Article
Agronomy
Man Zhang, Jiale Han, Jian Jiao, Jianqiao Han, Xiaoli Zhao, Kexin Hu, Yanhong Kang, Muhammad Tauseef Jaffar, Wei Qin
Summary: This study investigated the effects of different land-use systems and soil types on soil organic carbon pools and soil aggregation in the Sanjiang Plain in northeast China. The results showed that land-use systems had significant effects on soil properties, while soil types primarily influenced soil organic carbon content. The effects of different land-use systems on soil aggregation varied, with grassland having the largest impact.
Article
Ecology
Edward J. Primka, Thomas S. Adams, Alexandra Buck, Brandon Forsythe, Jeremy Harper, Marissa Kopp, Jason Kaye, David M. Eissenstat
Summary: The contribution of root activity to soil CO2 efflux remains uncertain. This study found that fine-root dynamics have limited impact on the variability of soil CO2 efflux, while fine-root mortality effects on soil CO2 efflux are strongly tied to soil temperature and fluctuations in fine-root presence or standing mass independent of temperature and moisture have little effect on soil CO2 efflux rates.
Article
Soil Science
Guopeng Wang, Qihua Ke, Keli Zhang, Yetong Li, Hongyuan Liu, Yue Yu, Qianhong Ma
Summary: Cultivation significantly affects the freeze-thaw process in soil, resulting in more intense freeze-thaw cycles, longer durations, and higher thermal transfer efficiency compared to uncultivated grassland and woodland.
SOIL & TILLAGE RESEARCH
(2023)
Article
Forestry
Shuai Wang, Bol Roland, Kabindra Adhikari, Qianlai Zhuang, Xinxin Jin, Fengkui Qian
Summary: This study compared four models and found that the BRT model was the most accurate for predicting soil organic carbon (SOC) stocks in Northeast China. The study also identified the main environmental factors influencing SOC stocks and found that SOC increased by 471 Tg C over the past 25 years. The results have important implications for forestry management and ecological restoration.
Article
Ecology
Marissa Kopp, Jason Kaye, Yuting He Smeglin, Thomas Adams, Edward J. Primka, Brosi Bradley, Yuning Shi, David Eissenstat
Summary: The spatiotemporal heterogeneity in soil CO2 efflux is crucial for understanding global carbon cycles. By incorporating remotely sensible terrain variables, regression models of spatiotemporal variation in CO2 efflux can be improved. This can lead to better sampling and modeling of CO2 efflux, as well as more accurate carbon budget estimation.
Article
Engineering, Civil
Yanxin Li, Deping Liu, Tianxiao Li, Qiang Fu, Dong Liu, Renjie Hou, Fanxiang Meng, Mo Li, Qinglin Li
Summary: This study explores the relationship between snow cover and spring soil moisture in different land use types in Northeast China. The results show that snow cover significantly impacts farmland soil moisture, while there is little correlation between snow cover parameters and soil moisture in woodlands and grasslands. Future climate warming may introduce drought risk to woodland and grassland areas, requiring advance preparations, while farmland areas will continue to maintain appropriate soil moisture, which is beneficial for agricultural development.
JOURNAL OF HYDROLOGY
(2022)
Article
Soil Science
Hao Wang, Guang-hui Zhang
Summary: Seasonal variations in soil erodibility indices were detected in different land use types on the Loess Plateau, with soil cohesion, saturated conductivity, drop impact, soil aggregate size, penetration resistance, and erodibility index generally increasing, while erodibility K factor decreasing. These changes were attributed to variations in biological soil crust thickness, plant litter density, root mass density, soil organic matter content, and soil bulk density over the course of one growing season.
Article
Agriculture, Multidisciplinary
Yanxing He, Fengbao Zhang, Mingyi Yang, Xuantian Li, Zhengang Wang
Summary: Long-term soil erosion and cultivation result in declines of soil organic carbon (SOC) and degradation of soil function. This study investigated the variations of SOC and its fractions (CPOM-C, FPOM-C, and MAOM-C) in sloping farmland and their relationship with soil erosion in Northeastern China. The results showed that erosion had significant effects on SOC fractions, with MAOM-C being the most affected. Soil erosion not only induced the loss of SOC fractions but also transformed their proportional distribution and affected the functions of SOC. Proper fertilization should be adapted for farmland with a long history of cultivation to achieve sustainable development of black soil resources.
AGRICULTURE ECOSYSTEMS & ENVIRONMENT
(2023)
Article
Environmental Sciences
Xiqiang Wang, Rensheng Chen
Summary: This study investigates the heat exchange between the shallow soil layer and the atmosphere over the Qinghai-Tibetan Plateau using a reanalysis dataset. It evaluates the performance of four widely used reanalysis data products in estimating Delta T and selects the ERA5-Land product for further analysis. The study reveals the spatial and temporal variations of Delta T on the plateau and provides important information for understanding land-atmosphere thermal interactions and their impacts on regional ecological diversity, hydrology, agriculture, and infrastructure stability.
Article
Agronomy
Wenying Yang, Mengjie Zhang, Fengbin Song, Shengqun Liu, Xiangnan Li, Xiancan Zhu
Summary: The black soil region of northeast China serves as a crucial production base for commercial grain. Arbuscular mycorrhizal fungi (AMF) were found to vary in diversity and composition between farmland and woodland in this region, with soil pH, invertase, nitrogen, phosphorus, and soil organic carbon (SOC) contents influencing their community composition. The study also showed a decrease in AMF diversity with higher levels of SOC and phosphorus in the soil.
Article
Environmental Sciences
Yingbin Deng, Renrong Chen, Yichun Xie, Jianhui Xu, Ji Yang, Wenyue Liao
Summary: This study investigated the impact of different types of building roofs on urban heat islands, finding significant differences in mean land surface temperatures among roof types during the hot season compared to the cool season, with varying degrees of impact on land surface temperatures. The contribution of roof types to land surface temperature variance was more substantial during the cool season.
Article
Agronomy
Md. Noor E. Alam Siddique, Lisa Lobry de Bruyn, Chris N. Guppy, Yui Osanai
Summary: The study compared the effects of different physiographic and land types on soil organic carbon content and pH, finding a significant increase in SOC content over 20 years, while soil pH decreased. The influence of land type on SOC content was greater than physiography, and the impact of land management on SOC content and pH remains unclear.
Article
Environmental Sciences
Wanxue Han, Fenghua Wang, Linqi Zhang, Huicheng Zhao, Yuchong Zheng, Ruibo Sun, Liang Meng
Summary: The excessive use of nitrogen fertilizer has led to serious environmental problems in the North China Plain. This study investigated the variations in soil bacterial communities and denitrifiers in subsoils under different land-use types. The results showed that NO3--N accumulated in the deeper soil layers in apple orchards, increasing the risk of leaching. The soil bacterial community structure and denitrifier abundance varied with soil depth and land-use type, highlighting the importance of subsoils in mitigating nitrate leaching.
JOURNAL OF SOILS AND SEDIMENTS
(2023)
Article
Soil Science
Caiqing Qin, Si-Liang Li, Guang-Hui Yu, Adrian M. Bass, Fu-Jun Yue, Sheng Xu
Summary: Soil in karst zones plays a crucial role in balancing the global carbon budget and regulating climate change. This study investigates the vertical variation of soil carbon and its response to land-use change in a typical karst region in SW China. The results highlight the dynamic nature of soil carbon in karst zones and the need to consider it in estimating carbon sink and global carbon budget.
Article
Environmental Sciences
Jie Tang, Gang Liu, Yun Xie, Yongqiu Wu, Daan Wang, Yan Gao, Lingqin Meng
Summary: This study investigated the combined effects of tillage methods and topographic variation on gully erosion in three different geomorphic areas in the black soil region of Northeastern China. The results showed that topography was the dominant control on gully erosion and different tillage methods affected the frequency of gully occurrence. The study highlights the importance of considering both topographic variations and tillage methods to control gully erosion.
LAND DEGRADATION & DEVELOPMENT
(2022)
