Spatial variation of soil properties and carbon under different land use types on the Chinese Loess Plateau
Spatial variation of soil properties and carbon under different land use types on the Chinese Loess Plateau
复制标题
黄土高原不同土地利用类型下土壤性质和碳的空间变异
DOI：
10.1016/j.scitotenv.2019.134946
复制
发表时间：
2020
影响因子：
9.8
通讯作者：
Ling Yang
中科院分区：
文献类型：
--
作者：
Xia Yu;Weijian Zhou;Yiping Chen;Yunqiang Wang;Peng Cheng;Yaoyao Hou;Ya Wang;Xiaohu Xiong;Ling Yang
土地利用影响土壤性质和土壤碳储存。充分了解土地利用对土壤的影响对于预测气候变化对土壤的影响至关重要，并为土壤管理提供科学依据。在这里，我们测量了中国黄土高原（CLP）农田、林地和草地 500 厘米深度的 202 个样品的土壤性质、土壤有机碳（SOC）、土壤无机碳（SIC）和总碳（TC）。我们发现草地和农田的粘土和淤泥含量最高，并且土壤持水能力显着高于林地。林地100-300厘米深度的土壤水分稀缺，不利于降雨入渗。同时，草地土壤碳含量和储量与林地没有显着差异。我们建议，考虑到中电的气候变化和水资源短缺，草地比林地或农田更适合优化碳固定，防止水土流失。因此，牧草种植应被视为中电合作可持续生态系统管理的一项战略。
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.