Study on the benefits of plants to reduce sediment in the loess rolling gullied region of north Shaanxi

Hou Xilu; Cao Qingyu

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Study on the benefits of plants to reduce sediment in the loess rolling gullied region of north Shaanxi

- Study on the benefits of plants to reduce sediment in the loess rolling gullied region of north Shaanxi
- Bulletin of Soiland Water Conservation Vol. 9, Issue 2, Pages: 33-40(1990)
- 作者机构：
  
  中国科学院
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- Published：1990
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Hou Xilu, Cao Qingyu. Study on the benefits of plants to reduce sediment in the loess rolling gullied region of north Shaanxi[J]. Bulletin of Soiland Water Conservation, 1990, 9(2): 33-40.
DOI：

Hou Xilu, Cao Qingyu. Study on the benefits of plants to reduce sediment in the loess rolling gullied region of north Shaanxi[J]. Bulletin of Soiland Water Conservation, 1990, 9(2): 33-40. DOI：

摘要

本文分析了不同的林草植被类型，林草地覆盖度和林地凋落物与蓄水减沙效益的关系。其研究方法是通过植被类型小区和治理沟与对比沟，进行径流泥沙观测;用样方和静水浸泡法测定林地凋落物量和贮水量。结果表明:植被类型不同蓄水减沙效益不同。以成年柠条林、6年～15年生刺槐林、2年～8年生沙打旺草地蓄水减沙效益最显著，其次为1年～6年生刺槐林和1年～5年生苜蓿草地;天然荒坡草地的径流量大于农地，大大减少了土壤流失量。同一树种林地覆盖度越大减沙效益越显著。林地凋落物层对蓄水减沙起重要作用。

Abstract

It analyses the relationship of various types of plant vegetation

the plant cover

withered matter in forest land with the benefits of water reservation and sediment reduction

The research method is to observe runoff and sediment from the typed plots of vegetation

the comparison between harnessed and contrasted gullies

to determine the amounts of withered matter on the forest land and water reserved

The results shows that the bene-fit of sediment reduction and water reservation is different from differ-ent vegetation type

It is observed that the benefits in water reservationand sediment reduction of grown-up Caragana korshinskii

six to fifteen-years-growing Roinia pseudoacacia

two to eight-years-growing Astragalus adsurgens

the secondary is the one to six-years-rowing Robinia pseudoaccia and one to five-years一growing alfalfa，the runoff from wasted natural grassland is more than from farmland

reducing the soil loss amount significantly

To the same tree species

the greater the forest cover

the more significant the benefit of sediment reduction

The layer of the withe red matter on forest land has an important effect on the water reserva-tion and sediment reduction-

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