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应用Le Bissonnais法研究黄土丘陵区不同植被区及 坡向对土壤团聚体稳定性和可蚀性的影响
李娅芸1; 刘 雷1; 安韶山1,2; 曾全超1,3; 李 鑫1
Source Publication自 然 资 源 学 报

论文通过Le Bissonnais法对黄土丘陵区森林、森林草原和草原三种植被区下的土壤团
土壤(0~20 cm)中,土壤的水稳性团聚体含量(R0.2)和平均重量直径(MWD)整体上表现为阳

Other Abstract

 In this article, the distribution characteristics, stability and erodibility of soil
aggregate in three zones of forest, forest-steppe and steppe on the Loess Plateau are studied
with the Le Bissonnais (LB) method. The effect of vegetation and slope aspect on the
characteristics and erodibility of soil aggregate is also discussed. The results show that: 1) for
the surface soil (0-20 cm) in different vegetation zones, both the content of soil aggregate
(R0.2) and the mean weight diameter (MWD) are less on sunny slopes than on shady slopes,
while the soil erodibility factor K is a little bigger on sunny slopes than on shady slopes with no
significance. This implies that both the stability and erodibility of soil aggregate are slightly
higher on the shady slope than on the sunny slope in the three vegetation zones in hilly loess
region, but the differences are not significant. 2) In the surface layer (0-20 cm) under different
vegetation, R0.2 and MWD decrease as follows: forest > forest steppe > steppe, while soil
erodibility factor K decreases in the following order: steppe> forest- steppe > forest. This
suggests that the stability and anti-erosion ability of soil aggregate in the forest vegetation zone
is the highest. 3) Under processes of WS (wet-stirring sieving method) and FW (fast-wetting
sieving method), there are significant difference between samples in forest zone and in steppe
zone in both the soil stability and the soil erodibility (R0.2, MWD, K value), especially under
the process of FW. The stability and erodibility of soil in forest-steppe zone are in between. A
conclusion can be drawn that in the hilly loess zone, the stability and the anti-erosion ability of
soil aggregate is ever increasing from north to south. The stability and the anti-erosion ability
of soil aggregate is significantly higher in the southern forest zone than in the northern steppe

Keyword坡向 植被区 Le Bissonnais 法 水稳性团聚体 土壤可蚀性 黄土丘陵区
Indexed By中文核心期刊要目总览
Document Type期刊论文
Affiliation1.西北农林科技大学资源与环境学院,陕西 杨凌 712100
2.中国科学院、教育部水土保持 与生态环境研究中心黄土高原土壤侵蚀与旱地农业国家重点实验室,陕西 杨凌 712100
3.中国科学院大学,北京 100049
Recommended Citation
GB/T 7714
李娅芸,刘 雷,安韶山,等. 应用Le Bissonnais法研究黄土丘陵区不同植被区及 坡向对土壤团聚体稳定性和可蚀性的影响[J]. 自 然 资 源 学 报,2016,31(2):287-298.
APA 李娅芸,刘 雷,安韶山,曾全超,&李 鑫.(2016).应用Le Bissonnais法研究黄土丘陵区不同植被区及 坡向对土壤团聚体稳定性和可蚀性的影响.自 然 资 源 学 报,31(2),287-298.
MLA 李娅芸,et al."应用Le Bissonnais法研究黄土丘陵区不同植被区及 坡向对土壤团聚体稳定性和可蚀性的影响".自 然 资 源 学 报 31.2(2016):287-298.
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