Testing the modified Rothamsted Carbon Model for paddy soils against the results from long-term experiments in southern China

Jiang, Guiying; Shirato, Yasuhito; Xu, Minggang; Yagasaki, Yasumi; Huang, Qinghai; Zu-zhang, LI; Nie, Jun; Shi, Xiaojun

doi:10.1080/00380768.2012.733923

Cited by 12 publications

(3 citation statements)

References 21 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…We used the long-term data sets to validate the accuracy of the Rothamsted carbon (RothC) model (Coleman & Jenkinson, 1999) on the subset of field trial sites (n = 10), since this type of experiments had not been done here previously (Jiang et al, 2013(Jiang et al, , 2014; Figure S3). We then used climate change model scenarios as input weather files to the RothC model to enable future SOC predictions based on climate change (Jiang et al, 2014).…”

Section: Soil Carbon Modelmentioning

confidence: 99%

Manure and Mineral Fertilizer Effects on Crop Yield and Soil Carbon Sequestration: A Meta‐Analysis and Modeling Across China

Jiang

Zhang

et al. 2018

Global Biogeochemical Cycles

Self Cite

View full text Add to dashboard Cite

Manure application to soil has declined globally due to increased availability of mineral fertilizers. However, mineral fertilizer overuse has caused serious consequences for soil quality and the environment. We analyzed the results of 20 long‐term field trials (22–32 years, start year [ranged from 1980 to 1990] to 2012) and combined this with a climate change model and soil organic carbon (SOC) model to quantify the importance of manure and mineral fertilizers for grain yield and SOC sequestration across croplands in China. During the past three decades mineral fertilizers have increased grain yield for 91–184% but had minor impact on SOC sequestration (4–16%). In contrast, manure applied with mineral fertilizer increased grain yield by only 6–19% but strongly raised the SOC content (9–39%) compared with mineral fertilizer. Modeling (to the year 2099) indicated that manure used in combination with mineral fertilizers will increase future C sequestration in soils across China by 2,086 Tg C and by 2,482 Tg C based on current net primary productivity with no climate change and on increased net primary productivity with climate change scenarios, respectively. This corresponds to an additional 43–58% increase in C sequestration compared to mineral fertilizers only. The manure efficiency for C sequestration in soil was about 9.6% of C input and decreased with increasing SOC content. To maintain the current SOC content (i.e., 2010), 11 t·ha−1·year−1 fresh manure or 4.8 t·ha−1·year−1 dry maize straw would be required. We conclude that the regular use of manure with mineral fertilizers is essential for the long‐term dual functions of soil for food production and SOC sequestration.

show abstract

Section: Soil Carbon Modelmentioning

confidence: 99%

Manure and Mineral Fertilizer Effects on Crop Yield and Soil Carbon Sequestration: A Meta‐Analysis and Modeling Across China

Jiang

Zhang

et al. 2018

Global Biogeochemical Cycles

Self Cite

View full text Add to dashboard Cite

show abstract

“…Y g and Y s are the rice grain and straw yields (kg ha −1 ), respectively. Thirty percent is the relative ratio of root biomass to grain and straw biomass of rice (Liang et al., 2019), 5.6% is the relative ratio of stubble biomass to grain and straw biomass of rice (Jiang et al., 2013), 14% is the average moisture content of air‐dried plant samples, and 0.418 is the proportion of organic C content of dried biomass for rice. C manure , W , and A are the organic C content (52 g kg −1 ), water content (88%), and fresh base weight (kg ha −1 ) of manure, respectively.…”

Section: Methodsmentioning

confidence: 99%

Carbon sequestration efficiency in red paddy soil originating from different parent materials in Jiangxi, China

Liao

Liang

et al. 2022

Soil Science Soc of Amer J

View full text Add to dashboard Cite

Red paddy soils in southern China originate from various parent materials; however, the respective characteristics of C sequestration efficiency (CSE) are unclear. Here, three cultivated land monitoring sites in Jiangxi province were examined, with soils originating from argillaceous rock, quaternary red clay, and granite. We assessed crop yield and soil physicochemical properties over several years and measured soil organic C (SOC) storage, SOC fractions, and chemical structure in 2019 to test differences in CSE characteristics, SOC structure stability, and factors affecting red paddy soils. The change in SOC storage under long‐term fertilization showed the following descending order: red paddy soils derived from argillaceous rock (1.10 t ha−1 yr−1) > granite (0.75 t ha−1 yr−1) > quaternary red clay (0.12 t ha−1 yr−1); the order of CSE was granite (0.24) > argillaceous rock (0.22) > quaternary red clay (0.08). Red paddy soil from argillaceous rock had the highest proportion of recalcitrant organic C (ROC) and SOC stability (aromaticity 0.45). Red paddy soil originating from granite had the lowest ROC proportion (54%) and SOC stability (aromaticity 0.35). Soil properties, organic C input, and amount of N fertilizer explained 53.6% of the total CSE variation. SOC, pH, and organic C input were the main factors affecting CSE, with relative contribution rates of 36.4, 6.2, and 6.3%, respectively. pH (30.4%) was the main factor affecting CSE variation in argillaceous rock paddy soil. Soil organic C (52.2%) was the main factor explain CSE variation in quaternary red clay‐derived red paddy soil. Soil organic C and organic C input explained 39.4 and 21.3% of the variation in CSE in granite‐derived paddy soils. The parent material can directly or indirectly affect CSE through soil texture.

show abstract

“…Predictions of the modified version of the RothC for paddy soils (RothC-26.3_p), with decomposition rate constants set at 0.2 and 0.6 times smaller than the original RothC-26.3 for submerged and drained periods, respectively, were compared with the observed results of five long-term field studies in southern China (Jiang et al 2013). These field studies included two paddy-upland rotation sites (Chongqing and Wuchang) and three double rice cropping sites (Wangcheng, Nanchang, and Jinxian).…”

Section: Validation Of the Rothc In Chinamentioning

confidence: 99%

Use of models to evaluate carbon sequestration in agricultural soils

Shirato

2019

Soil Science and Plant Nutrition

Self Cite

View full text Add to dashboard Cite

The Rothamsted Carbon (RothC) model, which is one of widely used soil carbon (C) models, was validated against long-term experimental datasets in Japan and modified to suit Andosols and paddy soils reflecting unique soil C turnover mechanisms in these soils. Nationwide soil C calculation system was developed by combining these modified models and spatial model input data such as weather, soil type, land use, and agricultural activities. The model was validated in China and Thailand by using long-term field experimental datasets, too. Further studies especially in tropical Asia will be needed. Matching conceptual model C pools with measurable fractions have been big challenges. Using various plant materials, two conceptual pools of plant litter, decomposable plant material (DPM) and resistant plant material (RPM), in the RothC were successfully identified. It was achieved by comparing the default proportions of DPM and RPM pools in the RothC and proportions in plant material fractions determined by two-step acid hydrolysis with H 2 SO 4. The trial to match all of five C pools in the model, however, remains unachieved though a study was conducted comparing not only the size of C pools but mean residence time of the pools. A web-based decision support tool called 'Visualization of CO 2 absorption by soils' was developed. This allows users to easily calculate changes in soil C, CH 4 and N 2 O emissions, and fossil fuel consumption. With this tool, farmers can see how to improve the environmental sustainability of their products and this tool may help spread mitigation options widely. Soil C sequestration can help achieve climate change mitigation and sustainable agricultural production. Importance of long-term field observations should be more highlighted because long-term experiments have supported the development of modeling approaches. I hope models will be more widely used by decision makers. Collaboration between modeling and monitoring studies is important.

show abstract

Testing the modified Rothamsted Carbon Model for paddy soils against the results from long-term experiments in southern China

Cited by 12 publications

References 21 publications

Manure and Mineral Fertilizer Effects on Crop Yield and Soil Carbon Sequestration: A Meta‐Analysis and Modeling Across China

Manure and Mineral Fertilizer Effects on Crop Yield and Soil Carbon Sequestration: A Meta‐Analysis and Modeling Across China

Carbon sequestration efficiency in red paddy soil originating from different parent materials in Jiangxi, China

Use of models to evaluate carbon sequestration in agricultural soils

Contact Info

Product

Resources

About