Effects of litter thickness on leaf litter decomposition and enzyme activity of three trees in the subtropical forests

Xiaoyan, 季晓燕 Ji; Hong, 江洪 Jiang; Jianghua, 洪江华 Hong; Yuandan, 马元丹 Ma; Rusong, 王如松 Wang; 季晓燕,; 江洪,; 洪江华,; 马元丹,

doi:10.5846/stxb201209131290

Cited by 3 publications

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“…This finding could be attributed to the fact that as the decomposition of litter proceeded, the microbial quantity and diversity gradually increased, resulting in an elevation of secretion and activity of CEL. PPO and CAT are the key enzymes participating in the degradation of recalcitrant components within plant litter [40,41], and they also play a crucial role in maintaining the carbon cycle of ecosystems [42]. During the initial stages of decomposition, the total carbon content gradually decreased in the five types of litter.…”

Section: Discussionmentioning

confidence: 99%

Chemical Stoichiometry and Enzyme Activity Changes during Mixed Decomposition of Camellia sinensis Pruning Residues and Companion Tree Species Litter

et al. 2023

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(1) Background: In managing ecological tea gardens, litter composed of pruned and fallen tea leaves from companion tree species is an important component of tea garden soil. The decomposition of litter plays a crucial role in regulating nutrient cycling in tea garden ecosystems. (2) Methods: This study employed the litterbag method to investigate chemical stoichiometry characteristics and enzyme activity changes during the decomposition process of pruned and fallen Camellia sinensis leaves from companion tree species in an ecological tea garden located in central Guizhou Province. (3) Results: With decomposition duration, the general trend of changes in the C/N and C/P ratios showed a decrease in the activity of UE (urease), AP (acid phosphatase), and PPO (polyphenol oxidase) followed by an increase, while CAT (catalase) and CEL (cellulase) activity decreased, then increased, and then decreased again. On the other hand, the N/P and the activity of SC (sucrase) first increased and then decreased. The C/N and the activities of UE, PPO, and AP generally reached their maximum values during the late decomposition stage (366–428 d), while the N/P and the CAT activity peaked during the mid-decomposition stage (305 d). In contrast, the activity of SC and CEL reached its maximum value during the early decomposition stage (123 d). The N/P ratios were significantly higher than those of the CS (C. sinensis) litter in the mixed treatment, while C/N and C/P ratios were significantly lower than those in the CS during decomposition for 184–366 days. The UE, CAT, AP, and SC activities of CBL (C. sinensis + B. luminifera) litter were significantly higher than those of the CS litter during decomposition. During the experiment, antagonistic effects were observed in the C/N and C/P ratios of the different litter types. Most mixed litter exhibited additive effects on enzyme activity, while a few showed nonadditive effects. For the nonadditive effects, most were antagonistic effects, mainly in the CPM (C. sinensis + C. glanduliferum) litter. A small portion, mainly observed in the CBL and CCG (C. sinensis + C. glanduliferum) litter, showed synergistic effects. (4) Conclusions: Selecting B. luminifera and C. glanduliferum to be part of the tree species composition in ecological tea gardens can produce positive mixed effects on enzyme activity during litter decomposition, increase nutrient return capacity, maintain tea garden fertility, and achieve the ecological development of tea gardens.

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Section: Discussionmentioning

confidence: 99%

Chemical Stoichiometry and Enzyme Activity Changes during Mixed Decomposition of Camellia sinensis Pruning Residues and Companion Tree Species Litter

et al. 2023

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“…The results are presented in terms of nutrition content per unit mass (Wu et al, 2010). Contents of Ca and Mg were determined by atomic absorption spectrophotometer (Perk in-Elmer HGA 700) [7] .…”

Section: Determining Elements In the Plantmentioning

confidence: 99%

Element Content and Nutrient Resorption Efficiency of Litter Leaf in the Several Typical Desert Plants

Zhu

Xin

et al. 2013

AMM

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Nutrient elements from litter decomposition was viewed as the main source of essential elements for normal growing of the forest tree. In this study, selected litter leaves of several typical desert plants as study materials, and deferent element contents of the litter leaves were analyzed. The main results are as belows: (1) There were significant differences in the levels of C, N, P, K, Ca, Mg and K between litter leaves of different desert plants (p< 0.01). (2) Significant differences were found in the nutrition re-utilization rate of the withered leaves of different plants, with P > K > N.Haloxylon ammodendronhas the highest N utilization rate of 88.33%.Calligonum mongolicumhas the lowest P utilization rate of 95.13%.Elaeagnus angustifoliahas the highest K utilization rate of 77.49%.

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Influence of aerially seeded Pinus massoniana plantations on soil quality in severely eroded and degraded land of subtropical China

et al. 2022

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Vegetation restoration is widely used to reduce soil erosion and control soil degradation, which is conducive to improving soil quality. Aerial seeding is an effective vegetation recovery method that has been applied in large areas with severe soil erosion in China. Pinus massoniana is not only a typical native coniferous tree species, but also a pioneer tree species for vegetation recovery in subtropical China. This study evaluates the soil quality of aerially seeded P. massoniana plantations of different stand ages and examines the vegetation factors affecting soil quality. Principal component analysis and Pearson correlation analysis were used to determine the minimum data set (MDS) for developing a soil quality index. The relationship between soil quality and vegetation factors was analyzed using redundancy analysis. The MDS was established with soil bulk density, field water capacity, non-capillary porosity, total nitrogen, soil organic matter, and pH. The results showed that the soil quality significantly increased with vegetation recovery age at 0–20 and 20–50 cm soil depths. The soil quality of the surface layer was mainly affected by understory vegetation and litter, whereas that of the deep layer was mainly affected by trees. Therefore, the appropriate management of P. massoniana forest, achieved by appropriately extending forest management rotation, replanting broad-leaved trees, and minimizing the damage to understory vegetation and litter, is essential for effectively improving soil quality.

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Effects of litter thickness on leaf litter decomposition and enzyme activity of three trees in the subtropical forests

Cited by 3 publications

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Chemical Stoichiometry and Enzyme Activity Changes during Mixed Decomposition of Camellia sinensis Pruning Residues and Companion Tree Species Litter

Chemical Stoichiometry and Enzyme Activity Changes during Mixed Decomposition of Camellia sinensis Pruning Residues and Companion Tree Species Litter

Element Content and Nutrient Resorption Efficiency of Litter Leaf in the Several Typical Desert Plants

Influence of aerially seeded Pinus massoniana plantations on soil quality in severely eroded and degraded land of subtropical China

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