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首页> 外文期刊>Mitigation and Adaptation Strategies for Global Change >Carbon sequestration of paddy fields in Western Jilin of China during 1989–2004
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Carbon sequestration of paddy fields in Western Jilin of China during 1989–2004

机译：1989-2004年中国吉林西部稻田固碳

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摘要

The study area of this article, Western Jilin province of China, was a typical area responding to global changing in middle latitude areas. In this paper, by interpreting the thematic mapper (TM) images of the study area in the years of 1989, 1996, 2000 and 2004, the land use/cover change (LUCC) data were achieved, which included the area of paddy fields and its spatial distributions. 113 soil samples were collected to obtain soil organic carbon (SOC) data of different land use types. After that, the organic matter contents of these samples were measured by using the potassium dichromate oxidation-outer heating method. Based on the data above, the amount of SOC sequestrated by the surface soil (0~30 cm) of paddy fields was calculated. The result showed that: the area of paddy fields was increasing continuously in western Jilin, from 11.28 × 104 hm2 in 1989 to 22.77 × 104 hm2 in 2004. Paddy fields transferred from wetlands, grasslands and water areas accounted for the main part of the paddy fields in 2004, the areas were 3.09 × 104 hm2, 2.98 × 104 hm2 and 2.8 × 104 hm2, respectively. And paddy fields with a total area of 0.83 × 104 hm2 degraded into saline-alkali lands. The amount of organic carbon sequestration in the surface layer (0–30 cm) of paddy fields was 658.86 × 104 t. The primary SOC sinks located around the joint of Baicheng City and Zhenlai County, while the major SOC source located at Songyuan City and northern Qianguo County.
机译：本文的研究区域是中国吉林省西部，是响应全球中纬度地区变化的典型区域。本文通过解释研究区在1989年，1996年，2000年和2004年的专题成像仪（TM）图像，获得了土地利用/覆盖变化（LUCC）数据，其中包括稻田面积和它的空间分布。收集了113个土壤样本，以获取不同土地利用类型的土壤有机碳（SOC）数据。之后，使用重铬酸钾氧化-外部加热法测定这些样品中的有机物含量。根据以上数据，计算出稻田表层土壤（0〜30 cm）的固溶SOC量。结果表明：吉林西部稻田面积不断增加，从1989年的11.28×104 hm2 到2004年的22.77×104 hm2 。 2004年从湿地，草地和水域转移的水田占主要部分，面积分别为3.09×104 hm2 ，2.98×104 hm2 和2.8 ×104 hm2 。总面积为0.83×104 hm2 的水田退化为盐碱地。稻田表层（0-30 cm）的有机碳固存量为658.86×104 t。主要的SOC汇源位于白城市和镇lai县的交界处，而主要的SOC汇源位于松原市和前郭县北部。

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