Variation of Sediment Yield in Different Soil Erosion Areas and Its Control Standards on the Loess Plateau

WANG Wan-zhong; JIAO Ju-ying; MA Li-mei; MU Xing-min

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Variation of Sediment Yield in Different Soil Erosion Areas and Its Control Standards on the Loess Plateau

- Variation of Sediment Yield in Different Soil Erosion Areas and Its Control Standards on the Loess Plateau
- Bulletin of Soiland Water Conservation Vol. 31, Issue 5, Pages: 1-7(2012)
- 作者机构：
  
  1. 西北农林科技大学水土保持研究所, 陕西杨凌,712100
  2. 中国科学院水利部水土保持研究所, 陕西杨凌,712100
- 作者简介：
- 基金信息：
- DOI：
  CLC：
- Published：2012
- 稿件说明：
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WANG Wan-zhong, JIAO Ju-ying, MA Li-mei, et al. Variation of Sediment Yield in Different Soil Erosion Areas and Its Control Standards on the Loess Plateau[J]. Bulletin of Soiland Water Conservation, 2012, 31(5): 1-7.
DOI：

WANG Wan-zhong, JIAO Ju-ying, MA Li-mei, et al. Variation of Sediment Yield in Different Soil Erosion Areas and Its Control Standards on the Loess Plateau[J]. Bulletin of Soiland Water Conservation, 2012, 31(5): 1-7. DOI：

摘要

为了确定黄土高原不同侵蚀类型区的治理目标

采取"水文-地貌法"

利用98个水文站控制区和234个侵蚀产沙单元

在分析其不同治理阶段土壤侵蚀产沙变化特征与减沙幅度

不同侵蚀强度面积的变化及其空间分布的基础上

提出了未来20a黄土高原主要流失区的区域治理目标:土壤流失量控制在3.60×10

t左右

土壤侵蚀模数

1300t/(km

.a)左右。其中

黄土峁状丘陵沟壑区为3000t/(km

.a)

黄土梁状丘陵沟壑区为2000t/(km

.a)

干旱黄土丘陵沟壑区为2000t/(km

.a)

黄土平岗丘陵沟壑区为1000t/(km

.a)

风沙黄土丘陵沟壑区为1000t/(km

.a)

黄土山麓丘陵沟壑区为1000t/(km

.a)

森林黄土丘陵沟壑区为300t/(km

.a)

黄土高塬沟壑区为1500t/(km

.a)

黄土残塬沟壑区为3000t/(km

.a)

黄土阶地区为500t/(km

.a)

风沙草原区为500t/(km

.a)

高原土石山区为100t/(km

.a)。未来20a黄土高原的治理重点区域为黄土峁状丘陵沟壑区(2.20×10

)、干旱黄土丘陵沟壑区(1.50×10

)、黄土高塬沟壑区(8600km

)、黄土梁状丘陵沟壑区(4600km

)。

Abstract

Based on the distribution of hydrological stations

the study area was divided into 98sections controlled by hydrological stations and then

234 soil erosion units were determined according to the different soil erosion areas. The variation of sediment yield

sediment reduction rate

and the area variation and spatial distribution were analyzed for different degrees of sediment yield in the different soil erosion areas in different control periods.The control standards for the different soil erosion areas on the Loess Plateau in the future 20years were put forwarded:Soil loss is controlled at 3.6×108t and soil erosion modulus is less than 1300t/(km2·a). For the different soil erosion are-as

soil erosion modulus is 3000t/(km2·a) in loess Mao hilly and gully region

2000t/(km2·a) in loess Liang hilly and gully region

2000t/(km2·a) in arid loess hilly and gully region

1000t/(km2·a)in loess gentle slope hilly and gully region

1000t/(km2·a) in wind and sand loess hilly and gully region

1000t/(km2·a) in lo-ess piedmont hilly and gully region

300t/(km2·a) in forest loess hilly and gully region

1500t/(km2·a) in loess tableland hilly and gully region

3000t/(km2·a) in loess residual plateau hilly and gully region

500t/(km2·a) in loess terraces region

500t/(km2·a) in wind and sand grassland region

and 100t/(km2·a) in plateau mountain and rock region.The key control areas in the future 20years are loess Mao hillyand gully region (2.20×104km2)

arid loess hilly and gully region(1.50×104km2)

loess tableland hilly and gully region(8600km2)

and loess Liang hilly and gully region(4600km2).

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