岩溶山区土地利用方式对土壤活性有机碳及其分布的影响

蓝家程; 傅瓦利; 袁 波; 彭景涛; 张 婷; 付 允

岩溶山区土地利用方式对土壤活性有机碳及其分布的影响

西南大学地理科学学院

基金项目: 重庆市移民局课题(200909)、重庆市自然科学基金(40701179)

计量
- 文章访问数: 4014
- HTML浏览量: 45
- PDF下载量: 3199
- 被引次数: 0
出版历程
- 收稿日期: 2011-01-17
- 刊出日期: 2011-06-25

Impact of land use type on soil active organic carbon and its distribution in karst mountain

School of Geography Science, Southwest University

摘要

摘要: 对重庆中梁山不同土地利用方式下的0～50cm土壤活性有机碳含量和分布进行研究。结果表明:不同利用方式土壤有机碳(SOC)含量大小顺序为:竹林＞菜地＞草地＞林地＞园地＞弃耕地,且均表现为0～20cm层大于20～50cm层;土壤溶解性有机碳(DOC)含量平均值大小顺序为:林地＞竹林＞弃耕地＞草地＞园地＞菜地,土壤溶解性有机碳占土壤有机碳的比例随土层深度增加而增加;土壤易氧化有机碳(EOC)含量及其剖面分布与土壤有机碳含量变化相一致,相关分析表明,两者的相关性达到极显著水平(R=0.852,P＜0.0001),对土壤有机碳变化反应敏感。
- 岩溶区 /
- 土地利用方式 /
- 土壤有机碳 /
- 土壤活性有机碳 /
- 土壤溶解性有机碳 /
- 土壤易氧化有机碳
Abstract: Soil active organic carbon and its distribution in the soils (0～50cm) under different land use type are studied in Zhong Liang knoll, Chongqing. The results reveal that: 1)the contents of the soil organic carbon (SOC) under different land use types are bamboo land ＞vegetable land ＞grassland＞woodland ＞garden ＞abandoned farmland, and the contents of SOC in the layer between 20 to 50cm deep is more than that between 0 to 20cm; 2) the average contents of soil dissolved organic carbon(DOC) are woodland >bamboo land >abandoned farmland ＞grassland ＞garden ＞vegetable land; 3) the percentage of soil dissolved organic carbon to the total soil organic carbon increased with depth; 4) the easily oxidized organic carbon(EOC) content and its distribution on the profile is consistent with the changes of soil organic carbon content. Correlation analysis shows that the correlation between easily oxidized organic carbon and soil organic carbon gets very significant level (R=0.852,P＜0.0001), proving that the EOC is susceptible to the change of SOC.
- karst area /
- land use type /
- soil organic carbon /
- soil active organic carbon /
- soil dissolved organic carbon /
- soil easily oxidized organic carbon

HTML

参考文献(16)

[1]	沈宏,曹志洪,胡正义.土壤活性有机碳的表征及其生态效应［J］.生态学杂志,1999,18(3):32-38.
[2]	Coleman D C, Reid C P P, Cole C V. Biological strategies of nutrient cycling in soil systems［J］.Advances in Ecological Research,1983,13:1-55.
[3]	Wander M M, Traina S J, Stinner B R, et al. Organic and conventional management effects on biologically active soil organic matter pools ［J］. Soil Science Society of America Journal, 1994, 58: 1130-1139.
[4]	Post W M, Kwon K C. Soil carbon sequestration and land use change: processes and potential ［J］. Global Change Biology,2000,6:317-327.
[5]	Chantigny M H. Dissolved and water-extractable organic matter in soils: a review on the influence of land use and management practices ［J］. Geoderma, 2003, 113: 357 -380.
[6]	曹建华,潘根兴,袁道先,等.岩溶地区土壤溶解有机碳的季节动态及环境效应［J］.生态环境,2005,14(2):224-229.
[7]	莫彬,曹建华,徐祥明,等.岩溶山区不同土地利用方式对土壤活性有机碳动态的影响［J］.生态环境,2006,15(6):1224-1230.
[8]	庞冬辉,李先琨,何成新,等.桂西峰丛岩溶区的环境特点及农业生态系统优化设计［J］.广西植物,2003,25(5):24-29.
[9]	覃家科,李先混,姜光辉,等.木美地下河流域主要植被类型物种多样性与恢复对策［J］.广西植物,2005,25(6):19-24.
[10]	段正锋,傅瓦利,甄晓君,等.岩溶区土地利用方式对土壤有机碳组分及其分布特征的影响［J］.水土保持学报,2009,23(2):109-114.
[11]	Houghton R A. Woodwell G M. Global elimate change ［J］. American Journul of Science, 1989, 260: 18-26.
[12]	袁道先.碳循环与全球岩溶［J］.第四纪研究,1993,(1):1-6.
[13]	Yuan DaoXian. The carbon cycle in karst ［J］.Annual of Geomorphology, 1997, 108: 91-102.
[14]	鲁如坤.土壤农业化学析［M］.北京:中国农业科技出版社,2000.
[15]	Blair G J, Lefroy R D B, Lisle L. Soil carbon fractions based on their degree of oxidation and the development of a carbon management index for agricultural system［J］.Australian Journal Agriculture Research,1995,46:1456-1466.
[16]	任天志,StefanoG.持续农业中的土壤生物指标［J］.中国农业科学,2000,33(1):68-75.

施引文献

资源附件(0)

访问统计

点击查看大图

计量

文章访问数: 4014
HTML浏览量: 45
PDF下载量: 3199
被引次数: 0

姓名
邮箱
手机号码
标题
留言内容
验证码

留言板

岩溶山区土地利用方式对土壤活性有机碳及其分布的影响

计量

Impact of land use type on soil active organic carbon and its distribution in karst mountain

计量

目录

留言板

岩溶山区土地利用方式对土壤活性有机碳及其分布的影响

计量

出版历程

Impact of land use type on soil active organic carbon and its distribution in karst mountain

计量

出版历程

目录