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Article: Small Semi-Fossorial Herbivores Affect the Allocation of Above- and Below-Ground Plant Biomass in Alpine Meadows.

Wang, Qian / Pang, Xiao Pan / Guo, Zheng Gang

2022 Volume 13, Page(s) 830856

Abstract: Small semi-fossorial herbivores can affect plant aboveground biomass (AGB) in grasslands and possibly alter the allocation of AGB and belowground biomass (BGB). In this study, plateau pika ( ...

Abstract	Small semi-fossorial herbivores can affect plant aboveground biomass (AGB) in grasslands and possibly alter the allocation of AGB and belowground biomass (BGB). In this study, plateau pika (
Language	English
Publishing date	2022-02-21
Publishing country	Switzerland
Document type	Journal Article
ZDB-ID	2613694-6
ISSN	1664-462X
ISSN	1664-462X
DOI	10.3389/fpls.2022.830856
Database	MEDical Literature Analysis and Retrieval System OnLINE

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Article: Consequences of plateau pika disturbance on plant-soil carbon and nitrogen in alpine meadows.

Xu, Xue Ting / Wang, Yi Mo / Wang, Xiao Zheng / Li, Jie Na / Li, Jie / Yang, Ding / Guo, Zheng Gang / Pang, Xiao Pan

Frontiers in plant science

2024 Volume 15, Page(s) 1362125

Abstract: The presence of burrowing mammals can have extensive effects on plants and soils, creating bare soil patches in alpine meadows and potentially altering plant-soil carbon (C) and nitrogen (N). This study focuses on the plateau pika ( ...

Abstract	The presence of burrowing mammals can have extensive effects on plants and soils, creating bare soil patches in alpine meadows and potentially altering plant-soil carbon (C) and nitrogen (N). This study focuses on the plateau pika (
Language	English
Publishing date	2024-02-29
Publishing country	Switzerland
Document type	Journal Article
ZDB-ID	2613694-6
ISSN	1664-462X
ISSN	1664-462X
DOI	10.3389/fpls.2024.1362125
Database	MEDical Literature Analysis and Retrieval System OnLINE

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Article: The impact of the plateau pika on the relationship between plant aboveground biomass and plant species richness

Pang, Xiao Pan / Wang, Qian / Guo, Zheng Gang

Land degradation & development. 2021 Feb. 15, v. 32, no. 3

2021

Abstract: Herbivores can influence plant species richness and plant aboveground biomass. However, only a few studies have examined their impact on the relationship between plant aboveground biomass and plant species richness, focusing on large herbivores. This ... ...

Abstract	Herbivores can influence plant species richness and plant aboveground biomass. However, only a few studies have examined their impact on the relationship between plant aboveground biomass and plant species richness, focusing on large herbivores. This study examined the influence of a small burrowing herbivore, the plateau pika (Ochotona curzoniae) with averaging 150 g, on the plant aboveground biomass, plant species richness, and their relationship in the alpine meadows on the Qinghai–Tibet Plateau. The study used a random stratified paired sampling design to collect data on plant species richness and plant aboveground biomass across five sites. Each site contained 10 pairs of plots. Each pair consisted of an undisturbed plot and a disturbed plot. Plant species richness was higher in the disturbed plots; whereas, plant aboveground biomass did not differ in relation to plateau pika disturbance. In the undisturbed plots, the plant species richness increased positively with plant aboveground biomass. In the disturbed plots, the plant species richness peaked at intermediate plant aboveground biomass levels. The findings suggest that small herbivores could alter the relationship between plant aboveground biomass and plant species richness by inducing an increase in plant species diversity, and they should be considered for assessing the management and conservation measures of alpine meadow.
Keywords	Ochotona curzoniae ; aboveground biomass ; alpine meadows ; herbivores ; land degradation ; species richness ; China
Language	English
Dates of publication	2021-0215
Size	p. 1205-1212.
Publishing place	John Wiley & Sons, Ltd.
Document type	Article
Note	NAL-AP-2-clean ; JOURNAL ARTICLE
ZDB-ID	1319202-4
ISSN	1085-3278
ISSN	1085-3278
DOI	10.1002/ldr.3790
Database	NAL-Catalogue (AGRICOLA)

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Article: Effect of plateau zokor on soil carbon and nitrogen concentrations of alpine meadows

Yang, Ding / Pang, Xiao Pan / Jia, Zhi Feng / Guo, Zheng Gang

Catena. 2021 Dec., v. 207

2021

Abstract: Small subterranean mammals cause extensive disturbance of grasslands by producing many mounds in the grasslands. This study aimed to evaluate the effect of a small subterranean mammal, plateau zokor (Myospalax fontanierii), on soil carbon and nitrogen ... ...

Abstract	Small subterranean mammals cause extensive disturbance of grasslands by producing many mounds in the grasslands. This study aimed to evaluate the effect of a small subterranean mammal, plateau zokor (Myospalax fontanierii), on soil carbon and nitrogen concentrations in alpine meadows. In this study, the disturbance effect by plateau zokor on alpine meadow was classified into mound, edge vegetation zone and undisturbed vegetation areas, and a random stratified paired sampling design was used to collect soil samples at mound, edge vegetation zone and undisturbed vegetation area. The results of the present study found that the soil total carbon, organic carbon and total nitrogen concentrations in undisturbed soil were higher than those in mound soil and lower than those in edge soil; the nitrate nitrogen (NO₃⁻-N) concentration in edge soil was higher than that in undisturbed soil and lower than that in mound soil. However, the soil inorganic carbon and ammonium nitrogen (NH₄⁺-N) concentrations were site dependent. The results of the present study also found that ratios of soil organic carbon to soil total nitrogen (C: N) were lower in mound soil than in edge soil and undisturbed soil, and the ratios of NH₄⁺-N to NO₃⁻-N (ANR) were higher in mound soil than in edge soil and undisturbed soil across the three sites and at individual site, which imply that the lower C: N and higher ANR in mounds are a possible mechanism by which bare mound caused by small subterranean mammals can naturally recover. The findings of this study reveal the general patterns of soil total carbon, soil organic carbon, soil total nitrogen, NO₃⁻-N, C: N, and ANR in relation to disturbance effects, and present a possible approach for estimating how the presence of a small subterranean mammals influences grassland soil carbon and soil nitrogen.
Keywords	alpine meadows ; ammonium nitrogen ; catenas ; grassland soils ; mammals ; nitrate nitrogen ; nitrogen ; soil inorganic carbon ; soil organic carbon ; total nitrogen
Language	English
Dates of publication	2021-12
Publishing place	Elsevier B.V.
Document type	Article
ZDB-ID	519608-5
ISSN	1872-6887 ; 0008-7769 ; 0341-8162
ISSN (online)	1872-6887 ; 0008-7769
ISSN	0341-8162
DOI	10.1016/j.catena.2021.105625
Database	NAL-Catalogue (AGRICOLA)

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Z 3389: Show issues

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Article: Effect of plateau pika (Ochotona curzoniae) bioturbation on soil C-N-P stoichiometry in alpine meadows

Pang, Xiao Pan / Yang, Huan / Wei, Xiao Xing / Guo, Zheng Gang

Geoderma. 2021 Sept. 01, v. 397

2021

Abstract: Bioturbation by small burrowing herbivores can affect soil organic carbon (C), total nitrogen (N) and total phosphorus (P) concentrations mainly by creating visible bare soil patches that are interspersed within vegetated surfaces in grasslands. This ... ...

Abstract	Bioturbation by small burrowing herbivores can affect soil organic carbon (C), total nitrogen (N) and total phosphorus (P) concentrations mainly by creating visible bare soil patches that are interspersed within vegetated surfaces in grasslands. This study focused on plateau pikas (Ochotona curzoniae) to investigate the effects of bioturbation by these small burrowing herbivores on the soil C, N, and P concentrations and their stoichiometry in bare and vegetated soils in alpine meadows. This study showed that plateau pika bioturbation was related to lower organic C concentrations in bare soil in the 0–10 cm and 10–20 cm layers than in vegetated soil and to lower total N concentrations in bare soil than in vegetated soil only in the 0–10 cm layer, whereas no significant differences were observed for the P concentrations. This study also showed that plateau pika bioturbation results in lower C:N and C:P ratios in bare soil than in vegetated soil at two soil depths and lower N:P ratios only in the 0–10 cm layer. These results presented a pattern of how bioturbation by small burrowing herbivores influences soil stoichiometry (C:N:P). The findings of this study imply that lower C:N and C:P ratios are a possible mechanism by which bare soil patches caused by small burrowing herbivores can naturally recover.
Keywords	Ochotona curzoniae ; bioturbation ; soil organic carbon ; stoichiometry ; total nitrogen ; total phosphorus
Language	English
Dates of publication	2021-0901
Publishing place	Elsevier B.V.
Document type	Article
Note	NAL-AP-2-clean
ZDB-ID	281080-3
ISSN	1872-6259 ; 0016-7061
ISSN (online)	1872-6259
ISSN	0016-7061
DOI	10.1016/j.geoderma.2021.115098
Database	NAL-Catalogue (AGRICOLA)

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Article: Effects of plateau pika disturbance levels on the plant diversity and biomass of an alpine meadow

Pang, Xiao Pan / Guo, Zheng Gang

Grassland science. 2018 July, v. 64, no. 3

2018

Abstract: The plateau pika (Ochotona curzoniae) is known to influence the plant diversity and biomass of the alpine meadow, and it is regarded as a pest. The species has been subject to extensive controls without a clear target density in the Qinghai‐Tibetan ... ...

Abstract	The plateau pika (Ochotona curzoniae) is known to influence the plant diversity and biomass of the alpine meadow, and it is regarded as a pest. The species has been subject to extensive controls without a clear target density in the Qinghai‐Tibetan Plateau. We investigated the effects of different plateau pika disturbance levels on plant composition, species diversity and biomass. The density of active burrow entrances was used as an index of disturbance levels I, II, III and IV (corresponding to 8, 19, 27 and 39 active burrow entrances per 625 m2). We found that the plant community composition differed with different disturbance levels. The plant replacements were mainly related to associate plants rather than dominant plants. With the increase in the plateau pika disturbance levels, the plant cover decreased, and the plant height first increased and then decreased. The plant evenness index was higher in the levels II and III disturbance conditions, while the plant diversity index and plant richness index were highest in the level IV disturbance condition. The disturbance levels had no effect on the total plant biomass; however, the intermediate disturbance levels (II and III) increased the palatable plant biomass. The total plant biomass was mainly dependent on the unpalatable plant biomass. The total plant biomass showed a positive correlation with the richness index and a negative correlation with the evenness index. The palatable plant biomass showed a positive correlation with the evenness index and a negative correlation with the richness index. These results imply that the intermediate disturbance levels are beneficial to livestock production as they increase the alpine meadow quality, and the higher disturbance level is better for plant diversity conservation in the alpine meadows of the Qinghai‐Tibetan Plateau.
Keywords	Ochotona curzoniae ; alpine meadows ; botanical composition ; burrows ; livestock production ; pests ; phytomass ; plant height ; China
Language	English
Dates of publication	2018-07
Size	p. 159-166.
Publishing place	John Wiley & Sons, Ltd
Document type	Article
Note	JOURNAL ARTICLE
ZDB-ID	2296471-X
ISSN	1744-697X ; 1744-6961
ISSN (online)	1744-697X
ISSN	1744-6961
DOI	10.1111/grs.12199
Database	NAL-Catalogue (AGRICOLA)

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Article: Effects of small-herbivore disturbance on the clonal growth of two perennial graminoids in alpine meadows

Wang, Qian / Guo, Zheng Gang / Pang, Xiao Pan / Zhang, Jing / Yang, Huan

Alpine botany. 2020 Oct., v. 130, no. 2

2020

Abstract: Graminoids are typically the dominant plants in certain grassland communities, and their clonal growth is considered an important method of evaluating their adaptation to environmental disturbances. Whether disturbances caused by small burrowing ... ...

Abstract	Graminoids are typically the dominant plants in certain grassland communities, and their clonal growth is considered an important method of evaluating their adaptation to environmental disturbances. Whether disturbances caused by small burrowing herbivores influence clonal growth in graminoids is not well documented. A field experiment was conducted to investigate the effects of disturbances by small burrowing herbivores, the plateau pika, on the clonal growth of the tussock-forming Kobresia pygmaea and the rhizomatous K. humilis across three sites. This study showed that disturbance by plateau pikas increased the shoot number, spacer number and tiller bud number per clonal fragment of both the tussock-forming K. pygmaea and the rhizomatous K. humilis across three sites. This study also showed that disturbance by plateau pikas increased the rhizome branch number, rhizome length, and rhizome bud number per clonal fragment of rhizomatous K. humilis at each site, while the effects of disturbance by plateau pikas on the rhizome branch number, rhizome length, and rhizome bud number per clonal fragment of the tussock-forming K. pygmaea were different among the three sites. These results suggested that disturbance by plateau pikas benefits for current and potential population recruitment in the tussock-forming K. pygmaea and the rhizomatous K. humilis due to the resulting higher shoot number and tiller bud number per clonal fragment.
Keywords	Kobresia ; Ochotona curzoniae ; alpine meadows ; burrowing ; field experimentation ; graminoids ; herbivores ; length ; rhizomes ; species recruitment
Language	English
Dates of publication	2020-10
Size	p. 115-127.
Publishing place	Springer International Publishing
Document type	Article
Note	NAL-light
ZDB-ID	2600962-6
ISSN	1664-221X ; 1664-2201
ISSN (online)	1664-221X
ISSN	1664-2201
DOI	10.1007/s00035-020-00240-9
Database	NAL-Catalogue (AGRICOLA)

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Article: Effect of partial root-zone drying irrigation (PRDI) on the biomass, water productivity and carbon, nitrogen and phosphorus allocations in different organs of alfalfa

Zhang, Jing / Wang, Qian / Pang, Xiao Pan / Xu, Hai Peng / Wang, Juan / Zhang, Wen Na / Guo, Zheng Gang

Agricultural water management. 2021 Jan. 01, v. 243

2021

Abstract: Partial root-zone drying irrigation (PRDI) can influence carbon (C), nitrogen (N), and P (phosphorus) allocations in annual crop plants. This study consisted of a two-factorial split-plot field experiment conducted on Huanghua farmland in western China, ... ...

Abstract	Partial root-zone drying irrigation (PRDI) can influence carbon (C), nitrogen (N), and P (phosphorus) allocations in annual crop plants. This study consisted of a two-factorial split-plot field experiment conducted on Huanghua farmland in western China, and it was focused on investigating the effects of PRDI on the biomass; water productivity; and C, N and P allocations in a perennial plant (alfalfa) from 2016-2017. The two factors were the irrigation mode (PRDI and conventional furrow irrigation (CFI)) and irrigation volume (70 %-I₁, 85 %-I₂, 100 %-I₃ and 115 %-I₄ of the alfalfa water requirement), in which the irrigation mode was the primary plot and the irrigation volume was the subplot. This study showed that PRDI decreased the alfalfa leaf biomass and increased the alfalfa root, stem biomass and water productivity but that it had no effect on the alfalfa shoot biomass at the end of the vegetative growth period in 2016 and 2017. PRDI increased the C and P concentrations in the roots and the N concentration in the roots, stems and leaves, and it led more C and P to be allocated to the roots and more N to be allocated to the leaves in 2016 and 2017. These results implied that C, N, and P allocation changes in different organs induced by PRDI may be one of the possible ways for alfalfa plants to adapt to the changing environmental conditions caused by PRDI.
Keywords	agricultural land ; alfalfa ; annuals ; biomass ; carbon ; field experimentation ; furrow irrigation ; irrigation rates ; leaves ; nitrogen ; nitrogen content ; perennials ; phosphorus ; rhizosphere ; vegetative growth ; water requirement ; China
Language	English
Dates of publication	2021-0101
Publishing place	Elsevier B.V.
Document type	Article
Note	NAL-AP-2-clean
ZDB-ID	751144-9
ISSN	1873-2283 ; 0378-3774
ISSN (online)	1873-2283
ISSN	0378-3774
DOI	10.1016/j.agwat.2020.106525
Database	NAL-Catalogue (AGRICOLA)

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Article: Plateau pika disturbances alter plant productivity and soil nutrients in alpine meadows of the Qinghai-Tibetan Plateau, China

Pang, Xiao Pan / Zheng Gang Guo

Rangeland journal. 2017, v. 39, no. 2

2017

Abstract: Plateau pika (Ochotona curzoniae) is an endemic mammal in the Qinghai-Tibetan Plateau, and its activities create extensive disturbances on vegetation and soil of alpine meadow. Field surveys at two sites were conducted to determine the effects of plateau ...

Abstract	Plateau pika (Ochotona curzoniae) is an endemic mammal in the Qinghai-Tibetan Plateau, and its activities create extensive disturbances on vegetation and soil of alpine meadow. Field surveys at two sites were conducted to determine the effects of plateau pika disturbances on important soil factors and plant biomass of vegetated land, and their relationships of the same alpine meadow type. Our study showed that plateau pika disturbances significantly increased soil organic carbon, soil total nitrogen, graminoid biomass and the number of plant species, and significantly decreased soil moisture and forb biomass, although they had no significant impacts on soil total phosphorus, soil total potassium and total biomass on vegetated land. Our study further showed that soil organic carbon, soil total nitrogen, graminoid biomass and the number of plant species were much higher at intermediate disturbance intensities than those at low and high disturbance intensities in the disturbed areas, and soil moisture showed a decreasing trend with the increase of disturbance intensity. Plateau pika disturbances altered the contribution of some important soil nutrients and moisture to plant biomass, and had different impact on the best models between plant biomass (total biomass, graminoid biomass and forb biomass) and predominant soil factors. Our results demonstrated that the optimal disturbance intensities of plateau pika were beneficial to alpine meadow. These results highlighted the influence of the presence of plateau pika and its disturbance intensity on key soil nutrients and plant productivity on vegetated land of the same alpine meadow type, which will help us better understand the role of plateau pika in the alpine meadow ecosystem.
Keywords	alpine meadows ; ecosystems ; forbs ; graminoids ; mammals ; models ; nitrogen content ; Ochotona curzoniae ; phosphorus ; phytomass ; potassium ; soil nutrients ; soil organic carbon ; soil water ; China
Language	English
Size	p. 133-144.
Publishing place	CSIRO Publishing
Document type	Article
ZDB-ID	1082716-x
ISSN	1036-9872
ISSN	1036-9872
DOI	10.1071/RJ16093
Database	NAL-Catalogue (AGRICOLA)

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Article: PRDI can maintain aboveground biomass and increase economic benefits in alfalfa through regulating N:P ratios in roots and leaves

Zhang, Jing / Pang, Xiao Pan / Wang, Qian / Yang, Ding / Qiao, Fu Yun / Zhi, Di Gang / Guo, Zheng Gang

Field crops research. 2020 Aug. 15, v. 253

2020

Abstract: N:P ratios is often used to identify nitrogen and/or phosphorus limitation status of crop growth and further provides optimal fertilizer management for crop production. Although partial root-zone drying irrigation (PRDI) has been verified to influence N: ... ...

Abstract	N:P ratios is often used to identify nitrogen and/or phosphorus limitation status of crop growth and further provides optimal fertilizer management for crop production. Although partial root-zone drying irrigation (PRDI) has been verified to influence N:P ratios in nitrophilic and nitrogen-demanding plants, the effect of PRDI on N:P ratios in N-fixing plants is not well documented. This study, conducted in 2014–2016, focused on alfalfa (Medicago sativa L.) to investigate the effect of PRDI on N:P ratios in roots, stems and leaves of N-fixing plant and on the resulting net economics. The field experiment was designed with two irrigation modes: PRDI and conventional furrow irrigation (CFI); and four irrigation volumes: 70 % ETc (evapotranspiration), 85 % ETc, 100 % ETc, 115 % ETc. PRDI maintained aboveground biomass, and it increased both economic benefits and N:P ratios in alfalfa roots, stems and leaves. PRDI transitioned alfalfa plants from N and P co-limitation to P limitation. The N:P ratios in roots were most useful for identifying N and/or P limitation status in alfalfa plants in a PRDI environment. A structural equation model (SEM) showed that irrigation mode indirectly impacted aboveground biomass by positively affecting N:P ratios in roots and leaves, and irrigation volume directly affected aboveground biomass. This study further found that the optimal combination were PRDI with 97 % ETc irrigation volumes in alfalfa production. These results suggest a mechanism for N-fixing plant adaptation to the changing environment caused by PRDI and provide useful information for water and nutrient management in alfalfa production.
Keywords	Medicago sativa ; aboveground biomass ; administrative management ; alfalfa ; crop production ; environment ; evapotranspiration ; fertilizers ; field crops ; field experimentation ; financial economics ; furrow irrigation ; information ; irrigation rates ; leaves ; nitrogen ; nutrient management ; phosphorus ; plant adaptation ; research ; root zone drying ; roots ; stems ; structural equation modeling ; water
Language	English
Dates of publication	2020-0815
Publishing place	Elsevier B.V.
Document type	Article
Note	NAL-light
ZDB-ID	435684-6
ISSN	1872-6852 ; 0378-4290
ISSN (online)	1872-6852
ISSN	0378-4290
DOI	10.1016/j.fcr.2020.107821
Database	NAL-Catalogue (AGRICOLA)

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