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[1]张素红,李森,严平,等.粤北石漠化地区137Cs分布特征与背景值研究[J].水土保持研究,2007,14(06):361-364.
　ZHANG Su-hong,LI Sen,YAN Ping,et al.137Cs Distribution and Its Reference Inventory in Rocky Desertification Land in North Guangdong[J].Research of Soil and Water Conservation,2007,14(06):361-364.

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粤北石漠化地区¹³⁷Cs分布特征与背景值研究

《水土保持研究》[ISSN:1005-3409/CN:61-1272/P] 卷: 14 期数: 2007年06期页码: 361-364 栏目: 出版日期: 1900-01-01

Title:: ¹³⁷Cs Distribution and Its Reference Inventory in Rocky Desertification Land in North Guangdong

作者:: 张素红^1,2, 李森³, 严平^1,2, 魏兴琥³, 高尚玉^1,2; 1. 北京师范大学防沙治沙教育部工程研究中心中国沙漠研究中心, 北京 100875;
2. 北京师范大学资源学院, 北京 100875;
3. 佛山大学资源与环境科学研究所, 广东佛山 528000

Author(s):: ZHANG Su-hong^1,2, LI Sen³, YAN Ping^1,2, WEI Xing-hu³, GAO Shang-yu^1,2; 1. MOE Engineering Center of Desertification and Blown-sand Control at Beijing Normal University, China Center of Desert Research, Beijing 100875, China;
2. College of Resources Science and Technology Research, Beijing Normal University, Beijing 100875, China;
3. The Resource and Environmental Science Research Institute, Foshan University, Foshan, Guangdong 528000, China

关键词:: 石漠化; ¹³⁷Cs分布; 背景值; 粤北

Keywords:: karst rocky desertification; ¹³⁷Cs distribution; ¹³⁷Cs reference inventory; north of Guangdong province

分类号:: S157.1

摘要:: 土壤侵蚀是决定土壤中¹³⁷Cs含量及其再分配的主要因素。粤北岩溶山区¹³⁷Cs背景值为（1 433.60±131.40）Bq/m²，低于北半球的平均值，¹³⁷Cs剖面分布基本符合指数分布形式。石漠化地区土壤¹³⁷Cs活度平均为（6.54±0.57）Bq/kg，土壤中¹³⁷Cs水平随石漠化程度增加有先降低后升高的趋势，表明在重度石漠化阶段，土壤活动已由侵蚀转为沉积。

Abstract:: Soil erosion is the key factor that determined the ¹³⁷Cs content in soil and its redistribution.In karst rocky mountain areas in North Guangdong, the value of ¹³⁷Cs reference inventory is calculated to be (1 433.60±131.40) Bq/m², which is lower than the global average value of Northern Hemisphere.The depth distribution of ¹³⁷Cs approximatively agrees to the exponential type.And the ¹³⁷Cs activity of rocky desertification land ranges from (0.65±0.29) Bq/kg to (17.48±1.03) Bq/kg, and average to be (6.54±0.57) Bq/kg.Along with the intensification of rocky desertification, ¹³⁷Cs activity in soil decreases in earlier stage and increases later.It indicates that the process of soil erosion has gradually changed into the process of soil deposition.

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备注/Memo

收稿日期:2007-1-13。
基金项目:国家自然科学基金项目（30471421）
作者简介:张素红（1971- ），女，新疆哈密人，博士，主要从事土地退化研究。

更新日期/Last Update: 1900-01-01