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1. Calcium-mediated adaptive responses to low phosphorus stress in Chinese fir

Author:
Ma, Xiangqing,   et al.   ; Rashid, Muhammad Haroon U.; Tigabu, Mulualem; Chen, Haifeng; Farooq, Taimoor Hassan; Wu, Pengfei;     Show all 6 Authors
Source:
Trees 2020 v.34 no.3 pp. 825-834
ISSN:
0931-1890
Subject:
Cunninghamia lanceolata; acid phosphatase; calcium; calcium nitrate; enzyme activity; growing media; leaves; malondialdehyde; phosphorus; phytomass; potassium dihydrogen phosphate; protein content; root crown; root growth; roots; sand; seedling growth; seedlings; surface area; trees
Abstract:
... KEY MESSAGE: Ca²⁺ induces adaptive response to low P stress through increased root growth and expansion, but plays minor or no role in remobilization of P in leaf tissues or in maintaining membrane integrity. The role of calcium (Ca²⁺) in signaling environmental stress has been demonstrated; however, its role in signaling low phosphorus (P) stress and subsequent adaptive responses in trees are lar ...
DOI:
10.1007/s00468-020-01961-4

2. Cloning, Characterization and Expression Analysis of the Phosphate Starvation Response Gene, ClPHR1, from Chinese Fir

Author:
Ma, Xiangqing,   et al.   ; Chen, Wanting; Chen, Ranhong; Zhang, Ying; Li, Jiaoyang; Tigabu, Mulualem; Li, Ming;     Show all 7 Authors
Source:
Forests 2020 v.11 no.1
ISSN:
1999-4907
Subject:
Agrobacterium; Arabidopsis thaliana; Cunninghamia lanceolata; Prunus; cell nucleus; complementary DNA; gene overexpression; genes; genetic vectors; hydrophilicity; leaves; open reading frames; phosphates; phosphorus; phylogeny; rapid amplification of cDNA ends; roots; starvation; stems; transcription factors; transgenic plants
Abstract:
... The study on the function and sequence of PHR1 (Phosphate Starvation Response gene 1) gene, which plays a central role in plant phosphorus (Pi) signal regulatory network, is of great significance to further study response mechanisms to Pi deficiency. In this work, the previously selected Pi-efficient Chinese fir clone M32 was used as research material to obtain the full-length sequence of ClPHR1 t ...
DOI:
10.3390/f11010104

3. Biochar addition to forest plantation soil enhances phosphorus availability and soil bacterial community diversity

Author:
Ma, Xiangqing,   et al.   ; Zhou, Chuifan; Heal, Kate; Tigabu, Mulualem; Xia, Lidan; Hu, Huaying; Yin, Danyang;     Show all 7 Authors
Source:
Forest ecology and management 2020 v.455 pp. 117635
ISSN:
0378-1127
Subject:
Cunninghamia lanceolata; Planctomyces; Sphingomonas; alkaline phosphatase; bacterial communities; bioavailability; biochar; biodiversity; calcium; community structure; enzyme activity; forest plantations; forest soils; leaves; nitrogen; nutrients; phosphorus; pyrolysis; ribosomal DNA; sequence analysis; soil amendments; soil bacteria; soil nutrients; soil sampling; soil treatment; soil-plant interactions; soluble phosphorus; temperature; trees; wood chips
Abstract:
... Depletion of soil nutrients is a major cause of decline in productivity of forest plantations in successive rotations. Biochar amendment in agricultural systems has been shown to yield various beneficial effects, including increasing soil phosphorus (P) availability. However, the direct and indirect effects of biochar addition on forest soil P dynamics have largely been unexplored. The objective o ...
DOI:
10.1016/j.foreco.2019.117635

4. Effects of biochar and litter on carbon and nitrogen mineralization and soil microbial community structure in a China fir plantation

Author:
Ma, Xiangqing,   et al.   ; Li, Ying; Zhou, Chuifan; Qiu, Yunxiao; Tigabu, Mulualem;     Show all 5 Authors
Source:
Journal of forestry research 2019 v.30 no.5 pp. 1913-1923
ISSN:
1007-662X
Subject:
Cunninghamia lanceolata; Gram-positive bacteria; ammonium; application rate; biochar; carbon dioxide; carbon sequestration; community structure; dissolved organic carbon; fungi; greenhouse gas emissions; microbial communities; mineralization; nitrogen; phospholipid fatty acids; soil; soil microorganisms; soil treatment; sorption
Abstract:
... To investigate the effects of biochar addition (1 or 3%) to the soil of a China fir plantation with or without litter, we conducted a 90-day incubation experiment. We also studied the C and N dynamics and the microbial community structure of the soil. In soil without litter, the application of biochar at a rate of 3% significantly decreased CO₂ emissions, while addition of 1% biochar had no effect ...
DOI:
10.1007/s11676-018-0731-5

5. Root morphology and seedling growth of three tree species in southern China in response to homogeneous and heterogeneous phosphorus supplies

Author:
Ma, Xiangqing,   et al.   ; Yan, Xiao-Li; Wang, Chen; Wu, Pengfei;     Show all 4 Authors
Source:
Trees 2019 v.33 no.5 pp. 1283-1297
ISSN:
0931-1890
Subject:
Cunninghamia lanceolata; Phoebe zhennan; Pinus massoniana; aboveground biomass; nutrient partitioning; nutrient uptake; phosphorus; root growth; root shoot ratio; roots; seedling growth; seedlings; soil; trees; China
Abstract:
... KEY MESSAGE: Trees adjust their root morphological characteristics to respond heterogeneous phosphorus conditions, and root length and root-to-shoot ratio will increase to improve phosphorus nutrient absorption in heterogeneous phosphorus soils. This study examined the responses of root morphology and seedling growth to homogeneous and heterogeneous phosphorus (P) supplies in three major tree spec ...
DOI:
10.1007/s00468-019-01858-x

6. Changes in soil physico-chemical properties following vegetation restoration mediate bacterial community composition and diversity in Changting, China

Author:
Ma, Xiangqing,   et al.   ; Hou, Xiaolong; Han, Hang; Tigabu, Mulualem; Cai, Liping; Meng, Fanrui; Liu, Aiqin;     Show all 7 Authors
Source:
Ecological engineering 2019 v.138 pp. 171-179
ISSN:
0925-8574
Subject:
Acidobacteria; Actinobacteria; Bacteroidetes; Chloroflexi; Cyanobacteria; Firmicutes; Proteobacteria; Verrucomicrobia; bacterial communities; community structure; coniferous forests; deciduous forests; ecological restoration; forest soils; grasses; land degradation; landscapes; phosphorus; ribosomal DNA; sequence analysis; soil bacteria; soil degradation; soil density; soil organic carbon; soil pH; soil sampling; soil water content; vegetation cover; China
Abstract:
... Changes in microbial communities and drivers of their composition in different restoration approaches are largely unexplored. The aim of this study was to evaluate the effects of different ecosystem restoration approaches on bacterial community diversity and whether changes in soil physico-chemical properties are driving bacterial community dynamics. Soil samples were collected from restored lands ...
DOI:
10.1016/j.ecoleng.2019.07.031

7. Tissue-specific carbon concentration, carbon stock, and distribution in Cunninghamia lanceolata (Lamb.) Hook plantations at various developmental stages in subtropical China

Author:
Ma, Xiangqing,   et al.   ; Zhou, Lili; Li, Shubin; Liu, Bo; Wu, Pengfei; Heal, Kate V.;     Show all 6 Authors
Source:
Annals of forest science 2019 v.76 no.3 pp. 70
ISSN:
1286-4560
Subject:
Cunninghamia lanceolata; belowground biomass; carbon sequestration; carbon sinks; chronosequences; coniferous forests; developmental stages; ecosystems; fine roots; forest management; guidelines; plant litter; plantations; soil organic carbon; tissues; trees; China
Abstract:
... KEY MESSAGE : Carbon (C) concentrations in Cunninghamia lanceolata (Lamb.) Hook plantations differed significantly among tissue types and were greater for aboveground than belowground tissues. Plantation C stock increased with a developmental stage from young to mature to overmature, but at all stages, the majority occurred as soil organic carbon (SOC) and was more influenced by belowground fine r ...
DOI:
10.1007/s13595-019-0851-x

8. Multivariate Discriminant Analysis of Single Seed Near Infrared Spectra for Sorting Dead-Filled and Viable Seeds of Three Pine Species: Does One Model Fit All Species?

Author:
Ma, Xiangqing,   et al.   ; Tigabu, Mulualem; Daneshvar, Abolfazl; Jingjing, Ren; Wu, Pengfei; Odén, Per Christer;     Show all 6 Authors
Source:
Forests 2019 v.10 no.6
ISSN:
1999-4907
Subject:
Pinus elliottii; Pinus taeda; absorption; calibration; discriminant analysis; drying; models; near-infrared spectroscopy; seeds; sowing
Abstract:
... Seed lots of pine species are composed of viable, dead-filled and empty seeds, and the success of complete sorting of dead-filled seeds using the conventional method (Incubation, Drying and Separation in water) is difficult to achieve; leaving a considerable scope for upgrading the sorting efficiency. The objective of this study was to evaluate the prospect of sorting viable and dead-filled seeds ...
DOI:
10.3390/f10060469

9. Soil parent material and stand development stage effects on labile soil C and N pools in Chinese fir plantations

Author:
Ma, Xiangqing,   et al.   ; Zhang, Yun; Tigabu, Mulualem; Yi, Zhigang; Li, Huitong; Zhuang, Zheng; Yang, Zhen;     Show all 7 Authors
Source:
Geoderma 2019 v.338 pp. 247-258
ISSN:
0016-7061
Subject:
Cunninghamia lanceolata; afforestation; bulk density; carbon nitrogen ratio; dissolved inorganic nitrogen; dissolved organic carbon; dissolved organic nitrogen; environmental factors; fertilizer application; forests; granite; granite soils; labile carbon; microbial biomass; microbial carbon; microbial nitrogen; nitrogen fertilizers; physicochemical properties; plantations; soil chemical properties; soil depth; soil parent materials; soil physical properties; stand development; water content; water stable soil aggregates; China
Abstract:
... Plantation development stage (forest age sequence) influences environmental conditions and litter inputs, which can modify labile C and N pools. Changes in labile C and N pools during stand development could vary considerably with soil parent material. However, empirical evidence is scarce regarding the extent of interactive effects between parent material and stand development stage on labile C a ...
DOI:
10.1016/j.geoderma.2018.11.050

10. Dynamics of major air pollutants from crop residue burning in mainland China, 2000–2014

Author:
Ma, Xiangqing,   et al.   ; Jin, Quanfeng; Wang, Guangyu; Yang, Xiajie; Guo, Futao;     Show all 5 Authors
Source:
Journal of environmental sciences (China) 2018 v.70 pp. 190-205
ISSN:
1001-0742
Subject:
air pollutants; air pollution; burning; carbon dioxide; carbon monoxide; corn; emissions; emissions factor; fuels; industry; issues and policy; nitrogen oxides; organic carbon; particulates; remote sensing; rice straw; volatile organic compounds; wheat; China
Abstract:
... Based on satellite image data and China’s Statistical Yearbooks (2000 to 2014), we estimated the total mass of crop residue burned, and the proportion of residue burned in the field vs. indoors as domestic fuel. The total emissions of various pollutants from the burning of crop residue were estimated for 2000-2014 using the emission factor method. The results indicate that the total amount of crop ...
DOI:
10.1016/j.jes.2017.11.024

11. Growth, Biomass Production and Root Development of Chinese fir in Relation to Initial Planting Density

Author:
Ma, Xiangqing,   et al.   ; Farooq, Taimoor Hassan; Wu, Wenjing; Tigabu, Mulualem; He, Zongming; Rashid, Muhammad Haroon U.; Gilani, Matoor Mohsin; Wu, Pengfei;     Show all 8 Authors
Source:
Forests 2019 v.10 no.3
ISSN:
1999-4907
Subject:
Cunninghamia lanceolata; allometry; biomass production; equations; forest plantations; mortality; plant density; planting density; root systems; roots; stand density; tree and stand measurements; tree growth; tree height; trees; understory; vegetation; China
Abstract:
... Chinese fir (Cunninghamia lanceolata (Lamb) Hook) is a commercially valuable timber species that is widely planted in southern China and accounts for 6.1% of the global plantation forests. However, appropriate planting density that ensures high plantation productivity is largely unexplored in this species. The aim of the study was to examine tree growth, biomass production, and its allocation amon ...
DOI:
10.3390/f10030236

12. Does phosphorus deficiency induce formation of root cortical aerenchyma maintaining growth of Cunninghamia lanceolata?

Author:
Ma, Xiangqing,   et al.   ; Wu, Pengfei; Lai, Huayan; Tigabu, Mulualem; Wu, Wenjing; Wang, Pan; Wang, Guangyu;     Show all 7 Authors
Source:
Trees 2018 v.32 no.6 pp. 1633-1642
ISSN:
0931-1890
Subject:
Cunninghamia lanceolata; aerenchyma; biomass; genetic variation; genotype; phosphorus; root tips; seedling growth; seedlings; soil; stems; surface area; trees
Abstract:
... KEY MESSAGE: Phosphorous (P) deficiency induces root cortical aerenchyma (RCA) formation in Chinese fir seedlings with marked genotypic variation, and the adaptive role of RCA is mainly related to root P reduction. Root cortical aerenchyma (RCA) formation in response to phosphorus (P) deficiency and its adaptive role are largely unexplored in trees. We hypothesized that RCA formation in response t ...
DOI:
10.1007/s00468-018-1739-3

13. Identification of indicators for evaluating and monitoring the effects of Chinese fir monoculture plantations on soil quality

Author:
Ma, Xiangqing,   et al.   ; Zhijun, Huang; Selvalakshmi, Selvaraj; Vasu, Duraisamy; Liu, Qingqing; Cheng, Hao; Guo, Futao;     Show all 7 Authors
Source:
Ecological indicators 2018 v.93 pp. 547-554
ISSN:
1470-160X
Subject:
Cunninghamia lanceolata; carbon sinks; data collection; environmental indicators; forest plantations; monitoring; nitrate nitrogen; nitrogen; phosphorus; principal component analysis; soil pH; soil quality; soil sampling; tropical forests; China
Abstract:
... Globally, forest conversion is known to affect soil quality. In the present study, we developed a soil quality index (SQI) to quantify the changes in soil quality due to conversion of native forests into Chinese fir (Cunninghamia lanceolata (Lamb.) Hook) plantations in southern China. We selected 11 Chinese fir stands of different ages (12-, 21-, 40-, and 97-year-old in the first rotation; 1-, 12- ...
DOI:
10.1016/j.ecolind.2018.05.034

14. Responses of Chinese fir and Schima superba seedlings to light gradients: Implications for the restoration of mixed broadleaf-conifer forests from Chinese fir monocultures

Author:
Ma, Xiangqing,   et al.   ; Liu, Bo; Liu, Qingqing; Daryanto, Stefani; Guo, Si; Huang, Zhijun; Wang, Zhengning; Wang, Lixin;     Show all 8 Authors
Source:
Forest ecology and management 2018 v.419-420 pp. 51-57
ISSN:
0378-1127
Subject:
Cunninghamia lanceolata; Schima superba; biodiversity; canopy; ecosystem services; forests; leaf area; leaf mass; light intensity; plantations; planting; root shoot ratio; seedling growth; seedlings; shade tolerance; solar radiation; timber production; trees; underplanting; China
Abstract:
... Although Chinese fir (Cunninghamia lanceolata (Lamb.) Hook) plantations are widely grown for timber production in southern China, they have low biodiversity and provide limited ecosystem services. To address this problem, C. lanceolata are increasingly mixed with broadleaf Schima superba Gardn. & Champ. (Theaceae). The success of these mixed plantations relies on introducing each species in the ap ...
DOI:
10.1016/j.foreco.2018.03.033

15. Anthropogenic and Biophysical Factors Associated with Vegetation Restoration in Changting, China

Author:
Ma, Xiangqing,   et al.   ; Wang, Wenhui; Moazzam Nizami, Syed; Tian, Chao; Guo, Futao;     Show all 5 Authors
Source:
Forests 2018 v.9 no.6
ISSN:
1999-4907
Subject:
climatic factors; ecological restoration; economic factors; economic investment; fractional vegetation cover; infrastructure; issues and policy; normalized difference vegetation index; regression analysis; soil; soil conservation; soil erosion; temperature; topography; water conservation; China
Abstract:
... Changting has been promoted by the Chinese government as a demonstration for the soil and water conservation works in recent years. As the experience in Changting is now being explored and summarized and will be further promoted to the nation, it is important to understand the factors affecting the vegetation restoration process. Random forest and multiple linear regression approaches were applied ...
DOI:
10.3390/f9060306

16. Effects of ageing and successive slash-and-burn practice on the chemical composition of charcoal and yields of stable carbon

Author:
Ma, Xiangqing,   et al.   ; Selvalakshmi, Selvaraj; de la Rosa, José M.; Zhijun, Huang; Guo, Futao;     Show all 5 Authors
Source:
Catena 2018 v.162 pp. 141-147
ISSN:
0341-8162
Subject:
Cunninghamia lanceolata; carbon; carbon cycle; charcoal; combustion; conifers; fires; nuclear magnetic resonance spectroscopy; organic matter; plantations; prescribed burning; soil; soot; stable isotopes; stand age; China
Abstract:
... Chinese fir (Cunninghamia lanceolata) plantations cover over 12Mha in the southeast provinces of China. The traditional conditioning of fields of this conifer involves the slash-and-burn practice. As a result of this practice, pyrogenic carbon (PyC) is produced by the incomplete combustion of organic matter; this includes a continuum of materials ranging from partially charred biomass and charcoal ...
DOI:
10.1016/j.catena.2017.11.028

17. Pb stress effects on leaf chlorophyll fluorescence, antioxidative enzyme activities, and organic acid contents of Pogonatherum crinitum seedlings

Author:
Ma, Xiangqing,   et al.   ; Hou, Xiaolong; Han, Hang; Cai, Liping; Liu, Aiqin; Zhou, Chuifan; Wang, Guo; Meng, Fanrui;     Show all 8 Authors
Source:
Flora 2018 v.240 pp. 82-88
ISSN:
0367-2530
Subject:
chlorophyll; enzyme activity; grasses; greenhouse experimentation; hyperaccumulators; lead; leaves; malic acid; malondialdehyde; oxygen; perennials; peroxidase; photochemistry; photosystem II; roots; seedlings; soil; superoxide dismutase; surveys; toxicity
Abstract:
... Pogonatherum crinitum (Thunb.) Kunth is a lead (Pb) tolerant, perennial grass and a hyperaccumulator of Pb based on field surveys and greenhouse experiments. However, only few attempts have been made to understand the response mechanisms of P. crinitum to high Pb concentrations. In this study, we measured leaf chlorophyll fluorescence, antioxidative enzyme activities, organic acid contents, and Pb ...
DOI:
10.1016/j.flora.2018.01.006

18. Seedling emergence and early growth of Chinese fir under different light levels and seed positions: implications for natural regeneration

Author:
Ma, Xiangqing,   et al.   ; Liu, Bo; Liu, Qingqing; Daryanto, Stefani; Guo, Si; Wang, Lixin; Wang, Zhengning;     Show all 7 Authors
Source:
Canadian journal of forest research 2018 v.48 no.9 pp. 1034-1041
ISSN:
1208-6037
Subject:
Cunninghamia lanceolata; conifers; leaf mass; natural regeneration; seedling emergence; seedlings; soil; solar radiation; sowing; understory; China
Abstract:
... Chinese fir, Cunninghamia lanceolata (Lamb.) Hook. (Taxodiaceae), is an evergreen conifer primarily distributed in southern China. This species exhibits very poor natural regeneration, possibly due to low light and a thick litter layer. To improve the understanding of the natural regeneration capacity of Chinese fir, in this study, we conducted a shade house experiment to determine the optimum lig ...
DOI:
10.1139/cjfr-2017-0412

19. Genetic diversity and relationships of ancient Chinese fir (Cunninghamia lanceolata) genotypes revealed by sequence-related amplified polymorphism markers

Author:
Ma, Xiangqing,   et al.   ; Li, Ming; Chen, Xizhen; Huang, Musheng; Wu, Pengfei;     Show all 5 Authors
Source:
Genetic resources and crop evolution 2017 v.64 no.5 pp. 1087-1099
ISSN:
0925-9864
Subject:
Cunninghamia lanceolata; biomass; genetic distance; genetic markers; genetic variation; genotype; germplasm; in situ conservation; provenance; trees; China
Abstract:
... Some more than a century old Chinese fir genotypes with high biomass that are now rare in China were historically called “the king of Chinese fir”. The genetic diversity and relationships of those ancient Chinese fir genotypes were investigated using morphological analysis and sequence-related amplified polymorphism markers. The morphological analysis indicated that the tree volume parameter had t ...
DOI:
10.1007/s10722-016-0428-6

20. Influence of long-term successive rotations and stand age of Chinese fir (Cunninghamia lanceolata) plantations on soil properties

Author:
Ma, Xiangqing,   et al.   ; Selvalakshmi, Selvaraj; Vasu, Duraisamy; Zhijun, Huang; Guo, Futao;     Show all 5 Authors
Source:
Geoderma 2017
ISSN:
0016-7061
Subject:
plantations; soil organic carbon; nitrogen; nitrogen cycle; soil properties; Cunninghamia lanceolata; cutting; soil depth; soil quality; carbon nitrogen ratio; soil fertility; soil sampling; economic valuation
Abstract:
... Tree plantations contribute towards balancing global carbon (C) and nitrogen (N) cycles, with the C:N ratio being a key factor determining soil fertility in plantations. In the present study, we investigated how the management practices of Chinese fir (Cunninghamia lanceolata) plantations affect soil organic carbon (SOC), C:N ratio and soil quality. We assessed how these soil properties vary for s ...
DOI:
10.1016/j.geoderma.2017.07.014