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| 土地利用/覆盖变化对地表蚀积过程的影响——来自137Cs示踪的证据 | |
| 引用本文： | 潘星慧,张春来,王升堂,杨硕,常春平,邱玉珺.土地利用/覆盖变化对地表蚀积过程的影响——来自137Cs示踪的证据[J].中国沙漠,2007,27(6):994-999. |
| 作者姓名： | 潘星慧 张春来 王升堂 杨硕 常春平 邱玉珺 |
| 作者单位： | 1. 北京师范大学防沙治沙教育部工程研究中心/北京师范大学中国沙漠研究中心,北京,100875 2. 皖西学院城市建设与环境系,安徽,六安,237012 3. 河北师范大学资源与环境科学学院,河北,石家庄,050016 4. 南京信息工程大学遥感学院,江苏,南京,210044 |
| 摘 要： | 土地利用/覆盖变化不仅影响地表137Cs总量的再分配，而且显著影响土壤137Cs剖面分布。坝上地区各类土地利用/覆盖条件下137Cs总量的再分配，显示该区总体处于风蚀环境，其中农田和撂荒地是风蚀最严重的土地利用类型；137Cs剖面分布则指示了土地利用/覆盖变化过程中的土壤风蚀/堆积过程的转换，蚀积过程的转换证实了风蚀重灾区退耕还林还草，特别是退耕还草，对控制土壤风蚀、改善生态环境的重要意义。分析还认为，利用137Cs示踪方法计算土壤风蚀/堆积速率时，应格外注意样地的土地利用/覆盖变化过程。 |
| 关 键 词： | 土地利用/覆盖变化 137Cs总量 137Cs剖面分布 地表蚀积过程 |
| 文章编号： | 1000-694X（2007）06-0994-06 |
| 收稿时间： | 2007-04-11 |
| 修稿时间： | 2007-06-20 |
Influence of Land Use/Cover Change on Soil Surface Erosion/Deposition Process: Evidence from 137Cs as A Tracer |
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| PAN Xing-hui,ZHANG Chun-lai,WANG Sheng-tang,YANG Shuo,CHANG Chun-ping,QIU Yu-jun.Influence of Land Use/Cover Change on Soil Surface Erosion/Deposition Process: Evidence from 137Cs as A Tracer[J].Journal of Desert Research,2007,27(6):994-999. | |
| Authors: | PAN Xing-hui ZHANG Chun-lai WANG Sheng-tang YANG Shuo CHANG Chun-ping QIU Yu-jun |
| Abstract: | Land use/cover changes affect both redistribution of 137Cs inventory and 137Cs depth distribution in soil profile.Redistribution of 137Cs inventory of several main types of land use/cover in Bashang region of Hebei province indicated that the region was in a wind erosion environment,where current agricultural land and deserted arable land are land use types suffering from the most serious wind erosion.137Cs depth distribution denoted the conversion of soil erosion/deposition by wind in the process of land use/cover change,which proved the significance of vegetation restoration by afforesting or planting grass on the current agricultural land in stead of further cultivation for wind erosion control and eco-environmental improvement.The results suggested that the process of land use/cover change should be fully considered in estimating soil erosion/deposition rates using 137Cs as a tracer. |
| Keywords: | land use/cover change 137Cs inventory 137Cs depth distribution process of soil erosion/deposition |
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