Soil erosion affected by trees in a tropical primary rain forest, Papua New Guinea

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60077344%3A_____%2F23%3A00570447" target="_blank" >RIV/60077344:_____/23:00570447 - isvavai.cz</a>

Alternative codes found

RIV/00027073:_____/23:N0000027 RIV/60076658:12310/23:43906441 RIV/62156489:43410/23:43923002

Result on the web

<a href="https://www.sciencedirect.com/science/article/pii/S0169555X23000090?via%3Dihub" target="_blank" >https://www.sciencedirect.com/science/article/pii/S0169555X23000090?via%3Dihub</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.geomorph.2023.108589" target="_blank" >10.1016/j.geomorph.2023.108589</a>

Result language

angličtina

Original language name

Soil erosion affected by trees in a tropical primary rain forest, Papua New Guinea

Original language description

Trees have the ability to distinctly determine soil evolution and hillslope processes through mechanical soil disturbances such as tree uprooting. Recent findings have resulted in new biogeomorphic state transition models for old-growth forests in the temperate climate zone. The situation in tropical forests, however, is mostly unknown. Here, we focus on determining short-(decades) and long-term (millennia) soil erosion rates and the biogeomorphic role of trees on hillslope dynamics in the species-rich Wanang primeval tropical forest, Papua New Guinea. We hypothesized that trees play a significant role in hillslope dynamics on a background of powerful soil erosion dominated by abiotic factors, and that this role has potentially intensified over the last decades.nnThe long-term soil erosion was assessed using the meteoric Be-10 levels in three soil profiles along the whole depth gradient along with one natural outcrop. The recent soil erosion rate was determined using 239+240Pu levels in the uppermost soil layers. The specific role of trees in hillslope processes was evaluated based on repeated tree censuses of 65,535 tree individuals, calculating the tree mortality rate and modeling the soil volume affected by uprooted trees and by the in situ decay of the root systems of broken trees.nnSoil erosion was 6.25 m(3) ha(-1) yr(-1) over the long term and indeed did increase during the last decades. While this rate was significantly affected by trees, they were not the main factor, with circa 0.95 m(3) ha(-1) influenced annually by uprooting, and an additional 0.61 m3 ha(-1) by the in situ decay of root systems. These results reflect a forest ecosystem that is currently in the biogeomorphic stage of biotic/abiotic feedbacks.

Czech name

—

Czech description

—

Type

J_imp - Article in a specialist periodical, which is included in the Web of Science database

CEP classification

—

OECD FORD branch

40104 - Soil science

Project

<a href="/en/project/GA19-09427S" target="_blank" >GA19-09427S: The mystery of biogenic soil creep: the biogeomorphic role of trees in temperate and tropical forests and its ecological consequences</a><br>

Continuities

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year

2023

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Name of the periodical

Geomorphology

ISSN

0169-555X

e-ISSN

1872-695X

Volume of the periodical

425

Issue of the periodical within the volume

MAR 15

Country of publishing house

NL - THE KINGDOM OF THE NETHERLANDS

Number of pages

12

Pages from-to

108589

UT code for WoS article

000926588000001

EID of the result in the Scopus database

2-s2.0-85146587248