Comparative study on active soil organic matter in Chinese fir plantation and native broad-leaved forest in subtropical China

2005 ◽  
Vol 16 (1) ◽  
pp. 23-26 ◽  
Author(s):  
Wang Qing-kui ◽  
Wang Si-long ◽  
Deng Shi-jian
Keyword(s):  
Organic Matter ◽  
Soil Organic Matter ◽  
Comparative Study ◽  
Chinese Fir ◽  
Subtropical China ◽  
Broad Leaved Forest ◽  
Chinese Fir Plantation ◽  
Leaved Forest

scholarly journals Effect of Stand Density and Soil Layer on Soil Nutrients of a 37-year-old Cunninghamia lanceolata Plantation in Naxi, Sichuan Province, China

2019 ◽  
Vol 11 (19) ◽  
pp. 5410 ◽  
Author(s):  
Jie Lei ◽  
Hailun Du ◽  
Aiguo Duan ◽  
Jianguo Zhang
Keyword(s):  
Organic Matter ◽  
Soil Organic Matter ◽  
Soil Nutrient ◽  
Stand Density ◽  
Chinese Fir ◽  
Understory Vegetation ◽  
Cunninghamia Lanceolata ◽  
Available P ◽  
Low Density ◽  
Soil Layers

In order to study the characteristics of soil nutrient elements and the changes in biomass under different densities and soil layers of forest stand, this paper considers Chinese fir (Cunninghamia lanceolata (Lamb.) Hook) density test forests with five densities (A: 1667 trees·ha−1; B: 3333 trees·ha−1; C: 5000 trees·ha−1; D: 6667 trees·ha−1; E: 10,000 trees·ha−1) as the research objects, located in Naxi District, Sichuan Province, China. Eleven soil physical and chemical property indicators, understory vegetation, and litter biomass were measured. The results were as follows: (1) The stand density had a significant effect on the soil nutrient content, understory vegetation, and litter biomass. A low density is conducive to the accumulation of soil organic matter, hydrolytic N, available P, available K, and total Ca. (2) With the increase in soil depth, the contents of soil organic matter, total N, hydrolytic N, and total P decreased gradually; pH and total Ca decreased gradually; and available P showed a trend of decrease-up-decrease. The soil layers had no significant effect on the total K, total Fe, and total Mg concentrations. (3) Low density (density A or B) was found to be beneficial to the growth of undergrowth vegetation and forest trees, the return of nutrients, long-term soil maintenance, and the stable high yield of Chinese fir plantations.

Harvest residue management effects on tree growth and ecosystem carbon in a Chinese fir plantation in subtropical China

2012 ◽  
Vol 364 (1-2) ◽  
pp. 303-314 ◽  
Author(s):  
Zhiqun Huang ◽  
Zongming He ◽  
Xiaohua Wan ◽  
Zhenhong Hu ◽  
Shaohui Fan ◽  
...  
Keyword(s):  
Tree Growth ◽  
Chinese Fir ◽  
Residue Management ◽  
Subtropical China ◽  
Ecosystem Carbon ◽  
Chinese Fir Plantation ◽  
Management Effects ◽  
Harvest Residue

scholarly journals Diagnosing Phosphorus Limitation in Subtropical Forests in China under Climate Warming

2019 ◽  
Vol 11 (8) ◽  
pp. 2202
Author(s):  
Na Wang ◽  
Mei Huang ◽  
Fengxue Gu ◽  
Huimin Yan ◽  
Shaoqiang Wang ◽  
...  
Keyword(s):  
Climate Warming ◽  
Net Primary Productivity ◽  
Interaction Model ◽  
Phosphorus Limitation ◽  
Subtropical China ◽  
Soil P ◽  
P Limitation ◽  
Forest Sites ◽  
Broad Leaved Forest ◽  
Leaved Forest

Phosphorus (P) is a fundamental component of plant organisms. Most of the Earth System Models (ESMs) project increases in future Net Primary Productivity (NPP) due to climate warming. However, large uncertainty exists in projected NPP due to future P limitation. Subtropical China is a region with high vegetation NPP, but its forests are mostly P limited. In this study, we used the simulations of Atmospheric-Vegetation Interaction Model 2 (AVIM2) to diagnose the P limitation in forests in this region, and found that climate warming in the period of 1951–2010 had enhanced P limitation. The P demand during 1981–2010 for Evergreen Broad-leaved Forest (EBF) and Evergreen Needle-leaved Forest (ENF) are 1.67 and 1.8 times than that during 1951–1980, respectively. The observed current Available Soil P (ASP) density in 4 representative forest sites in subtropical China varied between 940 mg · m − 2 and 2365 mg · m − 2 , and the P demands account for 0.86% to 25.5% of the ASP for the period of 1951–2010. Future P demands are estimated to account for 3.2% to 68.3% of the current ASP at the end of this century for RCP8.5. Therefore, forests, especially plantations, in subtropical China are facing high risks of P limitation.

scholarly journals A comparative study of analytical methodologies to determine the soil organic matter content of Lithuanian Eutric Albeluvisols

Geoderma ◽  
2006 ◽  
Vol 136 (3-4) ◽  
pp. 763-773 ◽  
Author(s):  
Benediktas Jankauskas ◽  
Alvyra Slepetiene ◽  
Genovaite Jankauskiene ◽  
Michael A. Fullen ◽  
Colin A. Booth
Keyword(s):  
Organic Matter ◽  
Soil Organic Matter ◽  
Comparative Study ◽  
Organic Matter Content ◽  
Matter Content ◽  
Soil Organic Matter Content

Phylogeographic history of broad-leaved forest plants in subtropical China

2017 ◽  
Vol 37 (17) ◽  
Author(s):  
叶俊伟 YE Junwei ◽  
张阳 ZHANG Yang ◽  
王晓娟 WANG Xiaojuan
Keyword(s):  
Subtropical China ◽  
Broad Leaved Forest ◽  
Phylogeographic History ◽  
History Of ◽  
Forest Plants ◽  
Leaved Forest

scholarly journals Influence of Vegetation Restoration on Soil Hydraulic Properties in South China

Forests ◽  
2020 ◽  
Vol 11 (10) ◽  
pp. 1111 ◽  
Author(s):  
Peiling Liu ◽  
Xiaodong Liu ◽  
Yuhang Dai ◽  
Yingjie Feng ◽  
Qianmei Zhang ◽  
...  
Keyword(s):  
South China ◽  
Hydraulic Properties ◽  
Pinus Massoniana ◽  
Vegetation Restoration ◽  
Soil Hydraulic Properties ◽  
Subtropical China ◽  
Broad Leaved Forest ◽  
Soil Hydraulic ◽  
Water Holding ◽  
Leaved Forest

Over the past several decades, vegetation restoration has been carried out extensively in South China. Theoretically, the process of vegetation restoration is usually accompanied by changes in soil properties. However, the effects of vegetation restoration on soil hydraulic properties are poorly documented in humid subtropical China. In this study, we compared soil hydraulic properties across three undisturbed subtropical forests, i.e., Pinus massoniana forest (PF), mixed Pinus massoniana/broad-leaved forest (MF), and monsoon evergreen broad-leaved forest (BF), which represented a vegetation restoration sequence in South China. Our results showed that vegetation restoration decreased the bulk density while increasing the total porosity and the soil organic matter (SOM). The clay content and capillary porosity of soil in the middle- and late-recovery-stage forests were significantly higher than those in the early stage, which was consistent with the soil water-holding capacity. The saturated hydraulic conductivity (KS) values of BF were always significantly higher than those of the other forests. In the whole soil profile, the water-holding capacity and KS in the topsoil (above 30 cm depth) were significantly higher than those in the deep soil for all forests. Further analyses indicated that the SOM was the main factor that affected KS, and the relationship of them could be fitted by a linear equation. Overall, our study revealed vegetation restoration ameliorates soil hydraulic properties in humid subtropical China. And the role of SOM in improving soil hydraulic properties should be emphasized in future forest ecosystem management.

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