CHEN Hai-bin,CHEN Zhi-biao.Assessment of Soil Fertility under Soil and Water Conservation Measures in Red Eroded Soil Watershed-A Case Study in the Small Watershed of Zhuxi[J].Research of Soil and Water Conservation,2011,18(05):81-86.
侵蚀红壤小流域水土保持措施的土壤肥力效应评价——以朱溪小流域为例
- Title:
- Assessment of Soil Fertility under Soil and Water Conservation Measures in Red Eroded Soil Watershed-A Case Study in the Small Watershed of Zhuxi
- Keywords:
- eroded red soil areas; soil and water conservation measures; soil fertility; fuzzy mathematics
- 分类号:
- S157
- 摘要:
- 针对朱溪小流域在水土流失治理过程中设置的不同水土保持治理措施，采用模糊数学的隶属函数对土壤肥力的恢复效应进行定量分析，为小流域的后续管理和水土保持措施的推广提供依据。结果表明：不同治理措施的土壤肥力以封禁最好，生态林草次之，低效林改造效果较差；生态林草模式中以全坡面播草和乔灌草混交较好，水平条沟较差。八十里河样地治理后经过20多年时间FI值达到0.53，2000年设置的样地FI值，只有封禁和全坡面播草措施达到0.4，2006年设置的样地FI值都低于0.3，说明经过10 a的治理，土壤肥力指数刚刚达到中等水平，而20多年后土壤肥力指数才处于中等偏好的水平，土壤肥力的恢复是一个相当漫长的过程。
- Abstract:
- According to the soil and water conservation measures set for soil and water loss control in the small watershed of Zhuxi, the fuzzy mathematics was used to evaluate the soil fertility recovery effect, provide reference to the subsequent management of the watershed and the promotion of soil and water conservation measures. The results showed that the effect of soil fertility under different control modes, the close hillsides to facilitate afforestation was the best, the ecological forest and grass took second place, the remoulded inefficient forest was poorer. The ecological building mode of sowing grass in the slope and mixed plantation of trees brushes and grasses were better, the level ditch planting was poorer. The FI value of the plot with Bashilihe was 0.53 after control for more than 20 years, the FI value of the plot set in 2000 only the close hillsides to facilitate afforestation and the sowing grass in the slope reached 0.4, the FI value of the plot set in 2006 was less than 0.3. The soil FI value was just in medium preference level after control more than 20 years, and just reached the medium level after control about 10 years, it explains that the soil fertility restoration was a slowly process.
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备注/Memo
收稿日期:2011-4-15;修回日期:2011-5-11
基金项目:国家自然科学基金（40871141，40571096）
作者简介:陈海滨（1986- ），男，福建南安人，在读硕士，主要从事水土保持与GIS应用研究。E-mail：chenhb13@163.com
通讯作者:陈志彪（1962- ）,男,教授,主要从事资源与环境等方面研究。E-mail：chenzhib@gmail.com