干旱区生态环境知识资源中心(Arid): 绿洲化过程中塔里木地区农田土壤固碳速率与驱动因素分析

Arid

	绿洲化过程中塔里木地区农田土壤固碳速率与驱动因素分析
其他题名	Cropland Soil Organic Carbon Sequestration Rate and Its Affecting Factors in the Oasisization Process of the Irrigating Area in the North Tarim Basin
	鲁晶晶 1; 周智彬 1; 闫冰 1; 丁新原 1; 贾宏涛 2; 王新军 2
来源期刊	干旱区研究
ISSN	1001-4675
出版年	2016
卷号	33 期号:6 页码:1325-1335
中文摘要	通过对不同时期塔里木北部灌区农田样地土壤采样及剖面分析,结合第二次全国土壤普查和塔里木北部灌区相关农业资料,利用Arc GIS软件分析农田土壤有机碳储量和碳密度变化,揭示绿洲化过程中塔里木北部灌区农田土壤有机碳库的演变规律,分析影响土壤有机碳固存的主要因素。结果表明: ①灌区不同类型土壤的固碳能力差异显著,有机碳含量从高至低依次为草甸土、盐土、潮土和风沙土;剖面土壤有机碳含量自上而下递减,其中表层土壤有机碳含量高达2 ~ 8 g·kg~(-1)。②剖面0 ~ 20 cm和20 ~ 40 cm深度的平均土壤有机碳密度分别为(1.36 0.09) kg·m~(-2)和(1.10 0.07) kg·m~(-2), 其中风沙土的土壤有机碳密度远低于该区平均水平。③与1981年相比, 2011年塔里木北部灌区土壤有机碳密度增量不明显,固碳速率为- 0.01 ~ 0.03 kg·m~(-2)·a~(-1);不同类型土壤的有机碳密度变化差异显著。总体而言,在绿洲化过程中,新疆塔里木北部灌区的土壤有机碳含量呈增加趋势,土地开发年限及农田管理措施是影响该变化的主要因素。
英文摘要	Based on analyzing the typical sampling sites in the irrigated area in the north Tarim Basin in different periods and the data from the Second National Soil Survey and agricultural information of this area,the storage and density fluctuation of soil organic carbon content was analyzed by Arc GIS so as to reveal the evolvement of cropland soil organic pools and analyze the relevant affecting factors of soil carbon sequestration in the oasisization process of the irrigated area in the north Tarim Basin. The study was aimed at providing the scientific guidance to improve the soil quality,increase the crop yield in the irrigated area,provide the theoretical support for carbon estimation in Xinjiang and even in north China,and serve for national climate negotiations. The results are as follows: ① The capacities of carbon sequestration for different soil types in cropland were quite different,and the organic carbon content was in an order of meadow soil > solonchak > fluvo-aquic soil > Aeolian sandy soil. On the scale of soil profile, the organic carbon content was decreased from epipedon to bottom,and that of epipedon was up to 2 - 8 g· kg~(-1); ② The average organic carbon densities at depths of 0 - 20 cm and 20 - 40 cm were (1.36 0.09) kg· m~(-2) and (1.10 0.07) kg·m~(-2) respectively,and the organic carbon density for Aeolian sandy soil was much lower than the average; ③ Compared with the 1981s,the change of soil organic carbon density in the study area in 2011 was not significant,and the carbon sequestration rate was in the range of - 0.01 - 0.03 kg·m~(-2)·a~(-1). However,there was a remarkable difference of organic carbon density among different soil types. Holistically,the soil organic carbon content in cropland in the region was increased in the oasisization process,and the main factors affecting the change of soil carbon content were the agricultural practices and reclamation duration.
中文关键词	绿洲化 ; 固碳速率 ; 农田土壤 ; 有机碳 ; 驱动因素 ; 塔里木北部 ; 新疆
英文关键词	oasisization carbon sequestration rate cropland soil organic carbon affecting factor north Tarim Basin Xinjiang
语种	中文
国家	中国
收录类别	CSCD
WOS类目	AGRICULTURE MULTIDISCIPLINARY
WOS研究方向	Agriculture
CSCD记录号	CSCD:5859962
来源机构	中国科学院新疆生态与地理研究所 ; 新疆农业大学
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/234341
作者单位	1.中国科学院新疆生态与地理研究所, 荒漠与绿洲生态国家重点实验室, 乌鲁木齐, 新疆 830011, 中国; 2.新疆农业大学草业与环境科学学院, 乌鲁木齐, 新疆 830052, 中国
推荐引用方式 GB/T 7714	鲁晶晶,周智彬,闫冰,等. 绿洲化过程中塔里木地区农田土壤固碳速率与驱动因素分析[J]. 中国科学院新疆生态与地理研究所, 新疆农业大学,2016,33(6):1325-1335.
APA	鲁晶晶,周智彬,闫冰,丁新原,贾宏涛,&王新军.(2016).绿洲化过程中塔里木地区农田土壤固碳速率与驱动因素分析.干旱区研究,33(6),1325-1335.
MLA	鲁晶晶,et al."绿洲化过程中塔里木地区农田土壤固碳速率与驱动因素分析".干旱区研究 33.6(2016):1325-1335.