Effects of fertilisation on soil niutrient characteristics and the growth of tree stand in secondary seasonally dry tropical forests in Mexico
Soil properties and stem growth were studied in dominant tree species in secondary tropical dry forests growing on limestone in Yucatán Peninsula, México. A young forest (10 years old, site A) with phosphorus (P)-poor soil and an older forest (60 years old, site B) with soil having higher available...
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| Main Authors: | , , |
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| Format: | Journal Contribution |
| Language: | English |
| Published: |
2017
|
| Subjects: | |
| Online Access: | http://agris.upm.edu.my:8080/dspace/handle/0/13000 |
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| Summary: | Soil properties and stem growth were studied in dominant tree species in secondary tropical dry forests growing on limestone in Yucatán Peninsula, México. A young forest (10 years old, site A) with phosphorus (P)-poor soil and an older forest (60 years old, site B) with soil having higher available P contents were selected. Tree growth of representative
species of each site was studied in relation to soil nitrogen (N) and P concentrations. Four independent
plots (12 m × 12 m) in each forest were either left intact (controls) or fertilised with N, P or with N + P for
three years. In the young forest soil concentrations of NO
3
-
were higher than those of NH
4
+
, indicating that
nitrification proceeded fast. Application of N and N + P increased the concentration of soil NO
3
-
at site A;
fertilisation treatments at this site increased trunk growth only in
Lysiloma latisiliquum
. In contrast, N or P
fertilisation at site B did not significantly affect soil extractable N concentrations. At this site, fertilisation
increased N transformations and P addition promoted growth in
Acacia gaumeri and Bursera simaruba. These findings indicated that nutrient limitation occurred in the secondary fores |
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