Seasonal changes in soil phosphorus and associated microbial properties under adjacent grassland and forest in New Zealand

Chen, Chengrong; Condron, Leo M.; Davis, M. R.; Sherlock, Robert R.

doi:10.1016/s0378-1127(02)00450-4

Cited by 215 publications

(162 citation statements)

References 36 publications

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“…For phosphodiesterase, relatively high activities between 3.1 and 25.2 Amol pNP g À1 soil h À1 were reported from a New Zealand pasture soil during 3 years of repeated measurements (Ross et al, 1995), although much lower activities between 0.06 and 0.12 Amol pNP g À1 soil h À1 were detected during a seasonal cycle in another New Zealand grassland soil (Chen et al, 2003). Corresponding phosphomonoesterase activities in the latter study ranged between 2.0 and 4.3 Amol pNP g À1 soil h À1 .…”

Section: Discussionmentioning

confidence: 93%

Phosphatase activity in temperate pasture soils: Potential regulation of labile organic phosphorus turnover by phosphodiesterase activity

Turner¹,

Haygarth²

2005

Science of The Total Environment

184

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Section: Discussionmentioning

confidence: 93%

Phosphatase activity in temperate pasture soils: Potential regulation of labile organic phosphorus turnover by phosphodiesterase activity

Turner¹,

Haygarth²

2005

Science of The Total Environment

184

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“…Abdu et al (2007) carried out a study and stated that the higher clay content related to a low levels of nutrients especially available P. However, the composition of forest floor also plays an important role in concentrations of P. Study conducted by Chen et al (2003) in unimproved grassland and 19 years old stand conclude that the recycling of P was mainly driven by plant P demand and sustained by root litter inputs and leaf litter inputs in the forest ecosystems. Besides, seasonal changes in environmental conditions such as rainfall, soil moisture and temperature also involved in the P availability.…”

Section: Discussionmentioning

confidence: 99%

Differences in Soil Physical and Chemical Properties of Rehabilitated and Secondary Forests

Akbar¹

2010

American Journal of Applied Sciences

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Problem statement:The soil properties of tropical rain forest in Southeast Asia have been characterized by several researchers; however empirical data on soil characteristics under rehabilitation program are still limited or even lacking. This research is important to determine the soil physical and chemical properties of a rehabilitated degraded forest land 19 years after planting with various indigenous species in comparison with adjacent secondary forests and to elucidate the soil fertility status in rehabilitated and secondary forests by using Soil Fertility Index (SFI) and Soil Evaluation Factor (SEF). Approach: Soil samples were collected from both locations which were rehabilitated forest and secondary forest (Nirwana forest) at University Putra Malaysia, Bintulu Sarawak Campus. The plot size of each experimental site was 20×20 m. An auger was used to take soil samples from two depths, namely 0-10 and 10-20 cm. For soil profile, the soil samples were collected from different depths up to 100 cm according to the soil horizons. The samples were airdried, homogenized and sieved to pass a 2 mm mesh sieve for further analysis. The physical analysis consisted of bulk density and soil moisture content. For chemical analysis, soil acidity, soil organic matter, total organic carbon, available P, exchangeable Al, exchangeable ammonium and nitrate, exchangeable cations (Ca, Mg, K) and Cation Exchange Capacity (CEC) were determined. The soil fertility status was determined based on SFI and SEF values for both rehabilitated and secondary forests. Results: The bulk density of the rehabilitated forest ranged between 0.70 and 1.29 g cm −3 and that of the secondary forest was 0.64-0.76 g cm −3 . The soil moisture content of the rehabilitated forest was 23.31-51.03% while that of secondary forest was 41.06-41.49%. The range pH (water) of the rehabilitated forest was 4.5-5.0 and that of the secondary forest range was 4.2-4.3. Furthermore, the content of SOM in the rehabilitated forest was 2.5-5.8%. On other hand, the range for the secondary was 4.1-4.6%. The exchangeable Al of the rehabilitated forest was 0.8-2.5 cmol c kg −1 and that of the secondary forest was 1.6-1.7 cmol c kg −1 . The CEC of the rehabilitated forest was 1.4-11.8 cmol c kg −1 , while that of the secondary forest was 4.3-4.5 cmol c kg −1 . Based on SFI and SEF values, the secondary forest had a lower fertility status compared to the rehabilitated forest. Moreover, the SEF value of the secondary forest was below 5, while some of the plots of rehabilitated forest had the SEF values greater than 5. Conclusion: It can be concluded that both rehabilitated and secondary forests have significant differences based on selected physical and chemical properties. Moreover, the soil fertility status at rehabilitated plots was comparatively higher than secondary Am. J. Applied Sci., 7 (9): 1200Sci., 7 (9): -1209Sci., 7 (9): , 2010 1201 forest indicating a good potential of 'Miyawaki' forest rehabilitation technique in rehabilitating and replenishing soil fe...

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“…The impact of land-use changes on the ecosystem processes depends mainly on plant species and associated management practices (e.g., Pan et al 2008Pan et al , 2009. It has been reported that land-use change from grassland to plantation forest enhanced the availability of soil P and other nutrients (e.g., Chen et al 2000;Chen et al 2003), while other studies suggested that land-use change from native forest to plantation forest decreased C and N availability (e.g., Chen et al 2004b;Burton et al 2007;Xu et al 2008). Shifts in C and nutrient availability and balance would affect soil microbial community composition and functioning (Chen et al 2004a, b;He et al 2005;Macdonald et al 2009).…”

Section: Land-use Changementioning

confidence: 99%

Forest ecosystem responses to environmental changes: the key regulatory role of biogeochemical cycling

Chen

2009

J Soils Sediments

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Seasonal changes in soil phosphorus and associated microbial properties under adjacent grassland and forest in New Zealand

Cited by 215 publications

References 36 publications

Phosphatase activity in temperate pasture soils: Potential regulation of labile organic phosphorus turnover by phosphodiesterase activity

Phosphatase activity in temperate pasture soils: Potential regulation of labile organic phosphorus turnover by phosphodiesterase activity

Differences in Soil Physical and Chemical Properties of Rehabilitated and Secondary Forests

Forest ecosystem responses to environmental changes: the key regulatory role of biogeochemical cycling

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