Response of density-related fine root production to soil and leaf traits in coniferous and broad-leaved plantations in the semiarid loess hilly region of China

Sun, Mingdong; Zhai, Bo-Chao; Chen, Qiu‐Wen; Li, Guoqing; Du, Sheng

doi:10.1007/s11676-021-01358-0

Cited by 6 publications

(5 citation statements)

References 80 publications

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“…This indicates that the ecological stoichiometric characteristics of desert saline shrub leaves are not directly determined by the characteristics of soil nutrient contents, but are related to their own genetic characteristics, which reflects the unique adaptation mechanism of different desert halophyte shrubs to habitats [50], consistent with the results of Luo et al (2017) [51] and Song et al (2020) [52]. Under soil moisture-and nutrient-scarce conditions, Xinjiang desert halophyte shrubs have formed their own unique stoichiometric characteristics and physiological ecology, reflecting the relatively stable adaptability of desert saline shrubs to extreme environments [16]. The environmental indicators selected in this study are limited, and more environmental indicators will be combined in future studies to conduct a comprehensive analysis of the relationship between halophytes and environmental factors.…”

Section: Response Of Desert Halophyte Shrubs' Stoichiometry To Soil F...supporting

confidence: 83%

“…Secretohalophytes and pseudohalophytes had the highest C/N and C/P ratios, and they had higher carbon sequestration advantages in nutrient-poor habitats than euhalophytes [13]. Overall, C/N and C/P were high, which can be attributed to the extreme drought, high temperature, and strong evaporation in the study area [16,30]. To resist harsh environments, plants reduce their growth rate, resulting in relatively high C/N and C/P ratios in the leaves [32].…”

Section: Relationship Between Ecological Stoichiometric Characteristi...mentioning

confidence: 87%

“…However, according to some studies, the leaf stoichiometric characteristics of desert plants are not directly determined by soil nutrient content but are more affected by the genetic characteristics of plants [14,15]. The C, N, and P stoichiometries of plant leaves in different functional groups vary to different degrees; for example, succulent woody plants have higher N contents and lower C contents than herbaceous plants and non-succulent woody plants, reflecting the unique adaptability of desert plants to extreme habitats [16].…”

Section: Introductionmentioning

confidence: 99%

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Leaf Stoichiometry of Halophyte Shrubs and Its Relationship with Soil Factors in the Xinjiang Desert

Luo

Lian

Gong

et al. 2022

Forests

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Desert halophytes are a special plant group widely distributed in desert ecosystems. Studying their ecological stoichiometric characteristics is helpful for understanding their nutrient utilization characteristics and survival strategies. In this study, three functional groups of halophyte shrubs (euhalophytes, pseudohalophytes, and secretohalophytes) were studied in the Xinjiang desert, and the ecological stoichiometric characteristics of their leaves and their relationships with soil factors were evaluated. The results showed that the C content in secretohalophytes (442.27 ± 3.08 mg g−1) was significantly higher than that in the other functional groups (p < 0.05). The N and P contents in euhalophytes (22.17 ± 0.49 mg g−1 and 1.35 ± 0.04 mg g−1, respectively) were significantly higher than those in halophytes (p < 0.05). The N/P results showed that the growth rates of euhalophytes and pseudohalophytes were more susceptible to P limitation, whereas that of secretohalophytes was more susceptible to both N and P limitations, indicating that there were differences in nutrient characteristics among different functional groups. The results of the redundancy analysis showed that the leaf C, N, and P contents of euhalophytes were most affected by electrical conductivity (EC), whereas those of pseudohalophytes and secretohalophytes were most affected by the soil C content, indicating that different functional groups of halophyte shrubs had different responses to soil factors. The results of this study revealed the nutrient utilization characteristics of different functional groups of halophyte shrubs in the Xinjiang desert and their response and adaptation mechanisms to soil factors, thereby providing a basis for desert ecosystem management.

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Section: Response Of Desert Halophyte Shrubs' Stoichiometry To Soil F...supporting

confidence: 83%

Section: Relationship Between Ecological Stoichiometric Characteristi...mentioning

confidence: 87%

Section: Introductionmentioning

confidence: 99%

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Leaf Stoichiometry of Halophyte Shrubs and Its Relationship with Soil Factors in the Xinjiang Desert

Luo

Lian

Gong

et al. 2022

Forests

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“…Moreover, increased surface litter buildup over time can lead to greater OM and/or TN levels at the 0-10 cm soil depth, regardless of thinning intensity. A study also found that soil nutrient status (e.g., N) was related to fine root necromass in pine plantations [53]. The fine root distribution pattern is controlled by soil resource availability, with a positive correlation reported with soil organic carbon [54].…”

Section: Vertical Distribution Patterns Of Fine Root Biomass and Necr...mentioning

confidence: 93%

Effects of Thinning Intensity on Litterfall Production, Soil Chemical Properties, and Fine Root Distribution in Pinus koraiensis Plantation in Republic of Korea

Han,

An,

Hernandez

et al. 2023

Plants

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It is crucial to evaluate the effects of thinning on litterfall production, soil chemical properties, and fine root dynamics when implementing thinning as a silvilcultural technique to enhance tree growth and timber yield in Pinus koraiensis plantations. Thus, we determined the 10-year effects (2007–2017) of different thinning intensities on litterfall production, soil chemical properties, and fine root biomass and necromass within a P. koraiensis plantation in South Korea. The soil chemical parameters and fine root biomass and necromass were also compared across three soil depths (0–10, 10–20, and 20–30 cm). Three thinning treatments were employed: no thinning (CON), light thinning (32% removed, LT), and heavy thinning (64% removed, HT). Results revealed that litterfall was consistent across all thinning treatments, but broadleaf species had considerably higher litterfall production at HT stands than at CON/LT stands. Soil chemical properties, except exchangeable K+, were generally lower at LT stands, particularly at a depth of 20–30 cm soil. After ten years, there was a decrease in fine root biomass and necromass with increasing soil depth. Over 80% of fine roots were found in the upper layer (0–20 cm), while very fine roots (0–1 mm) consisted mainly of 47% pine and 53% other species and were concentrated in the 0–10 cm soil depth in HT. In conclusion, different thinning intensities had diverse effects on the parameters measured within the plantation. Future studies can explore how the effects of thinning intensities on litterfall production, soil chemistry, and fine root dynamics affect species diversity, carbon storage, and understory vegetation in P. koraiensis plantations.

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“…Before the "Grain for Green" project, there should be little difference in soil nutrients between the plantations due to the long-term cultivation of the cropland under similar fertilization management [51]. After replacing the cropland, the forest vegetation would change soil nutrient types and distribution gradually by changing the decomposition input of the litter, fine root yield and turnover rate [66,67]. Disparities in soil nutrients between different stand densities may gradually develop.…”

Section: Effect Of Stand Density On Soil Nutrients In These Plantatio...mentioning

confidence: 99%

Effects of Stand Density on Growth, Soil Water Content and Nutrients in Black Locust Plantations in the Semiarid Loess Hilly Region

Zhai,

Sun,

Shen

et al. 2023

Sustainability

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Stand density is an important index of forest structure, which strongly affects local environments and functions in the forest. Many black locust (Robinia pseudoacacia) plantations with low quality in the Loess hilly region are assumed to be caused by inappropriate stand density. In this study, the growth status, spatio-temporal variations in soil water and nutrient conditions were investigated in the nearly middle-aged plantations with three density classes. The proportion of stunted trees increased with the increase in density class. The stands of <2500 stems ha−1 not only had the distribution peak of diameter at breast height (DBH) being at a larger diameter class, but also showed relatively rapid growths in diameter and biomass per tree. However, stand density did not show a significant effect on the growth rate of both mean tree height and biomass density. The maximum biomass density and relatively high soil NH4+-N content appeared in the density class of 2500–3500 stems ha−1. The temporal stability of soil water content (SWC) on a seasonal scale increased with the deepening of the soil layer, and spatio-temporal variations in the SWC remained relatively stable in the deep layer (200–300 cm). While the infiltration depth after rainfall was rainfall-amount-dependent, the depth of effective replenishment reduced with the density class increasing. The average SWC and its temporal stability in 0–300 cm of soil layer are the best in a stand density of less than 2500 stems ha−1. No significant differences were observed among the stand density classes in the contents of total nitrogen, total phosphorus, NO3−-N, and available phosphorus in soils of these nearly middle-aged plantations that have experienced similar management history since the afforestation of abandoned cropland. Overall, the stand condition of density class I is superior at present. But thinning of stand density may be needed to maintain the best stand conditions in the future, with the stand age increasing. The results contribute to further understanding of the relations between density gradient and multiple variables in the plantations, which offer a reference for the forest management and sustainable development of ecosystems in the semiarid region of the Loess Plateau.

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Response of density-related fine root production to soil and leaf traits in coniferous and broad-leaved plantations in the semiarid loess hilly region of China

Cited by 6 publications

References 80 publications

Leaf Stoichiometry of Halophyte Shrubs and Its Relationship with Soil Factors in the Xinjiang Desert

Leaf Stoichiometry of Halophyte Shrubs and Its Relationship with Soil Factors in the Xinjiang Desert

Effects of Thinning Intensity on Litterfall Production, Soil Chemical Properties, and Fine Root Distribution in Pinus koraiensis Plantation in Republic of Korea

Effects of Stand Density on Growth, Soil Water Content and Nutrients in Black Locust Plantations in the Semiarid Loess Hilly Region

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