 |
| Titel |
Changes in soil quality after converting Pinus to Eucalyptus plantations in southern China |
| VerfasserIn |
K. Zhang, H. Zheng, F. L. Chen, Z. Y. Ouyang, Y. Wang, Y. F. Wu, J. Lan, M. Fu, X. W. Xiang |
| Medientyp |
Artikel
|
| Sprache |
Englisch
|
| ISSN |
1869-9510
|
| Digitales Dokument |
URL |
| Erschienen |
In: Solid Earth ; 6, no. 1 ; Nr. 6, no. 1 (2015-02-02), S.115-123 |
| Datensatznummer |
250115390
|
| Publikation (Nr.) |
 copernicus.org/se-6-115-2015.pdf |
|
|
|
|
|
| Zusammenfassung |
| Vegetation plays a key role in maintaining soil quality, but long-term
changes in soil quality due to plant species change and successive planting
are rarely reported. Using the space-for-time substitution method, adjacent
plantations of Pinus and first, second, third and fourth generations of
Eucalyptus in Guangxi, China were used to study changes in soil quality caused by
converting Pinus to Eucalyptus and successive Eucalyptus planting. Soil chemical and biological
properties were measured and a soil quality index was calculated using
principal component analysis. Soil organic carbon, total nitrogen, alkaline
hydrolytic nitrogen, microbial biomass carbon, microbial biomass nitrogen,
cellobiosidase, phenol oxidase, peroxidase and acid phosphatase activities
were significantly lower in the first and second generations of
Eucalyptus plantations compared with Pinus plantation, but they were significantly higher
in the third and fourth generations than in the first and second
generations and significantly lower than in Pinus plantation. Soil total and
available potassium were significantly lower in Eucalyptus plantations (1.8–2.5 g kg−1
and 26–66 mg kg−1) compared to the Pinus plantation (14.3 g kg−1 and
92 mg kg−1), but total phosphorus was significantly higher
in Eucalyptus plantations (0.9–1.1 g kg−1) compared to the Pinus plantation (0.4 g kg−1). As an integrated indicator, soil quality index was highest in
the Pinus plantation (0.92) and lowest in the first and second generations
of Eucalyptus plantations (0.24 and 0.13). Soil quality index in the third and
fourth generations (0.36 and 0.38) was between that in Pinus plantation and in
first and second generations of Eucalyptus plantations. Changing tree
species, reclamation and fertilization may have contributed to the change
observed in soil quality during conversion of Pinus to Eucalyptus and successive
Eucalyptus planting. Litter retention, keeping understorey coverage, and reducing soil
disturbance during logging and subsequent establishment of the next rotation
should be considered to help improving soil quality. |
| |
|
| Teil von |
|
|
|
|
|
|
|
|