Soil carbon and nitrogen pools and their relationship to plant and soil dynamics of degraded and artificially restored grasslands of the Qinghai–Tibetan Plateau

Li, Yuanyuan; Dong, Shikui; Wen, Li; Wang, Xue-Xia; Wu, Yu

doi:10.1016/j.geoderma.2013.08.022

Cited by 151 publications

(107 citation statements)

References 45 publications

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“…Then, C fixes in a stable SOC pool or releases back into the atmosphere (Post and Kwon, 2000). Therefore, studying the C sequestration in grassland ecosystems can help to identify the magnitude of global C sinks and sources (Li et al, 2014). Our results showed that leguminous grassland had greater SOC contents and storage efficiency than gramineous grassland.…”

Section: Discussionmentioning

confidence: 73%

“…Establishing artificial grassland is therefore an 84 Y. Liu et al: Leguminous species sequester more carbon than gramineous species effective method to restore vegetation and improve soil fertility by accumulation of SOC Wu et al, 2010;Li et al, 2014). Vegetation degradation and exponential population growth have caused massive amounts of soil and water to be lost.…”

Section: Introductionmentioning

confidence: 99%

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Leguminous species sequester more carbon than gramineous species in cultivated grasslands of a semi-arid area

Liu

Tian²,

Jia

et al. 2017

Solid Earth

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Abstract. The establishment of grasslands on abandoned cropland has been proposed as an effective method to mitigate climate change. In this study, five cultivated grasslands (three leguminous species and two gramineous species), one abandoned cropland, and one natural grassland were studied to examine how soil organic carbon (SOC) sequestration rate and sequestration efficiency change in a semi-arid area in China. Our results showed that leguminous grasslands had greater total biomass (above-and belowground biomass), SOC storage, SOC sequestration rate, and efficiency than gramineous grasslands, abandoned cropland, and natural grassland during the experimental period. The largest soil carbon (C) accumulation in leguminous grassland was mainly attributed to the capacity to incorporate C and the higher biomass production. Leguminous grasslands accumulated more SOC than gramineous grasslands by 0.64 Mg C ha −1 yr −1 . The average SOC sequestration efficiency in leguminous grassland (1.00) was about 2 times greater than gramineous grassland (0.34). The results indicate that cultivated leguminous grassland sequestered more SOC with higher SOC sequestration efficiency than cultivated gramineous grassland in arid and semi-arid areas. Our results provide a reference for ecological management in arid and semi-arid areas.

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Section: Discussionmentioning

confidence: 73%

Section: Introductionmentioning

confidence: 99%

Leguminous species sequester more carbon than gramineous species in cultivated grasslands of a semi-arid area

Liu

Tian²,

Jia

et al. 2017

Solid Earth

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“…The litter enters the soil and is decomposed by nitrogen-fixing bacteria and other microorganisms in the rhizosphere, thereby increasing the soil organic matter content. Vegetation mainly affects the soil OC content through the storage, composition and stability of OC by altering the quantity and quality of litter and its environmental conditions [24] . The accumulation and depletion level of soil nitrogen depends on the accumulation and decomposition of soil OC [25] .…”

Section: Discussionmentioning

confidence: 99%

Characteristics of soil nutrients and their relationship with soil microbial properties in Artemisia sacrorum communities in the loess hilly region

Song

Liu

et al. 2018

International Journal of Agricultural and Biological Engineering

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“…Wu et al (2011) and Li et al (2014) demonstrated significant positive correlations between belowground biomass and soil nutrient contents in alpine meadows on the Tibetan Plateau. Unfortunately, accurate quantification of belowground biomass has not been sufficiently studied in this region (Chen et al, 2015;Lu et al, 2015).…”

mentioning

confidence: 94%

“…Grassland ecosystems occupy approximately 25% of the global land surface area and have 10% soil carbon stock of the global terrestrial biosphere (Hui and Jackson, 2006;Sun et al, 2013a), and they also have considerable effects on the global carbon cycle. The carbon pool of the grasslands on the Tibetan Plateau is considered as one of the most important carbon pools in the world (Wen et al, 2013a, b;Li et al, 2014) and plays a key role in the terrestrial carbon cycle (Li et al, 2013). The three rivers, i.e.…”

mentioning

confidence: 99%

Effects of soil nutrients and climate factors on belowground biomass in an alpine meadow in the source region of the Yangtze-Yellow rivers, Tibetan Plateau of China

Wang

Sun

et al. 2016

J. Arid Land

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Improving our knowledge of the effects of environmental factors (e.g. soil conditions, precipitation and temperature) on belowground biomass in an alpine grassland is essential for understanding the consequences of carbon storage in this biome. The object of this study is to investigate the relative importance of soil nutrients and climate factors on belowground biomass in an alpine meadow in the source region of the Yangtze and Yellow rivers, Tibetan Plateau. Soil organic carbon (SOC), total nitrogen (TN) and total phosphorous (TP) contents and belowground biomass were measured at 22 sampling sites across an alpine meadow on the Tibetan Plateau. We analyzed the data by using the redundancy analysis to determine the main environmental factors affecting the belowground biomass and the contribution of each factor. The results showed that SOC, TN and TP were the main factors that influenced belowground biomass, and the contribution of SOC, TN and TP on biomass was in the range of 47.87%-72.06% at soil depths of 0-30 cm. Moreover, the combined contribution of annual mean temperature (AMT) and mean annual precipitation (MAP) on belowground biomass ranged from 0.92% to 4.10%. A potential mechanism for the differences in belowground biomass was caused by the variations in soil nitrogen and phosphorous, which were coupled with SOC. A significant correlation was observed between MAP and soil nutrients (SOC, TN and TP) at the soil depth of 0-10 cm (P<0.05). We concluded that precipitation is an important driving force in regulating ecosystem functioning as reflected in variations of soil nutrients (SOC, TN and TP) and dynamics of belowground biomass in alpine grassland ecosystems.Keywords: belowground biomass; soil organic carbon; soil nitrogen and phosphorus; climate factor; alpine meadow; Tibetan Plateau Citation: WANG Haiming, SUN Jian, LI Weipeng, WU Jianbo, CHEN Youjun, LIU Wenhui. 2016. Effects of soil nutrients and climate factors on belowground biomass in an alpine meadow in the source region of the Yangtze-Yellow rivers,

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Soil carbon and nitrogen pools and their relationship to plant and soil dynamics of degraded and artificially restored grasslands of the Qinghai–Tibetan Plateau

Cited by 151 publications

References 45 publications

Leguminous species sequester more carbon than gramineous species in cultivated grasslands of a semi-arid area

Leguminous species sequester more carbon than gramineous species in cultivated grasslands of a semi-arid area

Characteristics of soil nutrients and their relationship with soil microbial properties in Artemisia sacrorum communities in the loess hilly region

Effects of soil nutrients and climate factors on belowground biomass in an alpine meadow in the source region of the Yangtze-Yellow rivers, Tibetan Plateau of China

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