Changes in soil quality due to introduction of broad-leaf trees into clear-felled Chinese fir forest in the mid-subtropics of China

Huang, Y.; Wang, S.L.; Zhu, Feng; Ouyang, Zhiyun; Wang, X.K.; Feng, Zongwei

doi:10.1079/sum2004274

Cited by 29 publications

(10 citation statements)

References 9 publications

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“…Thus, the higher metabolic quotient (qCO 2 ) in pure plantations reflects a decrease in the efficiency of substrate utilization by soil microbial community. The low microbial C utilization in pure Chinese fir plantation soil was consistent with the results of Huang et al (2004). There was a negative correlation between the qCO 2 and soil pH in Chinese fir plantations (r = 0.216, n = 18), and the soils under mixed plantations had a higher pH values than that under pure plantation (Table 2).…”

Section: Discussionsupporting

confidence: 90%

Soil microbial properties and nutrients in pure and mixed Chinese fir plantations

Wang

2008

Journal of Forestry Research

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An investigation on soil organic carbon, total N and P, NO 3 --N, available P, microbial biomass C, N and P, basal respiration and metabolic quotients (qCO 2 ) was conducted to compare differences in soil microbial properties and nutrients between 15-year-old pure Chinese fir (Cunninghamia lanceolata) and two mixed Chinese fir plantations (mixed plantations with Alnus cremastogyne, mixed plantations with Kalopanax septemlobus) at Huitong Experimental Station of Forest Ecology (26°45′N latitude and 109°30′E longitude), Chinese Academy of Sciences in May, 2005. Results showed that the concentrations of soil organic carbon, total N, NO 3 --N, total P and available P in mixed plantations were higher than that in pure plantation. Soil microbial biomass N in two mixed plantations was averagely higher 69% and 61% than that in pure plantation at the 0-10 cm and 10-20 cm soil depth, respectively. Soil microbial biomass C, P and basal respiration in mixed plantations were higher 11%, 14% and 4% at the 0-10 cm soil depth and 6%, 3% and 3% at the 10-20 cm soil depth compared with pure plantation. However, soil microbial C: N ratio and qCO 2 were averagely lower 34% and 4% in mixed plantations than pure plantation. Additionally, there was a closer relation between soil microbial biomass and soil nutrients than between basal respiration, microbial C: N ratio and qCO 2 and soil nutrients. In conclusion, introduction of broad-leaved tree species into pure coniferous plantation improved soil microbial properties and soil fertility, and can be helpful to restore degraded forest soil.

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Section: Discussionsupporting

confidence: 90%

Soil microbial properties and nutrients in pure and mixed Chinese fir plantations

Wang

2008

Journal of Forestry Research

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“…In this study, the contribution of microbial C to soil organic C in natural secondary broad-leaved forest was higher than in C. lanceolata plantations (Table 2). This result agrees with the observations reported by Xu and Xu (2003), and was very low compared to the values reported from subtropics forest soils (Huang et al 2004), tropical forest soils (Dinesh et al 2003;Salamanca et al 2006). The contribution of microbial N to total N also had significant difference between natural secondary broad-leaved forest and C. lanceolata plantations, which falls within the reported range of forest soils (Martikainen and Palojarvi 1990) and agricultural soil) (Brookes et al 1985b), but was much higher than the observation reported by Dinesh et al (2003) and Devi and Yadava (2006) for tropical forest soils.…”

Section: Discussionsupporting

confidence: 93%

Microbial biomass in subtropical forest soils: effect of conversion of natural secondary broad-leaved forest to Cunninghamia lanceolata plantation

Wang

2006

J. of For. Res.

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Conversion of natural secondary broad-leaved forest to Cunninghamia lanceolata plantation is a common management practice in subtropical China. In this study, we compared soil physico-chemical properties, microbial biomass in one natural secondary broad-leaved forest and two C. lanceolata plantation sites to estimate the effects of forest conversion on soil microbial biomass at the Huitong Experimental Station of Forestry Ecology, Chinese Academy of Sciences. Concentrations of soil organic carbon, total nitrogen, NH 4 + -N and microbial biomass carbon and nitrogen were much lower under C. lanceolata plantations as compared to natural secondary broad-leaved forest.Soil microbial biomass C in the first and second rotation of C. lanceolata plantations was only 53%, 46% of that in natural secondary broad-leaved forest, and microbial biomass N was 97% and 79%, respectively. The contribution of microbial biomass C to soil organic C was also lower in the plantation sites. However, the contribution of microbial N to total nitrogen and NH 4 + -N was greater in the C. lanceolata plantation sites. Therefore, conversion of natural secondary broad-leaved forest to C. lanceolata plantation and continuous planting of C. lanceolata led to the decline in soil microbial biomass and the degradation of forest soil in subtropical China.

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“…The microbial quotient was calculated using the ratio of microbial biomass carbon to soil organic carbon. It can provide an early warning of the improvement or deterioration of soil quality (Huang et al 2004). All analyses were conducted in triplicate and expressed on the basis of ovendry weight of soil (105°C, 12 h), and the means were taken as representative values for the measured soil properties.…”

Section: Soil Analysismentioning

confidence: 99%

Exotic Pinus carbaea causes soil quality to deteriorate on former abandoned land compared to an indigenous Podocarpus plantation in the tropical forest area of southern China

Wei

Ouyang

Miao

et al. 2009

Journal of Forest Research

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Soil properties under an exotic plantation (Pinus caribaea) and an indigenous plantation (Podocarpus imbricatus) were compared with adjacent secondary forests and abandoned land in the tropical forest areas of Jianfengling National Nature Reserve in Hainan province, southern China. The surface soil (0-0.2 m) under Pi. caribaea has higher bulk density, lower soil organic carbon, total N, total K, available N, microbial biomass carbon, and smaller soil microbial communities (as indicated by soil Biolog profiles) than under Po. imbricatus. Both land use types showed negative cumulative soil deterioration index (DI) compared to secondary forests. However, compared to abandoned land (DI = -262), the soil quality of Po. imbricatus showed improvement (DI = -194) while that of Pi. caribaea showed deterioration (DI = -358). These results demonstrated that these exotic pine plantations can significantly and negatively influence soil properties. By contrast, our results showed that adoption of indigenous species in plantations, or natural regeneration, can improve soil quality.

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Changes in soil quality due to introduction of broad-leaf trees into clear-felled Chinese fir forest in the mid-subtropics of China

Cited by 29 publications

References 9 publications

Soil microbial properties and nutrients in pure and mixed Chinese fir plantations

Soil microbial properties and nutrients in pure and mixed Chinese fir plantations

Microbial biomass in subtropical forest soils: effect of conversion of natural secondary broad-leaved forest to Cunninghamia lanceolata plantation

Exotic Pinus carbaea causes soil quality to deteriorate on former abandoned land compared to an indigenous Podocarpus plantation in the tropical forest area of southern China

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