Climate-growth pattern of Pinus tabulaeformis plantations and their resilience to drought events in the Loess Plateau

Chen, Meng; Zhang, Xu; Li, Ming; Zhang, Juanjuan; Cao, Yang

doi:10.1016/j.foreco.2021.119642

Cited by 19 publications

(3 citation statements)

References 93 publications

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“…The precipitation is mainly concentrated during July-September, accounting for 60-80% of the annual precipitation. The winter precipitation accounts for approximately 5%, with evaporation is generally being higher than the precipitation [29,30]. The spatial area of soil and water loss is 45.4 × 10 4 km 2 , making it the area with the most severe soil and water loss and the most vulnerable ecology in China and worldwide [31].…”

Section: Study Areamentioning

confidence: 99%

Simulating Ecological Functions of Vegetation Using a Dynamic Vegetation Model

Zhang

Peng

et al. 2022

Forests

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The ecological functions of vegetation play a significant role in improving human well-being. However, previous studies on ecological functions have only used semi-empirical models, which do not include physiological mechanisms and therefore do not accurately estimate the ecological functions of vegetation under scenarios of future climate change. To address this problem, a process-based dynamic vegetation model (LPJ-GUESS) was used to simulate the ecological functions of vegetation under different climate change scenarios in the Loess Plateau (LP), a typical ecologically fragile area in China. The simulated ecological functions were the carbon stock function (CS), soil conservation function (SC), and the water conservation function (WC). The results showed that: (1) Compared with 2001–2020, the proportion of area by shrub and grass vegetation that was predicted to transform into forest accounted for more than 1% of the area in the LP under the SSP119 scenario and 3% of the area in the LP under the SSP585 scenario during 2081–2100, respectively. (2) Compared with 2001–2020, the CS would decrease in the central and south-eastern regions, the SC would decrease in the western regions, and the WC would decrease in the Qilian, Wushaoling, Xinglong and Liupan Mountains during 2081–2100. (3) The relationships and the corresponding regions between the ecological functions of the vegetation and the corresponding regions in the LP would change significantly under climate change from 2001–2020 to 2081–2100.These results indicate that a process-based dynamic vegetation model can capture the changes in the carbon and water fluxes under changes in the climate and CO2 concentration. It can also capture the vegetation succession, changes in ecological functions, and the transformation of functional relationships, which provide information that is conducive to the management and restoration of vegetation on the LP. This study supplies a novel perspective for vegetation management and high-quality development in other ecologically fragile regions worldwide.

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Section: Study Areamentioning

confidence: 99%

Simulating Ecological Functions of Vegetation Using a Dynamic Vegetation Model

Zhang

Peng

et al. 2022

Forests

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“…The water-wind erosion crisscross region is located in the center of the Loess Plateau. The ecological environment of this region is fragile, and re-vegetation is the main way to restore the local ecosystem ( Chen et al, 2021 ). After years of ecological engineering and vegetation restoration and reconstruction, the sea buckthorn forest has become one of the most widely distributed and used tree species in the ecological construction of the region.…”

Section: Introductionmentioning

confidence: 99%

Distribution characteristics of soil microbial communities and their responses to environmental factors in the sea buckthorn forest in the water-wind erosion crisscross region

et al. 2023

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Soil microorganisms are an important part of forest ecosystems, and their community structure and ecological adaptations are important for explaining soil material cycles in the fragile ecological areas. We used high-throughput sequencing technology to examine the species composition and diversity of soil bacterial and fungal communities in sea buckthorn forests at five sites in the water-wind erosion crisscross in northern Shaanxi (about 400 km long). The results are described as follows: (1) The soil bacterial community of the sea buckthorn forest in the study region was mainly dominated by Actinobacteria, Proteobacteria, and Acidobacteria, and the fungi community was mainly dominated by Ascomycota. (2) The coefficient of variation of alpha diversity of microbial communities was higher in the 0–10 cm soil layer than in the 10–20 cm soil layer. (3) Soil electrical conductivity (36.1%), available phosphorous (AP) (21.0%), available potassium (16.2%), total nitrogen (12.7%), and the meteorological factors average annual maximum temperature (33.3%) and average annual temperature (27.1%) were identified as the main drivers of structural changes in the bacterial community. Available potassium (39.4%), soil organic carbon (21.4%), available nitrogen (AN) (13.8%), and the meteorological factors average annual maximum wind speed (38.0%) and average annual temperature (26.8%) were identified as the main drivers of structural changes in the fungal community. The explanation rate of soil factors on changes in bacterial and fungal communities was 26.6 and 12.0%, respectively, whereas that of meteorological factors on changes in bacterial and fungal communities was 1.22 and 1.17%, respectively. The combined explanation rate of environmental factors (soil and meteorological factors) on bacterial and fungal communities was 72.2 and 86.6%, respectively. The results of the study offer valuable insights into the diversity of soil microbial communities in the water-wind erosion crisscross region and the mechanisms underlying their interaction with environmental factors.

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“…Pinus tabuliformis Carr. (a tree) and Sophora viciifolia Hance (a shrub) are both native pioneer species with high drought tolerance and a high survival rate, and they were widely distributed and planted to halt soil erosion on the Loess Plateau [28,29]. In this study, we combined tree-ring α-cellulose δ 13 C and δ 18 O of P. tabuliformis and S. viciifolia growing on the central Loess Plateau to explore species-specific responses to rising C a and drought.…”

Section: Introductionmentioning

confidence: 99%

Strongly Active Responses of Pinus tabuliformis Carr. and Sophora viciifolia Hance to CO2 Enrichment and Drought Revealed by Tree-Ring Isotopes on the Central China Loess Plateau

Liu

et al. 2022

Forests

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Understanding the water-use strategy of human-planted species used in response to climate change is essential to optimize afforestation programs in dry regions. Since 2000, trees on the central Loess Plateau have experienced a shift from strengthening drought to weakening drought. In this study, we combined tree-ring δ13C and δ18O records from Pinus tabuliformis (syn. tabulaeformis) Carr. (a tree) and Sophora viciifolia Hance (a shrub) on the central Loess Plateau to investigate species-specific responses to rising atmospheric CO2 (Ca) and drought. We found summer relative humidity controlled the fractionation of tree-ring δ18O, but the magnitude of the climate influence on δ13C differed between the species. The intrinsic water-use efficiency (iWUE) trends of both species suggested a strongly active response to maintain constant intercellular CO2 concentrations as Ca rose. The tree-ring δ13C and δ18O of both species using first-difference data were significantly and positively correlated, with stronger relationships for the shrub. This indicated the dominant regulation of iWUE by stomatal conductance in both species, but with greater stomatal control for the shrub. Moreover, the higher mean iWUE value of S. viciifolia indicated a more conservative water-use strategy than P. tabuliformis. Based on our commonality analysis, the main driver of the increased iWUE was the joint effect of Ca and vapor-pressure deficit (25.51%) for the tree, while it was the joint effect of Ca and the self-calibrated Palmer drought severity index (39.13%) for the shrub. These results suggest S. viciifolia will be more drought-tolerant than P. tabuliformis and as Ca continually rises, we should focus more on the effects of soil drought than atmospheric drought on the water-use strategy of S. viciifolia.

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Climate-growth pattern of Pinus tabulaeformis plantations and their resilience to drought events in the Loess Plateau

Cited by 19 publications

References 93 publications

Simulating Ecological Functions of Vegetation Using a Dynamic Vegetation Model

Simulating Ecological Functions of Vegetation Using a Dynamic Vegetation Model

Distribution characteristics of soil microbial communities and their responses to environmental factors in the sea buckthorn forest in the water-wind erosion crisscross region

Strongly Active Responses of Pinus tabuliformis Carr. and Sophora viciifolia Hance to CO2 Enrichment and Drought Revealed by Tree-Ring Isotopes on the Central China Loess Plateau

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