Effect of the humidity/aridity gradient on the ecological stoichiometry of soil and leaves in Xishuangbanna tropical rainforest

Tongping, 卢同平 Lu; Yanfei, 王艳飞 Wang; Liming, 王黎明 Wang; Yongjing, 林永静 Lin; Mengjuan, 武梦娟 Wu; Wenxiang, 张文翔 Zhang; Jie, 牛洁 Niu

doi:10.5846/stxb201705020797

Cited by 2 publications

(3 citation statements)

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“…S12). In addition, N deposition at DHM (38.4 kg N ha −1 yr −1 ) (Zhou & Yan, 2001) is much higher than at XSBN (8.9 kg N ha −1 yr −1 ) (Lu et al ., 2018). The higher AP activities at DHM could also be partly attributed to high N deposition there as high inorganic N input often stimulates AP activities (Treseder & Vitousek, 2001).…”

Section: Discussionmentioning

confidence: 99%

Foliar nutrient resorption stoichiometry and microbial phosphatase catalytic efficiency together alleviate the relative phosphorus limitation in forest ecosystems

Peng

Guo

et al. 2023

New Phytologist

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Summary Understanding how plants adapt to spatially heterogeneous phosphorus (P) supply is important to elucidate the effect of environmental changes on ecosystem productivity. Plant P supply is concurrently controlled by plant internal conservation and external acquisition. However, it is unclear how climate, soil, and microbes influence the contributions and interactions of the internal and external pathways for plant P supply. Here, we measured P and nitrogen (N) resorption efficiency, litter and soil acid phosphatase (AP) catalytic parameters (Vmax(s) and Km), and soil physicochemical properties at four sites spanning from cold temperate to tropical forests. We found that the relative P limitation to plants was generally higher in tropical forests than temperate forests, but varied greatly among species and within sites. In P‐impoverished habitats, plants resorbed more P than N during litterfall to maintain their N : P stoichiometric balance. In addition, once ecosystems shifted from N‐limited to P‐limited, litter‐ and soil‐specific AP catalytic efficiency (Vmax(s)/Km) increased rapidly, thereby enhancing organic P mineralization. Our findings suggested that ecosystems develop a coupled aboveground–belowground strategy to maintain P supply and N : P stoichiometric balance under P‐limitation. We also highlighted that N cycle moderates P cycles and together shape plant P acquisition in forest ecosystems.

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Section: Discussionmentioning

confidence: 99%

Foliar nutrient resorption stoichiometry and microbial phosphatase catalytic efficiency together alleviate the relative phosphorus limitation in forest ecosystems

Peng

Guo

et al. 2023

New Phytologist

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“…The XTR is the highest latitude area in the world, and its ecosystem is mainly composed of tropical seasonal rainforest and tropical mountain rainforest; soil of distribution is mainly lateritic red soil (Fang & Sha 2006). The soil N and P content are 1.87 and 0.56 mg•g -1 (Lu et al 2018). The dominant plant species of the tropical seasonal rainforest are Pometia pinnata, Terminalia myriocarpa and Parashorea chinensis, and…”

Section: Study Areamentioning

confidence: 99%

“…The objective of the study is to simulate the effect of atmospheric N deposition on tropical rainforest ecosystem, with reference to the real atmospheric N deposition of 9.8 kg N ha -1 in the area (Lu et al 2018). Therefore, four levels of N addition were applied in the four blocks of XTR during the plant growing season in July 2016 and 2017:…”

Section: Plot Layout and Samplingmentioning

confidence: 99%

Effects of Nitrogen Addition on the Characteristics of Foliar and Soil Ecological Stoichiometry in Xishuangbanna Tropical Rainforest, Southwest China

Niu¹,

Lu²,

Lin³

et al. 2020

JTFS

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Xishaungbanna tropical rainforest (XTR) is the most intact tropical rainforest in China, and is the only oasis at around 21 degrees north latitude. The purpose of this study was to explore the effects of nitrogen (N) exogenous input on ecological stoichiometry of soil and foliar, and to assess the impact on the ecosystem of XTR. The results showed that the N content and nitrogen:phosphorus (N:P) in soil of XTR were increased significantly in different levels of N addition, especially in the low N addition. The P content in soil and leaves was generally reduced or flat compared with those before N addition. Meanwhile, N:P of soil had a significant relationship with the N and P content after N addition. However, the correlated coefficient between N:P and N, P content of plant leaves was significantly reduced by the N addition, respectively. This indicated that the impact of N deposition on the XTR ecosystem is very significant. Therefore, increase of N deposition may intensify the limiting effect of P in ecosystems, and aggravate the patchiness and degradation of XTR ecosystem due to global warming.

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Effect of the humidity/aridity gradient on the ecological stoichiometry of soil and leaves in Xishuangbanna tropical rainforest

Cited by 2 publications

References 0 publications

Foliar nutrient resorption stoichiometry and microbial phosphatase catalytic efficiency together alleviate the relative phosphorus limitation in forest ecosystems

Foliar nutrient resorption stoichiometry and microbial phosphatase catalytic efficiency together alleviate the relative phosphorus limitation in forest ecosystems

Effects of Nitrogen Addition on the Characteristics of Foliar and Soil Ecological Stoichiometry in Xishuangbanna Tropical Rainforest, Southwest China

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