Clipping alters the response of biomass production to experimental warming: A case study in an alpine meadow on the Tibetan Plateau, China

Fu, Gang; Sun, Wei; Yu, Chengqun; Zhang, Xianzhou; Shen, Zhenxi; Li, Yunlong; Yang, Peiguo; Zhou, Nan

doi:10.1007/s11629-014-3035-z

Cited by 17 publications

(9 citation statements)

References 27 publications

(65 reference statements)

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“…Our findings suggested that the response magnitudes of the NDVI, GNDVI, SAVI, AGB and GPP to clipping were stronger than those to experimental warming (Table 1 ). Our previous study, which was conducted in the same alpine meadow sites, also implied that clipping had stronger effects on GPP and AGB in 2012 than did experimental warming 41 . Similarly, clipping had stronger effects on AGB than did experimental warming in an alpine meadow in the Yangtze River Source Region, inland of the Tibetan Plateau 34 .…”

Section: Discussionmentioning

confidence: 79%

“…There were inconsistent interannual variations in growing season precipitation and productivity in the current study. Experimental warming significantly reduced AGB and GPP in 2012 but not 2013, 2014 and 2015 at site A 41 ; significantly reduced GPP in 2013 but not 2012, 2014 and 2015 at site B; and significantly increased the SAVI in 2013 but not 2012, 2014 and 2015 at site C (Figs 1 and 2 ). Likewise, experimental warming did not significantly alter AGB in 1998, but it significantly reduced AGB in 1999–2001 in an alpine meadow at the Haibei station on the Tibetan Plateau 31 .…”

Section: Discussionmentioning

confidence: 87%

“…Our findings suggested that clipping significantly or marginally significantly reduced vegetation biomass and production across all three growing seasons in 2013–2015 (Table 1 , Figs 1 and 2 ). Our previous study, which was conducted in the same alpine meadow sites, demonstrated that clipping significantly reduced AGB and GPP in 2012 41 . Similarly, heavy grazing resulted in a decrease in AGB and caused degradation from 2006 to 2010 in an alpine meadow in the Haibei region 35 .…”

Section: Discussionmentioning

confidence: 88%

“…These findings were quite consistent with the interannual variations in growing season precipitation. In detail, compared to the mean growing season precipitation from 1963 to 2015 (398.7 mm), the growing season precipitation was increased in 2014 (437.3 mm) and decreased in 2012 (312.8 mm), 2013 (344.7 mm) and 2015 (300.2 mm) 41 . Likewise, experimental warming significantly increased GPP in 2012 (wet year) but not 2013 (dry year) in an alpine meadow in the region of the Yangtze River source on the Tibetan Plateau 34 .…”

Section: Discussionmentioning

confidence: 91%

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Clipping has stronger effects on plant production than does warming in three alpine meadow sites on the Northern Tibetan Plateau

Shen

2017

Sci Rep

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The relative effects of warming and clipping on vegetation growth are not fully understood. Therefore, we compared the relative effects of experimental warming and clipping on the normalised difference vegetation index (NDVI), green NDVI (GNDVI), soil-adjusted vegetation index (SAVI), aboveground biomass (AGB) and gross primary production (GPP) in three alpine meadow sites (A, B and C) on the Northern Tibetan Plateau from 2013 to 2015. There were no obvious effects of experimental warming on the NDVI, GNDVI, SAVI, AGB and GPP at the three sites, which were most likely attributed to experimental warming-induced warming and drying conditions. In contrast, clipping significantly decreased the NDVI, SAVI and AGB by 27.8%, 31.3% and 18.2% at site A, by 27.1%, 31.8% and 27.7% at site B, and by 12.3%, 15.1% and 17.6% at site C, respectively. Clipping also significantly reduced the GNDVI and GPP by 11.1% and 28.2% at site A and by 18.9% and 33.7% at site B, respectively. Clipping marginally decreased the GNDVI by 8.7% (p = 0.060) and GPP (p = 0.082) by 14.4% at site C. Therefore, clipping had stronger effects on vegetation growth than did warming in the three alpine meadow sites on the Tibetan Plateau.

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Section: Discussionmentioning

confidence: 79%

Section: Discussionmentioning

confidence: 87%

Section: Discussionmentioning

confidence: 88%

Section: Discussionmentioning

confidence: 91%

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Clipping has stronger effects on plant production than does warming in three alpine meadow sites on the Northern Tibetan Plateau

Shen

2017

Sci Rep

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“…AGB was estimated using a non-destructive approach which was based on a regression equation (AGB = 10.33exp 3.28NDVI , R 2 = 0.64, p < 0.001, n = 135) [47]. …”

Section: Methodsmentioning

confidence: 99%

Environmental Humidity Regulates Effects of Experimental Warming on Vegetation Index and Biomass Production in an Alpine Meadow of the Northern Tibet

Shen

2016

PLoS ONE

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Uncertainty about responses of vegetation index, aboveground biomass (AGB) and gross primary production (GPP) limits our ability to predict how climatic warming will influence plant growth in alpine regions. A field warming experiment was conducted in an alpine meadow at a low (4313 m), mid- (4513 m) and high elevation (4693 m) in the Northern Tibet since May 2010. Growing season vapor pressure deficit (VPD), soil temperature (Ts) and air temperature (Ta) decreased with increasing elevation, while growing season precipitation, soil moisture (SM), normalized difference vegetation index (NDVI), soil adjusted vegetation index (SAVI), AGB and GPP increased with increasing elevation. The growing season Ta, Ts and VPD in 2015 was greater than that in 2014, while the growing season precipitation, SM, NDVI, SAVI, AGB and GPP in 2015 was lower than that in 2014, respectively. Compared to the mean air temperature and precipitation during the growing season in 1963–2015, it was a warmer and wetter year in 2014 and a warmer and drier year in 2015. Experimental warming increased growing season Ts, Ta,VPD, but decreased growing season SM in 2014–2015 at all the three elevations. Experimental warming only reduced growing season NDVI, SAVI, AGB and GPP at the low elevation in 2015. Growing season NDVI, SAVI, AGB and GPP increased with increasing SM and precipitation, but decreased with increasing VPD, indicating vegetation index and biomass production increased with environmental humidity. The VPD explained more variation of growing season NDVI, SAVI, AGB and GPP compared to Ts, Ta and SM at all the three elevations. Therefore, environmental humidity regulated the effect of experimental warming on vegetation index and biomass production in alpine meadows on the Tibetan Plateau.

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Optimizing management to conserve plant diversity and soil carbon stock of semi-arid grasslands on the Loess Plateau

Chai

Chang

et al. 2019

CATENA

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Clipping alters the response of biomass production to experimental warming: A case study in an alpine meadow on the Tibetan Plateau, China

Abstract: Abstract

Cited by 17 publications

References 27 publications

Clipping has stronger effects on plant production than does warming in three alpine meadow sites on the Northern Tibetan Plateau

Clipping has stronger effects on plant production than does warming in three alpine meadow sites on the Northern Tibetan Plateau

Environmental Humidity Regulates Effects of Experimental Warming on Vegetation Index and Biomass Production in an Alpine Meadow of the Northern Tibet

Optimizing management to conserve plant diversity and soil carbon stock of semi-arid grasslands on the Loess Plateau

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