys</i>population in degraded alpine grassland

Heng, 任珩 Ren; Chengzhang, 赵成章 Zhao

doi:10.5846/stxb201112031850

Cited by 5 publications

References 1 publication

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Don’t judge toxic weeds on whether they are native but on their ecological effects

Zhang

Sun

Liu

et al. 2020

Ecology and Evolution

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The sharp rise in anthropogenic activities and climate change has caused the extensive degradation of grasslands worldwide, jeopardizing ecosystem function, and threatening human well‐being. Toxic weeds have been constantly spreading in recent decades; indeed, their occurrence is considered to provide an early sign of land degeneration. Policymakers and scientific researchers often focus on the negative effects of toxic weeds, such as how they inhibit forage growth, kill livestock, and cause economic losses. However, toxic weeds can have several potentially positive ecological impacts on grasslands, such as promoting soil and water conservation, improving nutrient cycling and biodiversity conservation, and protecting pastures from excessive damage by livestock. We reviewed the literature to detail the adaptive mechanisms underlying toxic weeds and to provide new insight into their roles in degraded grassland ecosystems. The findings highlight that the establishment of toxic weeds may provide a self‐protective strategy of degenerated pastures that do not require special interventions. Consequently, policymakers, managers, and other personnel responsible for managing grasslands need to take appropriate actions to assess the long‐term trade‐offs between the development of animal husbandry and the maintenance of ecological services provided by grasslands.

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Don’t judge toxic weeds on whether they are native but on their ecological effects

Zhang

Sun

Liu

et al. 2020

Ecology and Evolution

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Analysis of spatial distribution pattern and its influencing factors of the Tamarix chinensis population on the beach of the muddy coastal zone of Bohai Bay

Chen

Xia

Ma³

et al. 2022

Ecological Indicators

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Relationship between species distribution of sandy alpine grasslands and microtopography in the source regions of Yangtze river

Zhao

Xu²,

Tang³

et al. 2022

Front. Environ. Sci.

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Dynamic of sandy alpine grasslands affect the progress and reversal of desertification in source regions of the Yangtse Rivers. To understand geomorphic driving mechanism of species distribution pattern, we examined the species compositions and delineated the most important landform factors influencing species distribution of sandy alpine grassland using two-way indicator species analysis (TWINSPAN), detrended correspondence analysis (DCA), and canonical correspondence analysis (CCA). Field survey were conducted in summer of 2016 using stratified random methods in hilly sloped lands, floodplains, foothills, and valley land of study region. In total, 29 plant species grouped into 27 genera and 16 families were identified. Leymus secalinus, Elymus dahuricus and Corispermum declinatum are the dominant species of sandy alpine grassland communities in different microtopography. The present vegetation reflected xerosere character, which indicated that desertification of alpine grassland is in progress. Standard frequency distribution of species varied with different microtopography, the proportion of dominant species was generally lower than rare species, and the vegetation community was in a highly successional stage. Seven groups were distinguished through TWINSPAN, distribution of which in the DCA ordination graph showed species with similar ecotype is clustered together. The results of the CCA ordination revealed that slope and aspect are the dominant factors among microtopography determining the species distribution of sandy alpine grassland.

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Spatial pattern and competition relationship ofStellera chamaejasmeandAneurolepidium dasystachyspopulation in degraded alpine grassland

Abstract: Ren H, Zhao C Z. Spatial pattern and competition relationship of Stellera chamaejasme and Aneurolepidium dasystachys population in degraded alpine grassland.

Cited by 5 publications

References 1 publication

Don’t judge toxic weeds on whether they are native but on their ecological effects

Don’t judge toxic weeds on whether they are native but on their ecological effects

Analysis of spatial distribution pattern and its influencing factors of the Tamarix chinensis population on the beach of the muddy coastal zone of Bohai Bay

Relationship between species distribution of sandy alpine grasslands and microtopography in the source regions of Yangtze river

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