Characteristics and Driving Factors of Sandy Desertification in the Sandy Hill Area of Poyang Lake

DING Ming-jun; ZHENG Lin; NIE Yong

您当前的位置：

首页 >

文章列表页 >

Characteristics and Driving Factors of Sandy Desertification in the Sandy Hill Area of Poyang Lake

- Characteristics and Driving Factors of Sandy Desertification in the Sandy Hill Area of Poyang Lake
- Bulletin of Soiland Water Conservation Vol. 29, Issue 2, Pages: 159-163(2010)
- 作者机构：
  
  1. 鄱阳湖湿地与流域研究教育部重点实验室, 江西师范大学,江西,南昌,330028
  2. 中国科学院地理科学与资源研究所,北京,100101
- 作者简介：
- 基金信息：
- DOI：
  CLC：
- Published：2010
- 稿件说明：
移动端阅览
DING Ming-jun, ZHENG Lin, NIE Yong. Characteristics and Driving Factors of Sandy Desertification in the Sandy Hill Area of Poyang Lake[J]. Bulletin of Soiland Water Conservation, 2010, 29(2): 159-163.
DOI：

DING Ming-jun, ZHENG Lin, NIE Yong. Characteristics and Driving Factors of Sandy Desertification in the Sandy Hill Area of Poyang Lake[J]. Bulletin of Soiland Water Conservation, 2010, 29(2): 159-163. DOI：

摘要

鄱阳湖沙山地区土地沙化属于南方荒漠化的一种典型类型，是在湖滨沙质阶地的基础上形成的，它既有别于北方的土地沙漠化，又区别于南方其它类型的荒漠化。基于野外调查的基础上对该地区土地沙化特征进行描述，同时从历史背景、当代气候特征以及鄱阳湖水位变化等几个方面对沙化的成因进行了分析。分析结果表明:(1)目前该地区土地沙化趋于变好态势;(2)历史上的海平面变化及气候特征成为鄱阳湖沙山形成的主要因素，而沙山又为该地区当代土地沙化提供了丰富的物质来源。(3)当代气候特征下，流水及固定风向的长期侵蚀为土地沙化提供了动力因素，而鄱阳湖水位的周期性变化，为土地沙化的物质循环提供了有利的环境。总的来说，鄱阳湖沙山地区的土地沙化是在历史地质地貌变迁、当代气候条件、湖泊变化以及人为活动等因素的共同作用下形成的独具特色的亚热带土地荒漠化。

Abstract

Soil erodibility is the intrinsic factor which has effect on water erosion on slope and is related to soil texture

soil organic matter

and other soil properties. Sediment particle is analyzed by using plot data from rainfall simulation experiments.Results show that ( 1)during rainfall

particle composition of sediment changes with time . Sand content increases

silt content keeps constant

and clay content decreases. ( 2) Rainfall intensity is the important factor to the particle composition of sediment . With rain intensity increasing

sand content increases and slit and clay contents are reduced. ( 3)The effect of slope gradient on sedi- ment is complicated . When slope becomes steeper

sand content increases first and then decreases

whereas silt and clay contents decrease first and then increase . When slope gradient is 20 °

sand content reaches the maximum and slit and clay contents

the minimum.

关键词

Keywords

references

Views

1547

下载量

CSCD

Alert me when the article has been cited

提交

Tools

Publicity Resources

Impaction of Climate Change and Human Activities to Land Desertification in Jieba Mountain Over Last 50 Years

050811 Large-scale Debris Flow in Hailuo Valley and Prevement Countermeasures

Status and Prevention Measures of Land Desertification of Chaidamu Basin in Qinghai Province

Causes of Geologic Hazards and Control in Shangzhou Region of Shaanxi Province

Application of Multi-Surface Flow Constructed Wetland to Rural Non-point Source Pollution Control in Poyang Lake Region

Related Author

ZHAO Ting-ning

JIN Cheng-zhu

ZOU Shou-yi

GUO Hong-zhong

TIAN Jia

QI Yunlong

CHEN Binru

CUI Peng

Related Institution

Inner Mongolia Agricultural University, Huhehot, Inner Mongalia

Chongqing General Station of Soil and Water Conservation Monitoring

College of Soil and Water Conservation, Beijing Forestry University

Chengdu Institute of Mountain Hazards and Environment, CAS

College of Life Science, Northwest University, Xian

⁰