Above- and belowground organic matter storage and production in a tropical pine plantation and a paired broadleaf secondary forest

Cuevas, Elvira; Brown, Sandra; Lugo, Ariel E.

doi:10.1007/bf00010914

Cited by 138 publications

(89 citation statements)

References 12 publications

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“…More interesting and unique, however, is the observation that live fine root biomass was suppressed for so many years following disturbance. Other studies saw higher or equivalent live fine root biomass in recovering tropical forests of a similar age to ours (Cavelier et al 1996;Cuevas et al 1991;Raich 1980Raich , 1983. The low fine root biomass in the treatment and control plots following multiple disturbances contrasts with patterns of aboveground recovery, which showed a steady rise in the first 5 years following Hurricane Hugo .…”

Section: Root Dynamics Following Multiple Disturbancessupporting

confidence: 71%

A decade of belowground reorganization following multiple disturbances in a subtropical wet forest

2009

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Humid tropical forests are dynamic ecosystems that experience multiple and overlapping disturbance events that vary in frequency, intensity, and spatial extent. Here we report the results of a 10-year study investigating the effects of forest clearing and multiple hurricanes on ecosystem carbon reservoirs, nutrient pools and vegetation. The aboveground plant community was most heavily affected by multiple disturbances, with the 9-year-old stands showing high rates of hurricane-induced mortality relative to surrounding forest. Belowground pools were less affected. Live fine root biomass fluctuated in response to multiple disturbances, but returned to pre-disturbance levels after 10 years. Soil C was resilient to clearing and hurricanes, probably due to the large pool size and high clay content. Soil P fluctuated over time, declining during periods of rapid plant recovery and growth. With the exception of K, base cations recovered within 2 years following clearing and showed little response to hurricane disturbance.

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Section: Root Dynamics Following Multiple Disturbancessupporting

confidence: 71%

A decade of belowground reorganization following multiple disturbances in a subtropical wet forest

2009

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“…With increasing stand age, the gap in soil OC stock between the Cinnamomum and Pinus stands became more pronounced in all soil profiles investigated. Furthermore, when compared with broadleaf tree species, conifer species tended to allocate much more total organic matter production to aboveground growth, which features them as fast-growing tree species and caused a lower direct carbon input to soil (Cuevas et al, 1991). In this study, the highest OC stock presented in 24-year-old stands; in the Cinnamomum stands, though not significant, carbon stock still had an increasing trend from 24-to 45-year-old stands.…”

Section: Soil Organic Carbon and Nitrogen Stocksmentioning

confidence: 51%

Accumulation of soil organic C and N in planted forests fostered by tree species mixture

2017

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Abstract. With the increasing trend of converting monocultures into mixed forests, more and more studies have been carried out to investigate the admixing effects on tree growth and aboveground carbon storage. However, few studies have considered the impact of mixed forests on belowground carbon sequestration, particularly changes in soil carbon and nitrogen stocks as a forest grows. In this study, paired pure Pinus massoniana plantations, Cinnamomum camphora plantations and mixed Pinus massoniana-Cinnamomum camphora plantations at ages of 10, 24 and 45 years were selected to test whether the mixed plantations sequestrate more organic carbon (OC) and nitrogen (N) in soils and whether this admixing effect becomes more pronounced with stand ages. The results showed that tree species identification, composition and stand age significantly affected soil OC and N stocks. The soil OC and N stocks were the highest in mixed Pinus-Cinnamomum stands compared to those in counterpart monocultures with the same age in the whole soil profile or specific soil depth layers (0-10, 10-20 and 20-30 cm) for most cases, followed by Cinnamomum stands and Pinus stands with the lowest. These positive admixing effects were mostly nonadditive. Along the chronosequence, the soil OC stock peaked in the 24-year-old stand and was maintained as relatively stable thereafter. The admixing effects were also the highest at this stage. However, in the topsoil layer, the admixing effects increased with stand ages in terms of soil OC stocks. When comparing mixed Pinus-Cinnamomum plantations with corresponding monocultures within the same age, the soil N stock in mixed stands was 8.30, 11.17 and 31.45 % higher than the predicted mean value estimated from counterpart pure species plantations in 10-, 24-and 45-year-old stands, respectively. This suggests that these admixing effects were more pronounced along the chronosequence.

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“…This can be a source of uncertainty, as R:S ratio of biomass can vary among tree species (Cuevas et al 1991). In our site, the large root (stump þ stump roots)-to-shoot allometries of the species were significantly different (Appendix A).…”

Section: Impacts Of Tree Speciesmentioning

confidence: 90%

Impacts of individual tree species on carbon dynamics in a moist tropical forest environment

Russell

Raich

Arrieta

et al. 2010

Ecological Applications

102

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In the moist tropical forest biome, which cycles carbon (C) rapidly and stores huge amounts of C, the impacts of individual species on C balances are not well known. In one of the earliest replicated experimental sites for investigating growth of native tropical trees, we examined traits of tree species in relation to their effects on forest C balances, mechanisms of influence, and consequences for C sequestration. The monodominant stands, established in abandoned pasture in 1988 at La Selva Biological Station, Costa Rica, contained five species in a complete randomized block design. Native species were: Hieronyma alchorneoides, Pentaclethra macroloba, Virola koschnyi, and Vochysia guatemalensis. The exotic species was Pinus patula. By 16 years, the lack of differences among species in some attributes suggested strong abiotic control in this environment, where conditions are very favorable for growth. These attributes included aboveground net primary productivity (ANPP), averaging 11.7 Mg C·ha −1 ·yr −1 across species, and soil organic C (0-100 cm, 167 Mg C/ha). Other traits differed significantly, however, indicating some degree of biological control. In Vochysia plots, both aboveground biomass of 99 Mg C/ha, and belowground biomass of 20 Mg C/ha were 1.8 times that of Virola (P = 0.02 and 0.03, respectively). Differences among species in overstory biomass were not compensated by understory vegetation. Belowground NPP of 4.6 Mg C·ha −1 ·yr −1 in Hieronyma was 2.4 times that of Pinus (P < 0.01). Partitioning of NPP to belowground components in Hieronyma was more than double that of Pinus (P = 0.03). The canopy turnover rate in Hieronyma was 42% faster than that of Virola (P < 0.01). Carbon sequestration, highest in Vochysia (7.4 Mg C·ha −1 ·yr −1 , P = 0.02), averaged 5.2 Mg C·ha −1 ·yr −1 , close to the annual per capita fossil fuel use in the United States of 5.3 Mg C. Our results indicated that differences in species effects on forest C balances were related primarily to differences in growth rates, partitioning of C among biomass components, tissue turnover rates, and tissue chemistry. Inclusion of those biological attributes may be critical for robust modeling of C cycling across the moist tropical forest biome.Keywords abandoned pasture, biomass, carbon sequestration, carbon use efficiency, moist tropical forest, net primary productivity, plantations, root : shoot ratios, tree species effects, turnover Abstract. In the moist tropical forest biome, which cycles carbon (C) rapidly and stores huge amounts of C, the impacts of individual species on C balances are not well known. In one of the earliest replicated experimental sites for investigating growth of native tropical trees, we examined traits of tree species in relation to their effects on forest C balances, mechanisms of influence, and consequences for C sequestration. The monodominant stands, established in abandoned pasture in 1988 at La Selva Biological Station, Costa Rica, contained five species in a complete randomized block design. Nativ...

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Above- and belowground organic matter storage and production in a tropical pine plantation and a paired broadleaf secondary forest

Cited by 138 publications

References 12 publications

A decade of belowground reorganization following multiple disturbances in a subtropical wet forest

A decade of belowground reorganization following multiple disturbances in a subtropical wet forest

Accumulation of soil organic C and N in planted forests fostered by tree species mixture

Impacts of individual tree species on carbon dynamics in a moist tropical forest environment

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