Effect of leaf habit and soil type on nutrient resorption and conservation in woody species of a dry tropical environment

2001 ◽  
Vol 79 (9) ◽  
pp. 1066-1075 ◽  
Author(s):  
C B Lal ◽  
C Annapurna ◽  
A S Raghubanshi ◽  
J S Singh
Keyword(s):  
Woody Species ◽  
Leaf Traits ◽  
Nutrient Resorption ◽  
Nutrient Concentrations ◽  
Leaf Chemistry ◽  
Resorption Efficiency ◽  
Nutrient Pools ◽  
Mature Leaves ◽  
Leaf Habit ◽  
Leaf N

We examined 90 dry tropical tree species growing on contrasting soil types (relatively infertile Ultisol and more fertile Inceptisol) for leaf traits such as leaf habit, specific leaf mass (SLM, leaf dry mass per leaf area), leaf chemistry (nutrient concentrations and C/N ratios), and nutrient resorption. Across the species, SLM ranged from 4.06 to 15.74 mg·cm–2 in mature leaves and from 2.60 to 15.12 mg·cm–2 in senesced leaves. Mature leaf N and P concentrations varied from 0.86% to 4.11% and 0.13% to 0.21%, respectively. Senesced leaf N concentrations varied from 0.49% to 1.90% and P from 0.04% to 0.47%. Resorption efficiencies varied from 26% to 83% (mean = 58.32% ± 1.20%) for N and from 16% to 80% (mean = 49.57% ± 1.48%) for P indicating that the woody species of dry tropical environments resorbed different nutrients in substantial amounts to support new growth. Deciduous species had greater resorbed nutrient pools and resorption efficiencies than evergreen species. Compared with the nutrient-rich environment, species from the nutrient-poor environment had a lower resorbed P pool and lower resorption efficiencies for N and P, but had similar N and P concentrations in mature leaves. Resorption efficiencies for C, N, and P were generally correlated, suggesting that the resorbed C pool acted as a vehicle for mobilizing nutrients, especially N. Species with a low or high C/N ratio in senesced leaf and a low or high N resorption efficiency occurred in both nutrient-poor and nutrient-rich environments, as well as among deciduous and evergreen leaf habits, indicating individualistic adaptations to optimize the efficiency of nutrient resource use and conservation of the dry tropical woody vegetation.Key words: leaf chemistry, leaf traits, resorption efficiency, resorbed nutrient pools, substrate-quality stability.

Nutrient resorption and stoichiometric responses of poplar (Populus deltoids) plantations to N addition in a coastal region of eastern China

2021 ◽  
Author(s):  
Dalong Jiang ◽  
Qian Li ◽  
Qinghong Geng ◽  
Menghua Zhang ◽  
Chonghua Xu ◽  
...  
Keyword(s):  
Eastern China ◽  
Coastal Region ◽  
Nutrient Resorption ◽  
Green Leaf ◽  
Nutrient Concentrations ◽  
N Addition ◽  
Resorption Efficiency ◽  
Nutrient Resorption Efficiency ◽  
Poplar Plantations ◽  
Populus Deltoids

Abstract Aims Leaf nutrient resorption is sensitive to changes in soil nutrients. However, the effects of N deposition on nutrient resorption efficiency (NuRE) in plant macro-nutrients remain unclear. Poplar (Populus deltoids) is one of the most extensively cultivated hardwood species worldwide. We explored general patterns and dominant drivers of NuRE and stoichiometry of poplar plantations in response to N addition. Methods We conducted a 4-year N-addition experiment to explore NuRE and stoichiometric responses to N addition in two poplar (Populus deltoids) plantations (8- and 12-year-old stands) in a coastal region of eastern China. We measured soil and foliar (green and senesced leaves) concentrations of nitrogen (N), phosphorus (P), potassium (K), calcium (Ca), and magnesium (Mg) for a series of N addition treatments including N0 (0 kg N ha ‒1 yr ‒1), N1 (50 kg N ha ‒1 yr ‒1), N2 (100 kg N ha ‒1 yr ‒1), N3 (150 kg N ha ‒1 yr ‒1), and N4 (300 kg N ha ‒1 yr ‒1). Important Findings Consistent for (both) 8- and 12-year-old stands, N addition did not affect the NuRE and stoichiometry (with the exception of CaRE and CaRE:MgRE ratio). NRE-PRE scaling slopes were consistently less than 1.0 under N addition. These results suggest that NRE generally decouples from PRE within each N treatment. Moreover, these results point to robust control of green leaf nutritional status on nutrient resorption processes as indicated by the positive relationships between nutrient resorption efficiency and green leaf nutrient concentrations. Our findings provided a direct evidence that growth in 12-year-old poplar plantations was N-limited in a coastal region of eastern China.

scholarly journals Effects of Nitrogen Addition and Reproductive Effort on Nutrient Resorption of a Sand-Fixing Shrub

2020 ◽  
Vol 11 ◽  
Author(s):  
Lilong Wang ◽  
Yulin Li ◽  
Yulong Duan ◽  
Jie Lian ◽  
Yongqing Luo ◽  
...  
Keyword(s):  
Reproductive Effort ◽  
Fruit Production ◽  
Nutrient Resorption ◽  
N Recovery ◽  
N Addition ◽  
Resorption Efficiency ◽  
Temporal Separation ◽  
N Resorption ◽  
N Resorption Efficiency ◽  
Leaf N

Caragana microphylla is a sand-fixing leguminous shrub with strong resistance to drought, cold, and low soil fertility. As a result, it plays an essential role in combating desertification in northern China, but little is known about its nutrient budget. Nutrient resorption is a key process in plant nutrient conservation and has marked ecological implications for plant fitness and ecosystem nutrient cycling. We studied the effects of both nitrogen (N) addition and reproductive effort on leaf N resorption of C. microphylla in a temperate semi-arid sandy land in China. The results showed that sprouting of the early leaves from over-wintered buds employs a strategy for slow returns on nutrient investment with smaller specific leaf area (SLA) and higher N resorption efficiency, whereas the late leaves, which sprout from current-year buds, employ a strategy for quick returns on nutrient investment with higher SLA and lower N resorption efficiency. N addition significantly increased the N resorption efficiency from early leaves while exerting no impact on late leaves, suggesting that the increased N recovery from early leaves is done to sustain the high N demands of late leaves. Reproductive effort did not affect the N resorption from early or late leaves due to the temporal separation between fruit production and leaf senescence. Taken together, our results demonstrate that C. microphylla has evolved different investment strategies for leaf N in early and late leaves to conserve nutrients and facilitate its growth in desertified environments.

Leaf N, P Stoichiometry and Nutrient Resorption in Phosphorus-Enriched Soils in a Mountainous Region of the Dianchi Lake Watershed

2014 ◽  
Vol 955-959 ◽  
pp. 3687-3690
Author(s):  
Kai Yan ◽  
Changqun Duan ◽  
Long Zhang ◽  
Xin Xv ◽  
Change Liu ◽  
...  
Keyword(s):  
Model Building ◽  
Ecological Model ◽  
Nutrient Resorption ◽  
Dianchi Lake ◽  
Resorption Efficiency ◽  
Fresh Leaf ◽  
The Difference ◽  
Leaf P ◽  
Plant Forms ◽  
Leaf N

Understanding the leaf N, P concentrations and nutrient resorption of plants growing in phosphorus–enriched soil (PES) can provide new data for ecostoichiometric research and ecological model building. In this study, 117 green leaves and 53 senesced leaves of dominant plants in PES in the Dianchi Lake watershed, SW China, were sampled. Plants in PES had high fresh leaf P (4.60mg/g), senesced leaf P (2.70mg/g), and low fresh leaf N: P (4.41), senesced leaf N: P (3.21). P resorption efficiency (PRE) (25.09%) was significantly lower than N resorption efficiency (NRE) (52.68%). Forbs had the highest P content in fresh (5.35mg/g) and senesced leaf (3.25mg/g) among plants forms. Although NRE was varied among plant forms, the difference in PRE was not significant. In conclusion, PES has a tremendous impact on the patterns of leaf N, P and nutrient resorption of different plant forms, those results were different from general results.

scholarly journals Different responses of plant N and P resorption to overgrazing in three dominant species in a typical steppe of Inner Mongolia, China

PeerJ ◽  
2020 ◽  
Vol 8 ◽  
pp. e9915
Author(s):  
Zhen Wang ◽  
Saheed Olaide Jimoh ◽  
Xiliang Li ◽  
Baoming Ji ◽  
Paul C. Struik ◽  
...  
Keyword(s):  
Plant Species ◽  
Nutrient Resorption ◽  
Grass Species ◽  
Resorption Efficiency ◽  
Typical Steppe ◽  
P Concentration ◽  
N Resorption ◽  
Senesced Leaves ◽  
Dominant Grass ◽  
Leaf N

Nutrient resorption from senesced leaves is an important mechanism for nutrient conservation in plants. However, little is known about the effect of grazing on plant nutrient resorption from senesced leaves, especially in semiarid ecosystems. Here, we evaluated the effects of grazing on N and P resorption in the three most dominant grass species in a typical steppe in northern China. We identified the key pathways of grazing-induced effects on N and P resorption efficiency. Grazing increased N and P concentrations in the green leaves of Leymus chinensis and Stipa grandis but not in Cleistogenes squarossa. Both L. chinensis and S. grandis exhibited an increasing trend of leaf N resorption, whereas C. squarrosa recorded a decline in both leaf N and P resorption efficiency under grazing. Structural equation models showed that grazing is the primary driver of the changes in N resorption efficiency of the three dominant grass species. For L. chinensis, the P concentration in green and senesced leaves increased the P resorption efficiency, whereas the senesced leaf P concentration played an important role in the P resorption efficiency of C. squarrosa. Grazing directly drove the change in P resorption efficiency of S. grandis. Our results suggest that large variations in nutrient resorption patterns among plant species depend on leaf nutritional status and nutrient-use strategies under overgrazing, and indicate that overgrazing may have indirect effects on plant-mediated nutrient cycling via inducing shifts in the dominance of the three plant species.

Mangrove species maintains constant nutrient resorption efficiency under eutrophic conditions

2019 ◽  
Vol 36 (1) ◽  
pp. 36-38
Author(s):  
Lili Wei ◽  
Shuh-Ji Kao ◽  
Chaoxiang Liu
Keyword(s):  
Nutrient Availability ◽  
Nutrient Enrichment ◽  
Nutrient Resorption ◽  
Conservation Strategy ◽  
Nutrient Concentrations ◽  
Resorption Efficiency ◽  
Mangrove Species ◽  
Nutrient Resorption Efficiency ◽  
Black Mangrove ◽  
Nutrient Conservation

AbstractMangrove species have developed nutrient conservation mechanisms to adapt to oligotrophic intertidal environments. However, nutrient enrichment occurs worldwide, particularly in estuarine and coastal regions. Mangrove species may change their adaptive strategies if nutrient availability increases substantially. To understand how nutrient resorption (a major nutrient conservation strategy) responds to nutrient enrichment, a common mangrove species in China, Aegiceras corniculatum (black mangrove), was selected, and saplings were cultivated in nutrient-enriched soils. After one year, neither N nor P resorption efficiency showed significant variations with nutrient availability and there was no difference between N and P resorption efficiency. Overall, nutrient resorption efficiency of A. corniculatum remained at ∼40%, lower than the global average levels of evergreen plants (∼50%), indicating incomplete resorption of nutrients. Incomplete resorption was also evidenced by the nutrient concentrations, resorption proficiency and N: P ratio of plant leaves. Collectively, these results indicate that black mangrove can maintain constant nutrient resorption efficiency under eutrophic conditions.

Leaf traits and nutrient resorption of major woody species in the karst limestone area of Chongqing

2015 ◽  
Vol 35 (12) ◽  
Author(s):  
刘宏伟 LIU Hongwei ◽  
刘文丹 LIU Wendan ◽  
王微 Wang Wei ◽  
柴捷 Chai Jie ◽  
陶建平 Tao Jianping
Keyword(s):  
Woody Species ◽  
Leaf Traits ◽  
Nutrient Resorption

scholarly journals Relationships between leaf mass per area and nutrient concentrations in 98 Mediterranean woody species are determined by phylogeny, habitat and leaf habit

Trees ◽  
2017 ◽  
Vol 32 (2) ◽  
pp. 497-510 ◽  
Author(s):  
Enrique G. de la Riva ◽  
Rafael Villar ◽  
Ignacio M. Pérez-Ramos ◽  
José Luis Quero ◽  
Luis Matías ◽  
...  
Keyword(s):  
Woody Species ◽  
Nutrient Concentrations ◽  
Leaf Mass Per Area ◽  
Leaf Mass ◽  
Leaf Habit

scholarly journals Effects of ontogenetic stage and leaf age on leaf functional traits and the relationships between traits in Pinus koraiensis

2021 ◽  
Author(s):  
Meng Ji ◽  
Guangze Jin ◽  
Zhili Liu
Keyword(s):  
Significant Positive Correlation ◽  
Leaf Age ◽  
Leaf Traits ◽  
Ontogenetic Stage ◽  
Pinus Koraiensis ◽  
Mature Trees ◽  
N Content ◽  
Ontogenetic Stages ◽  
Leaf N Content ◽  
Leaf N

AbstractInvestigating the effects of ontogenetic stage and leaf age on leaf traits is important for understanding the utilization and distribution of resources in the process of plant growth. However, few studies have been conducted to show how traits and trait-trait relationships change across a range of ontogenetic stage and leaf age for evergreen coniferous species. We divided 67 Pinus koraiensis Sieb. et Zucc. of various sizes (0.3–100 cm diameter at breast height, DBH) into four ontogenetic stages, i.e., young trees, middle-aged trees, mature trees and over-mature trees, and measured the leaf mass per area (LMA), leaf dry matter content (LDMC), and mass-based leaf nitrogen content (N) and phosphorus content (P) of each leaf age group for each sampled tree. One-way analysis of variance (ANOVA) was used to describe the variation in leaf traits by ontogenetic stage and leaf age. The standardized major axis method was used to explore the effects of ontogenetic stage and leaf age on trait-trait relationships. We found that LMA and LDMC increased significantly and N and P decreased significantly with increases in the ontogenetic stage and leaf age. Most trait-trait relationships were consistent with the leaf economic spectrum (LES) at a global scale. Among them, leaf N content and LDMC showed a significant negative correlation, leaf N and P contents showed a significant positive correlation, and the absolute value of the slopes of the trait-trait relationships showed a gradually increasing trend with an increasing ontogenetic stage. LMA and LDMC showed a significant positive correlation, and the slopes of the trait-trait relationships showed a gradually decreasing trend with leaf age. Additionally, there were no significant relationships between leaf N content and LMA in most groups, which is contrary to the expectation of the LES. Overall, in the early ontogenetic stages and leaf ages, the leaf traits tend to be related to a "low investment-quick returns" resource strategy. In contrast, in the late ontogenetic stages and leaf ages, they tend to be related to a "high investment-slow returns" resource strategy. Our results reflect the optimal allocation of resources in Pinus koraiensis according to its functional needs during tree and leaf ontogeny.

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