Effects of nutrient additions on litter production and nutrient return in a nutrient-poor Cape fynbos ecosystem

1989 ◽  
Vol 117 (2) ◽  
pp. 227-235 ◽  
Author(s):  
E. T. F. Witkowski
2015 ◽  
Vol 36 (6Supl2) ◽  
pp. 4377
Author(s):  
Sabino Pereira da Silva Neto ◽  
Antonio Clementino dos Santos ◽  
Raimundo Laerton de Lima Leite ◽  
José Expedito Cavalcante da Silva ◽  
Durval Nolasco Neves Neto ◽  
...  

This study aimed to quantify, describe, and identify plant litter production and nutrient accumulation zones in different forest-pasture integration (FPI) systems and forest strata of the Cerrado-Amazon transition on typical orthic Quartzarenic Neosol using spatial analysis, principal component analysis, and non-hierarchical fuzzy k-mean clustering logic techniques. The evaluations were performed at two FPI systems comprising a combination of Brachiaria brizantha cv. Marandu and thinned native vegetation with 50 and 75% (FPI-I and FPI-II, respectively) shade in an original thinned forest (NFI) and in an original intact forest (NF-II) with 80 and 95% shade, respectively. An area of 4,000 m² (40 x 100 m) that contained 32 sampling points arranged in a 4 x 25 m grid was demarcated for each treatment. Plant litter was collected using 32 collectors installed at equidistant points. Twelve nylon bags were placed on the soil surface at each point to evaluate the plant litter decomposition, totaling 384 bags per treatment. It was possible to quantify, describe, and define plant litter production and nutrient accumulation zones in different FPI systems and forest strata of the Cerrado-Amazon transition on orthic Quartzarenic Neosol using geostatistical analysis, principal components, and non-hierarchical fuzzy k-mean clustering logic procedures.


2018 ◽  
Vol 28 (1) ◽  
pp. 11-19 ◽  
Author(s):  
K. P. Bhattarai ◽  
T. N. Mandal

Litter production and nutrient return to soil through litter fall is important pathway for the regulation of nutrient cycling and primary production of the forest. Litter fall dynamics is generally influenced by phenology of tree species, seasons and altitude of the forest stand. As most of the information on litter production are from temperate and dry tropical region. A comparative study on litter production and nutrient return were conducted in Terai Sal forest (TSF) and Hill Sal forest (HSF) located in moist tropical region of eastern Nepal. Litter samples were collected from the litter traps (1m × 1m size) placed randomly in the forest. Collection was done at two months interval for one year. Annual litterfall in TSF (8.82 Mg ha-1y-1) was significantly (p < 0.001) higher than in HSF (7.18 Mg ha-1y-1).There was distinct seasonality in litter production. In TSF and HSF, litterfall was maximum in the summer (6.57 Mg ha-1 and 5.05 Mg ha-1, respectively) and minimum in winter season (0.86 Mg ha-1 and 0.72 Mg ha-1, respectively). Amount of nutrient return to forest soil through litter fall (kg ha-1 y-1) was higher in TSF (72.44 N, 6.80 P and 33.23 K) than HSF (54.31 N, 4.84 P and 22.23 K). The difference in litter production between these two forests was influenced by the phenology of dominant tree species, variation in altitude and seasons. Nutrient return through litter fall is a great input of nutrients in soil which is required for production process. Thus, litter constitutes a significant role in forest management.Banko JanakariA Journal of Forestry Information for NepalVol. 28, No. 1, 2018, page: 11-19


2017 ◽  
Vol 2 (1) ◽  
pp. 1 ◽  
Author(s):  
Ng. Lamnganbi Devi ◽  
E. Jadu Singh

Litterfall and its nutrient return in five oak species were studied in the mixed Oak forest in Senapati District, Manipur .Litter production was measured by litter trap method. The total annual litterfall was 958.9 g m-2yr-1.Leaf and non leaf litterfall comprises 76.7 % and 23.3 % of the total litterfall. Maximum litterfall was found in the month of April (193.5 g m-2) and minimum in the month of July (23.7 g m-2).About 70% of the forest floor was replaced each year with turnover time of 1.42 yr.The amount of nutrient return through leaf litter was found to be maximum in Q.polystachya and minimum in C.indica. Nutrients (NPK) concentration of leaf litter of five different tree species was varied among different tree species.


2015 ◽  
Vol 36 (6Supl2) ◽  
pp. 4377
Author(s):  
Sabino Pereira da Silva Neto ◽  
Antonio Clementino dos Santos ◽  
Raimundo Laerton de Lima Leite ◽  
José Expedito Cavalcante da Silva ◽  
Durval Nolasco Neves Neto ◽  
...  

<p>This study aimed to quantify, describe, and identify plant litter production and nutrient accumulation zones in different forest-pasture integration (FPI) systems and forest strata of the Cerrado-Amazon transition on typical orthic Quartzarenic Neosol using spatial analysis, principal component analysis, and non-hierarchical fuzzy k-mean clustering logic techniques. The evaluations were performed at two FPI systems comprising a combination of <em>Brachiaria brizantha </em>cv. Marandu and thinned native vegetation with 50 and 75% (FPI-I and FPI-II, respectively) shade in an original thinned forest (NFI) and in an original intact forest (NF-II) with 80 and 95% shade, respectively. An area of 4,000 m² (40 x 100 m) that contained 32 sampling points arranged in a 4 x 25 m grid was demarcated for each treatment. Plant litter was collected using 32 collectors installed at equidistant points. Twelve nylon bags were placed on the soil surface at each point to evaluate the plant litter decomposition, totaling 384 bags per treatment. It was possible to quantify, describe, and define plant litter production and nutrient accumulation zones in different FPI systems and forest strata of the Cerrado-Amazon transition on orthic Quartzarenic Neosol using geostatistical analysis, principal components, and non-hierarchical fuzzy k-mean clustering logic procedures.</p>


2006 ◽  
Vol 235 (1-3) ◽  
pp. 174-185 ◽  
Author(s):  
Jiung-Hao Liao ◽  
Hsiang-Hua Wang ◽  
Chen-Chi Tsai ◽  
Zeng-Yei Hseu

1978 ◽  
Vol 26 (1) ◽  
pp. 79 ◽  
Author(s):  
PM Attiwill ◽  
HB Guthrie ◽  
R Leuning

Total litter fall in mature Eucalyptus obliqua forest is typical for warm temperate forest, in the range 3.6-5.5 t ha-1 yr-1. Fifty per cent of the litter fall occurs in the summer months, and the seasonal rate of litter fall is dependent primarily on temperature. The concentration of nutrients in litter fall varies significantly throughout the year. Prior to litter fall, about 70% of the phosphorus is withdrawn from that portion of the biomass which is to fall as litter and the amount of phosphorus cycled in the litter is therefore very small. At the other extreme, calcium is immobilized in large quantities immediately prior to litter fall. The internal, or 'biochemical', cycling of phosphorus is probably of major significance in the functioning of eucalypt forests on Australian soils characterized by a low phosphorus content.


2000 ◽  
Vol 11 (3) ◽  
pp. 71-82 ◽  
Author(s):  
P. Shanmughavel ◽  
R. S. Peddappaiah ◽  
T. Muthukumar

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