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1.云南师范大学地理学部,云南省高原地理过程与环境变化重点实验室,昆明 650500
2.云南省;水土保持生态环境监测总站,昆明 650224
3.云南省农业科学院热区生态农业研究所,云南;元谋651300
4.云南省水土流失防治与绿色发展重点实验室,云南 元谋 651300
Received:02 November 2025,
Revised:2026-02-19,
Accepted:18 March 2026,
Online First:14 April 2026,
Published:28 August 2026
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季顺川,顾天蕊,冷鹏,等.干热河谷不同植被修复模式减流减沙效应及其影响因素[J].水土保持学报,2026,40(4):23-34.
Ji Shunchuan, Gu Tianrui, Leng Peng, et al. Effects and influencing factors of runoff and sediment reduction under different vegetation restoration models in dry-hot valleys[J]. Journal of Soil and Water Conservation, 2026, 40(4):23-34.
季顺川,顾天蕊,冷鹏,等.干热河谷不同植被修复模式减流减沙效应及其影响因素[J].水土保持学报,2026,40(4):23-34. DOI: 10.13870/j.cnki.stbcxb.2026.04.011. CSTR: 32310.14.stbcxb.2026.04.011.
Ji Shunchuan, Gu Tianrui, Leng Peng, et al. Effects and influencing factors of runoff and sediment reduction under different vegetation restoration models in dry-hot valleys[J]. Journal of Soil and Water Conservation, 2026, 40(4):23-34. DOI: 10.13870/j.cnki.stbcxb.2026.04.011. CSTR: 32310.14.stbcxb.2026.04.011.
目的
2
探究干热河谷区不同植被修复模式的减流减沙效应并分析其影响机理,为干热河谷水土保持功能型植被修复提供科学依据。
方法
2
以云南省元谋干热河谷为研究区,于2019—2022年开展原位监测试验,以裸地为对照,设置耕作地、灌草地、乔灌草地、自然恢复地1、自然恢复地2等植被修复模式,比较不同植被修复模式的减流减沙效益,探究不同植被修复模式下降雨、土壤、植被因子对土壤流失量及径流量的影响机理。
结果
2
以裸地为对照,耕作地、灌草地、乔灌草地、自然恢复地1、自然恢复地2径流量分别减少64.25%、89.08%、91.81%、87.20%、84.79%,土壤流失量分别降低92.16%、99.45%、99.92%、99.37%、97.26%,减流减沙效果为乔灌草地>灌草地>自然恢复地1>自然恢复地2>耕作地>裸地。降雨侵蚀力为径流量的主要驱动因素,总效应21.90%~70.73%,而土壤流失量的主要驱动因素为径流量,总效应26.94%~97.81%。在裸地及人为干扰强烈的耕作地中,水沙过程主要由降雨因子(降雨侵蚀力)主导;而在灌草、乔灌草等修复模式下,系统则转向以“地表水文过程”为主导,植被与土壤因子通过削减径流规模,从根本上减少径流量和土壤流失的发生。
结论
2
木棉+羊蹄甲+扭黄茅+孔颖草组合的乔灌草模式减流减沙效果最佳,该模式通过土壤与植被因子共同调控抑制径流量和土壤流失量的产生,达到较好的水土保持效益。
Objective
2
This study aims to investigate the effects of different vegetation restoration models on runoff and sediment reduction in dry-hot valleys and to analyze their underlying mechanisms, thereby providing a scientific basis for functional vegetation restoration for soil and water conservation in these areas.
Methods
2
Taking the Yuanmou dry-hot valley in Yunnan Province as the study area, an in-situ monitoring experiment was conducted from 2019 to 2022. Bare land was used as the control, and vegetation restoration models including cultivated land, shrub-grassland, tree-shrub-grassland, naturally restored land 1 and naturally restored land 2 were established. The runoff and sediment reduction benefits under different vegetation restoration models were compared, and the influence mechanisms of rainfall, soil, and vegetation factors on soil loss and runoff under different models were explored.
Results
2
Compared with bare land, runoff decreased by 64.25%, 89.08%, 91.81%, 87.20% and 84.79%, and soil loss decreased by 92.16%, 99.45%, 99.92%, 99.37% and 97.26% in cultivated land, shrub-grassland, tree-shrub-grassland, naturally restored land 1, and naturally restored land 2, respectively. The effectiveness of runoff and sediment reduction followed the order: tree-shrub-grassland > shrub-grassland > naturally restored land 1 > naturally restored land 2 > cultivated land > bare land. Rainfall erosivity was the major driving factor of runoff, with a total effect ranging from 21.90% to 70.73%, while runoff was the primary driving factor of soil loss, with a total effect ranging from 26.94% to 97.81%. In bare land and intensively disturbed cultivated land, the water and sediment processes were mainly dominated by rainfall factors (rainfall erosivity). In contrast, under restoration models such as shrub-grassland and tree-shrub-grassland, the system shifted to being dominated by "surface hydrological processes", where vegetation and soil factors fundamentally reduced the occurrence of runoff and soil loss by curbing runoff volume.
Conclusion
2
The tree-shrub-grass model combining
Bombax ceiba
,
Bauhinia purpurea
,
Heteropogon contortus
, and
Bothriochloa pertusa
was the most effective in reducing runoff and sediment. This model achieves significant soil and water conservation benefits by jointly regulating soil and vegetation factors to suppress the generation of runoff and soil loss.
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