[1]YANG Hanyue,ZHANG Guanghui,ZHANG Baojun.Growth Characteristics of Typical Plant Communities on Gully Slopes in the Loess Hilly-Gully Region[J].Research of Soil and Water Conservation,2019,26(02):62-67.
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Research of Soil and Water Conservation[ISSN 1005-3409/CN 61-1272/P] Volume:
26
Number of periods:
2019 02
Page number:
62-67
Column:
Public date:
2019-04-28
- Title:
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Growth Characteristics of Typical Plant Communities on Gully Slopes in the Loess Hilly-Gully Region
- Author(s):
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YANG Hanyue1,2, ZHANG Guanghui1,2, ZHANG Baojun3
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1. Faculty of Geographical Science, Beijing Normal University, Beijing 100875, China;
2. State Key Laboratory of Earth Surface Process and Resource Ecology, Beijing Normal University, Beijing 100875, China;
3. Institute of Soil and Water Conservation, CAS & MWR, Yangling, Shaanxi 712100, China
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- Keywords:
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gully slope; plant community structure; above-ground biomass; vegetation species diversity; vegetation coverage
- CLC:
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Q948
- DOI:
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- Abstract:
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Seven typical vegetation communities were selected on steep gully slopes to analyze the vegetation characteristics of structure, species diversity and above-ground biomass. The results showed that Simpson Diversity Index decreased in the order: Hippophae rhamnoides > Leymus secalinus > Bothriochloa ischaemum > Caragana Korshinskii > Carex lanceolata > Artemisia giraldii > Artemisia gmelinii; Magarlef Richness Index decreased in the order: herb communities>shrub communities, communities on shaded slopes > communities on sunny slopes; Pielou Evenness Degree Index decreased in the order: shrub communities > herb communities, communities on shaded slopes > communities on sunny slopes. The above-ground biomass of shrub communities (1.53~5.85 kg/m2) was greater than that of herb communities (0.17~0.41 kg/m2). The above-ground biomass of herb communities decreased in the order: Leymus secalinus > Artemisia gmelinii > Artemisia giraldii > Bothriochloa ischaemum > Carex lanceolata. Vegetation coverage declined in the order: herb communities on shaded slopes > shrub communities > sage semi-brush communities on sunny slopes. The Simpson Diversity Index and Margalef Index on gully slopes were slightly lower than those on hill-slopes, while the Shannon-wiener Diversity Index on gully slopes was lower than that of hill-slopes significantly. The above-ground biomass and coverage of herb on gully slopes were significantly lower than that of hill-slopes. The results are helpful to understand the vegetation characteristics and to optimize the allocation of soil and water conservation measures at the scale of whole watershed in the hilly-gully region.