云南典型丘陵区茶园有机管理措施对土壤侵蚀的影响

doi:10.11934/j.issn.1673-4831.2016.05.015

生态与农村环境学报 ›› 2016, Vol. 32 ›› Issue (5): 788-793.doi: 10.11934/j.issn.1673-4831.2016.05.015

云南典型丘陵区茶园有机管理措施对土壤侵蚀的影响

刘世梁¹, 董玉红², 尹艺洁¹, 成方妍¹, 董世魁¹

1. 北京师范大学环境学院水环境模拟国家重点实验室, 北京 100875;
2. 中国林业科学研究院林业研究所, 北京 100091

收稿日期:2016-01-12 出版日期:2016-09-25 发布日期:2016-10-08
通讯作者: 刘世梁,E-mail:shiliangliu@bnu.edu.cn E-mail:shiliangliu@bnu.edu.cn
作者简介:刘世梁(1976-),男,山东沂水人,教授,博士,主要从事景观生态学和土壤学方面的研究。E-mail:shiliangliu@bnu.edu.cn
基金资助:
国家自然科学基金面上项目（41571173）；国家科技支撑计划（2014BAK19B06）

Effects of Organic Management Measures for Tea Plantations on Control of Soil Erosion in a Typical Hilly Region in Yunnan Province

LIU Shi-liang¹, DONG Yu-hong², YIN Yi-jie¹, CHENG Fang-yan¹, DONG Shi-kui¹

1. State Key Laboratory of Water Environment Simulation, School of Environment, Beijing Normal University, Beijing 100875, China;
2. Research Institute of Forestry, Chinese Academy of Forestry, Beijing 100091, China

Received:2016-01-12 Online:2016-09-25 Published:2016-10-08

摘要/Abstract

摘要：

针对云南省典型丘陵区有机茶园管理措施，利用坡面土壤侵蚀机理模型--水蚀预报模型（WEPP），模拟了提高植被覆盖率与秸秆覆盖量对坡面土壤侵蚀的影响。结果表明，无论是常规茶园还是有机茶园，降雨强度显著影响坡面土壤流失量和泥沙输出量；但坡长不是主要影响因子。秸秆覆盖使得土壤表层养分含量明显增加，同时也明显降低土壤侵蚀量，特别是在大暴雨和特大暴雨情况下，下降程度更明显；当秸秆覆盖量提高至1.0 kg·m^-2时，土壤侵蚀量明显降低。模拟结果表明，随着有机茶园植被覆盖率的增加，土壤侵蚀量有所降低。对不同植被覆盖率和秸秆覆盖量组合效应的模拟结果表明，不同管理措施的综合作用对土壤流失量和泥沙输出量有明显减缓作用，特别当有机茶园覆盖率低的情况下，秸秆覆盖对土壤侵蚀的减缓作用更明显。

关键词: 土壤侵蚀, 有机茶园, 秸秆覆盖, 植被覆盖率, WEPP模型

Abstract:

A study was carried out in a typical hilly region in Yunnan Province in order to investigate effects of organic farming measures for management of tea plantations on soil erosion. A water erosion prediction project(WEPP) model specific for mechanism of soil erosion on slopes was used to simulate effects of higher vegetation coverage and/or higher straw mulching rate on soil erosion on slopes. Results show that rainfall intensity is the major factor, rather than slope length, significantly affecting soil loss and sediment output in either conventional or organic tea plantation on slope. Straw mulching significantly increases soil nutrient contents in the surface soil layer, and at the same time reduces soil erosion rate remarkably, and the soil conservation effect is more obvious, especially in the cases of heavy rain shower and rainstorm. Soil erosion rate drops significantly when straw mulching rate reaches 1.0 kg·m^-2. The simulation shows that soil erosion rate reduces with increasing vegetation coverage. The simulation of combined effect of vegetation coverage and straw mulching indicates that the combination of different management measures can significantly reduce soil erosion and sediment yield, especially in tea plantations with low vegetation coverage, where the effect of straw mulching is more obvious.

Key words: soil erosion, organic tea garden, straw mulching, vegetation coverage, WEPP model

中图分类号:

S157

刘世梁, 董玉红, 尹艺洁, 成方妍, 董世魁. 云南典型丘陵区茶园有机管理措施对土壤侵蚀的影响[J]. 生态与农村环境学报, 2016, 32(5): 788-793.

LIU Shi-liang, DONG Yu-hong, YIN Yi-jie, CHENG Fang-yan, DONG Shi-kui. Effects of Organic Management Measures for Tea Plantations on Control of Soil Erosion in a Typical Hilly Region in Yunnan Province[J]. Journal of Ecology and Rural Environment, 2016, 32(5): 788-793.

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云南典型丘陵区茶园有机管理措施对土壤侵蚀的影响

Effects of Organic Management Measures for Tea Plantations on Control of Soil Erosion in a Typical Hilly Region in Yunnan Province

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