Journal
SCIENCE OF THE TOTAL ENVIRONMENT
Volume 703, Issue -, Pages -Publisher
ELSEVIER
DOI: 10.1016/j.scitotenv.2019.134946
Keywords
The Loess Plateau; Soil organic carbon; Soil inorganic carbon; Soil moisture; Land uses; Grain for green
Categories
Funding
- National Natural Science Foundation of China [41730108, 41773141, 41573136]
- National Research Program for Key Issues in Air Pollution Control [DQGG0105-02]
- Strategic Priority Research Program of the Chinese Academy of Sciences [XDA23010302]
- Chinese Academy of Sciences Light of West ChinaProgram [XAB2016A01]
- Youth Innovation Promotion Association, Chinese Academy of Sciences [2017452]
- State Key Laboratory of Loess and Quaternary Geology, Institute of Earth Environment, Chinese Academy of Sciences [SKLLQG1724]
- International Partnership Program of Chinese Academy of Sciences [132B61 KYSB20170005]
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Land-use affects soil properties and soil carbon storage. Fully understanding land-use impacts on soil is essential to predicting effects on soils from climate change, and providing a scientific basis for soil management. Here, we measured soil properties, soil organic carbon (SOC), soil inorganic carbon (SIC) and total carbon (TC) from 202 samples from cropland, forestland, and grassland, to a depth of 500 cm on the Chinese Loess Plateau (CLP). We find that grassland and cropland have the highest clay and silt content, and have a significantly higher soil moisture capacity than forestland. Soil moisture in forestland is scarce at depths of 100-300 cm, and does not benefit from rainfall infiltration. At the same time, the soil carbon content and stocks in grassland are not significantly different from forestland. We suggest that in the light of climate change and water shortages on the CLP, grassland is more suitable than forestland or cropland to optimize carbon fixation, and prevent soil erosion. Hence the cultivation of grass should be considered as a strategy for sustainable ecosystem management on the CLP. (C) 2019 Elsevier B.V. All rights reserved.
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