Dynamics and Causes of Soil and Water Loss in Black Soil Region of Heilongjiang Province

WANG Ping; SUN Tao

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Dynamics and Causes of Soil and Water Loss in Black Soil Region of Heilongjiang Province

- Dynamics and Causes of Soil and Water Loss in Black Soil Region of Heilongjiang Province
- Bulletin of Soiland Water Conservation Vol. 32, Issue 4, Pages: 8-11(2013)
- 作者机构：
  
  1. 黑龙江省水土保持科学研究所,黑龙江,哈尔滨,150000
  2. 中国科学院东北地理与农业生态研究所黑土区农业生态院重点实验室,黑龙江,哈尔滨,150081
- 作者简介：
- 基金信息：
- DOI：
  CLC：
- Published：2013
- 稿件说明：
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WANG Ping, SUN Tao. Dynamics and Causes of Soil and Water Loss in Black Soil Region of Heilongjiang Province[J]. Bulletin of Soiland Water Conservation, 2013, 32(4): 8-11.
DOI：

WANG Ping, SUN Tao. Dynamics and Causes of Soil and Water Loss in Black Soil Region of Heilongjiang Province[J]. Bulletin of Soiland Water Conservation, 2013, 32(4): 8-11. DOI：

摘要

为了解不同时期黑龙江省黑土区水土流失状况及其演变动态

根据历史调查资料、小流域原位勘察结果及同期遥感调查数据

分别对1950

1980和2000年黑龙江省黑土区50a来不同空间尺度水土流失状况、特征、成因及演变进行分析。结果表明:(1)该区水土流失面积50a来净增了2.08×10

水蚀是造成该区水土流失主要形式。(2)1950-1980年20a间年均水土流失面积为411.9km

比1980-2000年年均值高出25.5km

。(3)50a来该区侵蚀沟数量增加98 832条

2000年侵蚀沟面积所占比例比1950年增加了172.4%

沟壑密度增加2.83倍。该区水土流失呈持续恶化态势

不合理人类活动、政策导向和黑土质量退化是导致该区水土流失程度动态变异主要诱因。

Abstract

In order to understand soil and water loss and its dynamic changes in the black soil region

the dynamic characteristics and causes of soil and water loss during aperiod of 50years(1950

1980and 2000)were analyzed in Heilongjiang Province

by investigating the historical information

small watershed survey

and remote sensing data analysis.The results indicated that:(1)The area of soil and water loss increased by 2.08×104 km2 in the past 50years

and water erosion contributed the most for the erosion.(2)During the period from 1950to 1980

the area of soil and water loss was 411.9km2

while it was 386.4km2 during the period from 1980to 2000.(3)The number of erosion gully increased 98 832during the past 50years

the area of erosion gully increased by 172.4%

and the density of gully increased by 2.83times.The deterioration of soil and water loess was attributed to the uncontrolled anthropic activities

policy direction by local government and deterioration of black soil physical properties in this region.

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