Community characteristics and soil properties of coniferous plantation forest monocultures in the early stages after close-to-nature transformation management in southern subtropical China

Youjun, 何友均 He; Xingyun, 梁星云 Liang; Lin, 覃林 Qin; Zhiyong, 李智勇 Li; Meixiang, 邵梅香 Shao; Ling, 谭玲 Tan

doi:10.5846/stxb201208261204

Cited by 13 publications

(3 citation statements)

References 5 publications

(5 reference statements)

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“…Certain regions have experienced moderate success in the near-natural transformation of planted forest through selective logging and creating gaps Taki et al 2010;He et al 2013;Wang and Liu 2011). Although these methods have resulted in positive changes to some forests, in other cases, simply allowing the course of natural development to take place can also result in comparable transitions.…”

Section: Discussionmentioning

confidence: 99%

“…Current management practices used to implement near-natural transformations of planted forests include selective logging (He et al 2013;, thereby creating gaps (Rouvinen and Kouki 2011;Wang and Liu 2011), and encouraging the establishment of broad-leaved species in mixtures with conifers. The broadleaved trees used in this process are primarily native species (Lu 2006).…”

Section: Introductionmentioning

confidence: 99%

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The structure and soil characteristics of a Pinus tabuliformis planted forest after 60 years of natural development in North China

Chen¹,

Cong²,

Cheng³

et al. 2017

Silva Fenn.

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Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

The structure and soil characteristics of a Pinus tabuliformis planted forest after 60 years of natural development in North China

Chen¹,

Cong²,

Cheng³

et al. 2017

Silva Fenn.

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“…Pingxiang County has a subtropical monsoon climate, ranging geographically from 106°41′ to 106°59′E and 21°57′ to 22°16′N, characterized by wide seasonal variations in rainfall (the annual rainfall in the region is 1200-1500 mm), high temperatures (the annual average temperature varies between 20.5 °C and 21.7 °C) and high humidity (the relative humidity is 80-84%) (Jiang et al 2015). The soil at the study area was formed from granite and is classified as red soil in the Chinese soil classification, showing pH value of 4.8-5.5 (Youjun et al 2013).…”

Section: Study Areamentioning

confidence: 99%

An analysis of potential investment returns of planted forests in South China

Zhang

Yin

et al. 2019

New Forests

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Financial returns of forest plantations are an important concern around the world. In this research, we focused on South China's timber investments, collected data from the Pingxiang, Guangxi Province, China, which is the demonstration zone of Fast-growing and High-yielding Timber Plantation Base Construction Program and National Timber Strategic Storage and Production Bases Construction Program, and used capital budgeting analysis method and sensitivity analysis to compare different scenarios of planted forest management. The results showed that excluding land costs, (1) the financial returns of Eucalyptus forest managed by small business were excellent, having an IRR of 28% per year and a LEV of $7555 per ha, but it had a high risk with fluctuations of cost, timber price and timber yield; (2) the results for the Experimental Center of Tropical Forests indicate that the Eucalyptus forest and Castanopsis hystrix forest returns were greater than those for Cunninghamia lanceolata forest and Pinus massoniana forest, with having IRRs of 24%, 21%, 13% and 10% per year respectively. The mixed planted forest of Castanopsis hystrix × Eucalyptus and Castanopsis hystrix × Pinus massoniana had the features of high profits and low risks; (3) the forest farmers had lower levels of returns for Eucalyptus forest management in South China, but were still in the middle rank of global comparisons. This study gave a view of China's timber investment and provided more options of improving the economic returns of planted forest management to both small businesses and forest farmers in South China.

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An alternative approach to reduce algorithm‐derived biases in monitoring soil organic carbon changes

Zhang

Chen

Shi

et al. 2019

Ecology and Evolution

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Quantifying soil organic carbon (SOC) changes is a fundamental issue in ecology and sustainable agriculture. However, the algorithm‐derived biases in comparing SOC status have not been fully addressed. Although the methods based on equivalent soil mass (ESM) and mineral‐matter mass (EMMM) reduced biases of the conventional methods based on equivalent soil volume (ESV), they face challenges in ensuring both data comparability and accuracy of SOC estimation due to unequal basis for comparison and using unconserved reference systems. We introduce the basal mineral‐matter reference systems (soils at time zero with natural porosity but no organic matter) and develop an approach based on equivalent mineral‐matter volume (EMMV). To show the temporal bias, SOC change rates were recalculated with the ESV method and modified methods that referenced to soils at time t1 (ESM, EMMM, and EMMV‐t1) or referenced to soils at time zero (EMMV‐t0) using two datasets with contrasting SOC status. To show the spatial bias, the ESV‐ and EMMV‐t0‐derived SOC stocks were compared using datasets from six sites across biomes. We found that, in the relatively C‐rich forests, SOC accumulation rates derived from the modified methods that referenced to t1 soils and from the EMMV‐t0 method were 5.7%–13.6% and 20.6% higher than that calculated by the ESV method, respectively. Nevertheless, in the C‐poor lands, no significant algorithmic biases of SOC estimation were observed. Finally, both the SOC stock discrepancies (ESV vs. EMMV‐t0) and the proportions of this unaccounted SOC were large and site‐dependent. These results suggest that although the modified methods that referenced to t1 soils could reduce the biases derived from soil volume changes, they may not properly quantify SOC changes due to using unconserved reference systems. The EMMV‐t0 method provides an approach to address the two problems and is potentially useful since it enables SOC comparability and integrating SOC datasets.

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Community characteristics and soil properties of coniferous plantation forest monocultures in the early stages after close-to-nature transformation management in southern subtropical China

Abstract: Community characteristics and soil properties of coniferous plantation forest monocultures in the early stages after close鄄to鄄nature transformation management in southern subtropical China.

Cited by 13 publications

References 5 publications

The structure and soil characteristics of a Pinus tabuliformis planted forest after 60 years of natural development in North China

The structure and soil characteristics of a Pinus tabuliformis planted forest after 60 years of natural development in North China

An analysis of potential investment returns of planted forests in South China

An alternative approach to reduce algorithm‐derived biases in monitoring soil organic carbon changes

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