Evaluating the effectiveness of Shennongjia National Nature Reserve based on the dynamics of forest carbon pools

Deng, Shuyu; Dong, Xiangzhong; Ma, Mingzhe; Zang, Zengliang; Xu, Wei; Zhao, Changming; Xie, Zongqiang; Shen, Guozhen

doi:10.17520/biods.2017240

Cited by 2 publications

(1 citation statement)

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“…Liu et al () explored the nutrient return of litter in deciduous broad‐leaved forests and evergreen coniferous forests in Shennongjia, and found that total nutrient return of litter of the deciduous broad‐leaved forest (303.3 kg hm −2 a −1 ) was significantly higher than that of the coniferous forest (244.0 kg hm −2 ·a −1 ). Deng et al () estimated forest carbon density of EBF, MF, DBF, and CF, and found that aboveground carbon in DBF (145.9 t C·ha −1 ) were significant higher than that in CF (128.0 t C·ha −1 ; Table ). This indicated that the broad‐leaved forests had higher concentration of substrate and higher microbial activity, which lead to a higher soil respiration rate (Wang et al, ).…”

Section: Discussionmentioning

confidence: 99%

Soil respiration of four forests along elevation gradient in northern subtropical China

Zang

Xie

et al. 2019

Ecology and Evolution

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Background and aimsSoil respiration is the second‐largest terrestrial carbon (C) flux, and soil temperature and soil moisture are the main drivers of temporal variation in soil respiration and its components. Here, we quantified the contribution of soil temperature, soil moisture, and their intersection on the variation in soil respiration and its components of the evergreen broad‐leaved forests (EBF), mixed evergreen and deciduous broad‐leaved forests (MF), deciduous broad‐leaved forests (DBF), and subalpine coniferous forests (CF) along an elevation gradient.MethodsWe measured soil respiration of four types of forests along the elevation gradient in Shennongjia, Hubei China based on the trenching experiments. We parameterized the relationships between soil respiration and soil temperature, soil moisture, and quantified the intersection of temperature and moisture on soil respiration and its components.ResultsTotal soil respiration (R S), heterotrophic respiration (R H), and autotrophic respiration (R A) were significantly correlated with soil temperature in all four forests. The Q 10 value of soil respiration significantly differed among the four types of forest, and the Q 10 was 3.06 for EBF, 3.75 for MF, 4.05 for DBF, and 4.49 for CF, respectively. The soil temperature explained 62%–81% of the variation in respiration, while soil temperature and soil moisture together explained 91%–97% of soil respiration variation for the four types of forests. The variation from the intersection of soil temperature and moisture were 12.1%–25.0% in RS, 1.0%–7.0% in R H, and 17.1%–19.6% in R A, respectively.ConclusionsOur results show that the temperature sensitivity (Q 10) of soil respiration increased with elevation. The intersection between soil temperature and soil moisture had strong effects on soil respiration, especially in R H. We demonstrated that the intersection effects between soil temperature and soil moisture on soil respiration were essential to understand the response of soil respiration and its components to climate change.

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Section: Discussionmentioning

confidence: 99%