Vegetation structure, niche width, niche overlap and types of competition in temperate grazingland of Garhwal Himalaya, India

Anthwal, Smriti; Bhatt, Arun; Nautiyal, B. P.; Anthwal, Ashish

doi:10.1007/s10669-007-9137-1

Cited by 13 publications

(9 citation statements)

References 21 publications

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“…Niche theory has been widely used in the study of plant community ecology [30]. Niche breadth and overlap are important indices to further quantify the resource utilization efficiency and competition/coexistence of different populations [31–33]. Shannon-Wiener niche breadth ( B i ) was calculated following Colwell & Futuyma [34] and Pianka niche overlap ( O ik ) was calculated using the following equation [35]: …”

Section: Methodsmentioning

confidence: 99%

Soil and vegetation conditions changes following the different sand dune restoration measures on the Zoige Plateau

Luo

Deng

Zhang³

et al. 2019

PLoS ONE

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Alpine sand dunes restoration is extremely difficult but important in the ecosystem restoration. Sand dunes are known as harsh soil and poor seed bank which freed from advantages on plants growth naturally. Effective restoration measures are required to guide the sand dune restoration. Here, indigenous grass (Elymus nutans) was sown in sand dune on the Zoige Plateau and treated with no sand barrier (CK) and environmental friendly materials including wicker sand barrier (wicker) and sandbag sand barrier (sandbag). The soil conditions were assessed by measuring the soil moisture and nutrients of the topsoil, and interspecific relationship and population niche were utilized to analyze the plant community structure variances among different restoration measures. Results showed that the soil and vegetation in the sand barriers measures were better than that in the CK. The soil moisture in the sandbag measure was 16.67% higher than that in the wicker measure. The nutrients content and microbial biomass were also the best in the sandbag measures. The ratio of strong association was the highest in the sandbag measure and the lowest in the CK, whereas the plants had the highest none association ratio in the CK. In addition, the average population niche overlap ranked by sandbag (0.39)>wicker (0.32)>CK (0.26). Thus, incorporation of sand barriers and indigenous grass seeding in alpine sand dunes could promote the sand dune restoration. And the sandbag measure showed a stronger improvement effect on the sand dune soil and vegetation conditions than the wicker measure.

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Section: Methodsmentioning

confidence: 99%

Soil and vegetation conditions changes following the different sand dune restoration measures on the Zoige Plateau

Luo

Deng

Zhang³

et al. 2019

PLoS ONE

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“…Additionally, niche theory has been widely used in the study of plant community ecology [30]. Niche breadth and overlap are important indices to further quantify the resource utilization efficiency and competition/coexistence of different populations [31-33]. Shannon-Wiener niche breadth ( B i ) was calculated following Colwell & Futuyma [34] and The Pianka niche overlap ( O ik ) was calculated using the following equation [35]: Here, P ij and P kj are a proportion of quadrat j among the total quadrats occupied by species i and k ; r is the total number of quadrats.…”

Section: Methodsmentioning

confidence: 99%

Soil and vegetation conditions changes following the different sand dune restoration measures on the Zoige Plateau

Luo

Deng

Zhang³

et al. 2019

Preprint

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2Restoration of alpine sand dunes has been increasingly attracting the attention of ecologists due to their 3 difficulty and importance among the mountain-river-forest-farmland-lake-grass system (referred as 4 meta-ecosystem) restoration. Alpine sand dunes are suffered from unstable soil and lack of plants. 5Efficient restoration measures are vital to guide the sand dune restoration. Whether the engineering 6 materials co-applied with seeding could achieve considerable restoration in such areas? Here, sandbag 7 and wicker as environmental friendly materials combined with Elymus nutans seeding were 8 implemented on the Zoige Plateau sand dune, comparing with the 'control' treatment that only seeding. 9We assessed the topsoil conditions by sampled the surface soil and measured the water capacity and 10 nutrients. We also utilized interspecific relationship and population niche to analyse the plant 11 community structure variances among different restoration measures. Results showed that the soil 12 conditions got clearly improved in sandbag area than that in wicker area when compared with that in 13 control area. The community in control area was the least structured, while the species showed the 14 closest related in sandbag area. In addition, average population niche overlap showed a control (0.26) 15 ﹤wicker (0.32)﹤sandbag (0.39) ranking. Thus, we suggested that sandbag or wicker co-applied with 16 indigenous grass seeding is a practical and quick restoration approach in alpine sand dunes, and the 17 sandbag may surpasses the wicker. Moreover, soil amending measures including nutrient improvement, 18and microbial fertilizer addition may further accelerate sand dune restoration. 19 Keywords: interspecific relationship; niche; Elymus nutans; sand barrier; restoration 3 20 Introduction 21The terrestrial ecosystem has experienced increasingly severe land degradation and desertification 22[1]. Desertification threatens the ecological safety and its restoration is one of the vital elements in the 23 mountain-river-forest-farmland-lake-grass system (referred as meta-ecosystem) restoration [2, 3]. The 24 long-termed complex causes (e.g., overgrazing, climate change) accelerate desertification process and 25 the sand dunes are expanding continuously on the Zoige Plateau [4-6]. Sand dunes are generally 26 covered by nutrient devoid sandy soil that lacks favourable properties for plant growth and is prone to 27 wind erosion [7]. The expanded sand dunes destroy fertile land and welfare of local populations. For 28 example, they threaten livestock productivity, society development, ecological civilization, household 29 income or human beings health [8-10]. Hence, sand dunes restoration is crucial in ensuring the 30 conservation and sustainable development of the Zoige Plateau and meeting aspiration for better living 31 standards in local people. 32Decades worth of works have been conducted on sand dunes restoration [11, 12]. Mechanical sand 33 barriers as the classical and simplest measure have been shown to contribute to re...

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“…Under this condition, because of effect of vegetation on soil resources, soil resources are distributed in a homogeneous pattern. Species with various resource requirements within a community can occupy various niches (Anthwal et al 2008). Species with different niches tend to live more closely than species with similar niches because of species competition (Anthwal et al 2008).…”

Section: Relationship Between Soil Erosion and Vegetation Under Diffementioning

confidence: 99%

“…Species with various resource requirements within a community can occupy various niches (Anthwal et al 2008). Species with different niches tend to live more closely than species with similar niches because of species competition (Anthwal et al 2008). As a result, as diversity increases, the overlap among the different plant canopies increases, but the total area of vegetation contracts.…”

Section: Relationship Between Soil Erosion and Vegetation Under Diffementioning

confidence: 99%

Comprehensive analysis of relationship between vegetation attributes and soil erosion on hillslopes in the Loess Plateau of China

Hou

Wang

et al. 2014

Environ Earth Sci

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In soil and water conservation research, vegetation is considered to be a primary factor affecting soil erosion. Many studies focus on the relationship between soil erosion and a given attribute of vegetation. Few studies have attempted a comprehensive analysis of vegetation attributes. Thus, the aim of this study is to explain the relationship between vegetation and soil erosion in detail. We studied 104 vegetation plots and 104 soil samples in the Yangjuangou catchment, Loess Plateau, Shaanxi Province, China. According to a correlation analysis of the vegetation attributes and soil 137Cs inventories, vegetation cover exerts a positive effect on soil erosion. In addition, vegetation aggregation increases with increasing soil loss. During this period of study, plant diversity can have different relationships with soil erosion according to the vegetation pattern. When vegetation distribution is relatively homogeneous, plant cover decreases with increasing diversity, and the soil loss increases. When vegetation pattern distributes between homogeneous and heterogeneous, the relationship between vegetation diversity and soil erosion is not obvious. When vegetation distribution is in a heterogeneous pattern, cover increases with increasing diversity, and soil loss decreases.

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Vegetation structure, niche width, niche overlap and types of competition in temperate grazingland of Garhwal Himalaya, India

Cited by 13 publications

References 21 publications

Soil and vegetation conditions changes following the different sand dune restoration measures on the Zoige Plateau

Soil and vegetation conditions changes following the different sand dune restoration measures on the Zoige Plateau

Soil and vegetation conditions changes following the different sand dune restoration measures on the Zoige Plateau

Comprehensive analysis of relationship between vegetation attributes and soil erosion on hillslopes in the Loess Plateau of China

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