Shenggong Li

Chinese Academy of Sciences

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Guirui Yu

Institute of Geographic Sciences and Natural Resources Research

Liang Kou

Institute of Geographic Sciences and Natural Resources Research

Zhongmin Hu

Hainan University

Huimin Wang

Institute of Geographic Sciences and Natural Resources Research

Xiaomin Sun

Chinese Academy of Sciences

Xuefa Wen

Chinese Academy of Sciences

Leiming Zhang

Environment and Climate Change Canada

Xiaoli Fu

Institute of Geographic Sciences and Natural Resources Research

Jun Asanuma

University of Tsukuba

Wenlong Gao

Ministry of Agriculture and Rural Affairs

Cooperative Institutions

Chinese Academy of Sciences

375

University of Chinese Academy of Sciences

205

Institute of Geographic Sciences and Natural Resources Research

172

Peking University

Institute of Botany

Central South University

Northwest A&F University

Sun Yat-sen University

Ministry of Agriculture and Rural Affairs

Chinese Academy of Agricultural Sciences

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Decomposition of leaf mixtures and absorptive-root mixtures synchronously changes with deposition of nitrogen and phosphorus

Soil Biology and Biochemistry (2019)

Lei Jiang Liang Kou Shenggong Li

Pinus massoniana

10.1016/j.soilbio.2019.107602

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Citations (18)

Water balance for a Mongolian steppe and its environmental constraints

Shenggong Li Asanuma Jun Ayumi Kotani Gombo Davaa Oyunbaartar Dambaravjaa

6km 2 ) (World Resources Institute, 2003). For the semiarid and arid ecosystems like Mongolian steppe, water stress is a limiting factor for plant growth, and vegetation productivity is tightly associated with the multi-year precipitation variations. Therefore, information about water vapor exchange above the steppe ecosystem is crucial for an improved understanding of the coupling among water and carbon cycling, steppe management, and climate change in Mongolia. The eddy covariance (EC) technique is now widely used for long-term continuous flux measurements across the world (Baldocchi, 2003). In this study, we used the EC technique to quantify water vapor and energy fluxes above a steppe in Mongolia. II Materials and methods The study site is located at Kherlenbayan-Ulaan (KBU), the Hentiy province of Mongolia (lat. 47° 12.838' N, long. 108° 44.240' E, 1235 m a.m.s.l.) (Fig. 1). It was built in March 2003 as a component of the RAISE project for long-term measurements of microclimatic variables, water vapor, CO2 and energy fluxes. The climate is continental in the temperate zone. Average annual air temperature is 1.2 °C and average annual precipitation is 196 mm. The soil is the typical Chestnut soil. The vegetation is dominated by temperate C3

Steppe

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Citations (1)

[Effects of nitrogen addition on available nitrogen content and acidification in cold-temperate coniferous forest soil in the growing season].

PubMed (2014)

Gao-Qi Chen Wa-Li Fu Yachen Luo Wenlong Gao Shenggong Li

Based on a low-level and multi-form N addition control experiment, this study took cold-temperate coniferous forest in Daxing'an Ling as the research object. After long-term and continuous nitrogen addition in situ, the available nitrogen (NH4(+) -N & NO3(-) -N) contents and pH values of the soil (0-10 cm) were measured in the early growing season (May) and the peak growing season (August) in 2010, 2012 and 2013. The results showed that, the available nitrogen in the early and peak growing seasons was mainly NH4(+) -N which accounted for over 96% of the inorganic nitrogen content, while the content of NO3(-) -N was very low. With the time extension of nitrogen addition, the effects of nitrogen addition on the NH4(+) -N content in 0-10 cm soil were more obvious in the early growing season than that in the peak growing season, and the NH4(+) -N content was mainly affected by the type of nitrogen addition. On the contrary, the NO3(-) -N content in 0-10 cm soil was higher in the peak growing season than that in the early growing season. The effect of N input was obvious on NO3(-) -N content in both early and peak growing seasons, and low nitrogen treatment tended to promote the enrichment of NO3(-) -N. As time went on, the response of NH4(+) -N and NO3(-) -N content to N addition was changed from insignificant in the early stage to significant in the late stage. N addition had a significant impact on the pH value of the 0-10 cm soil in the early and peak growing seasons. The pH values of the soil with low nitrogen treatment and the soil in the peak growing season were relatively lower. With the extension of the nitrogen addition time, the response of pH value also turned from insignificant in the early stage to significant in the late stage. Because of the long-term and continuous nitrogen addition, the 0 - 10 cm soil in this cold-temperate coniferous forest was obviously acidified.

Growing season

Temperate forest

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The thawing-freezing processes and soil moisture distribution of the steppe in Central Mongolian Plateau.

Acta Pedologica Sinica (2009)

Shuai Liu Guirui Yu Jun Asanuma Michiaki Sugita Zhang Leiming

Steppe

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Drivers of soil net nitrogen mineralization in the temperate grasslands in Inner Mongolia, China

Nutrient Cycling in Agroecosystems (2009)

Xingren Liu Yunshe Dong Jianqiang Ren Shenggong Li

Growing season

Stipa

Nitrogen Cycle

10.1007/s10705-009-9312-5

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Citations (48)

Vertical distribution of stable isotopic composition in atmospheric water vapor and subsurface water in grassland and forest sites, eastern Mongolia

Journal of Hydrology (2006)

Maki Tsujimura Lisa Sasaki Tsutomu Yamanaka Atsuko Sugimoto Shenggong Li

δ18O

10.1016/j.jhydrol.2006.07.025

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Citations (42)

Spatio-Temporal Variability of Soil Respiration of Forest Ecosystems in China: Influencing Factors and Evaluation Model

Environmental Management (2010)

Zemei Zheng Guirui Yu Xiaomin Sun Shenggong Li Yuesi Wang

Soil carbon

Soil respiration

10.1007/s00267-010-9509-z

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Citations (32)

New Forest Aboveground Biomass Maps of China Integrating Multiple Datasets

Remote Sensing (2021)

Zhongbing Chang Sanaa Hobeichi Ying‐Ping Wang Xuli Tang Gab Abramowitz

Mapping the spatial variation of forest aboveground biomass (AGB) at the national or regional scale is important for estimating carbon emissions and removals and contributing to global stocktake and balancing the carbon budget. Recently, several gridded forest AGB products have been produced for China by integrating remote sensing data and field measurements, yet significant discrepancies remain among these products in their estimated AGB carbon, varying from 5.04 to 9.81 Pg C. To reduce this uncertainty, here, we first compiled independent, high-quality field measurements of AGB using a systematic and consistent protocol across China from 2011 to 2015. We applied two different approaches, an optimal weighting technique (WT) and a random forest regression method (RF), to develop two observationally constrained hybrid forest AGB products in China by integrating five existing AGB products. The WT method uses a linear combination of the five existing AGB products with weightings that minimize biases with respect to the field measurements, and the RF method uses decision trees to predict a hybrid AGB map by minimizing the bias and variance with respect to the field measurements. The forest AGB stock in China was 7.73 Pg C for the WT estimates and 8.13 Pg C for the RF estimates. Evaluation with the field measurements showed that the two hybrid AGB products had a lower RMSE (29.6 and 24.3 Mg/ha) and bias (−4.6 and −3.8 Mg/ha) than all five participating AGB datasets. Our study demonstrated both the WT and RF methods can be used to harmonize existing AGB maps with field measurements to improve the spatial variability and reduce the uncertainty of carbon stocks. The new spatial AGB maps of China can be used to improve estimates of carbon emissions and removals at the national and subnational scales.

10.3390/rs13152892

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Citations (19)

Geographical statistical assessments of carbon fluxes in terrestrial ecosystems of China: Results from upscaling network observations

Global and Planetary Change (2014)

Xianjin Zhu Guirui Yu Honglin He Qiufeng Wang Zhi Chen

Carbon sink

Carbon flux

Terrestrial ecosystem

Ecosystem respiration

Sink (geography)

10.1016/j.gloplacha.2014.04.003