| 小流域坡耕地治理措施及生态效益研究 |
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| 引用本文： | 谌芸,何丙辉,罗雷. 小流域坡耕地治理措施及生态效益研究[J]. 水土保持通报, 2010, 30(2): 41-45 |
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| 作者姓名： | 谌芸 何丙辉 罗雷 |
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| 作者单位： | 1. 西南大学,资源环境学院,三峡库区生态环境教育部重点实验室,重庆,400715;中国科学院水利部水土保持研究所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
2. 中煤国际工程集团重庆设计研究院,重庆,400016 |
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| 基金项目： | 国家自然基金，重庆市自然基金重点项目，国家科技支撑计划重点项目，黄土高原侵蚀与旱地农业国家重点实验室基金，西南大学生生态学重点学科"211工程"建设项目 |
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| 摘 要： | 三峡库区铁炉沟小流域的坡耕地治理采用了坡改梯、经果林、水保林等措施.为了找出生态效益最佳的措施,在小流域内设置了19个简易径流小区,以顺坡耕作(玉米)为对照,对经果林(柑橘)、经果林(桑树)、水保林(松树)、水保林(白杨)、梯土(桃树+黑麦草)、梯土(玉米)等6种措施治理的坡耕地进行了对比试验.试验结果表明,梯土(桃树+黑麦草)的生态效益最佳,径流系数比对照措施减少了74.45%,产沙量比对照措施减少了90.39%,土壤容重最小(1.25 g/m.),总孔隙度最大(52.01%),最大稳渗速率达到5.6 mm/min,土壤有机质、全N、全P、全K和速效N、速效P、速效K的含量均最高.此外,调查研究也表明梯土(桃树+黑麦草)的经济效益最佳,高达13 950元;/hm<'2>.所以,梯土(桃树+黑麦草)是可以在三峡库区推广的小流域坡耕地治理措施.
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| 关 键 词： | 水土保持 坡耕地 治理措施 生态效益 |
| 收稿时间： | 2009-08-29 |
| 修稿时间： | 2009-12-07 |
Control Measures and Ecological Benefits on Sloping Farmland in a Small Watershed |
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| CHEN Yun,HE Bing-hui and LUO Lei. Control Measures and Ecological Benefits on Sloping Farmland in a Small Watershed[J]. Bulletin of Soil and Water Conservation, 2010, 30(2): 41-45 |
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| Authors: | CHEN Yun HE Bing-hui LUO Lei |
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| Affiliation: | College of Resources and Environment,and Southwest University,Key Laboratory of Eco-environments in Three Gorges Region( Ministry of Education),Southwest University,Chongqing 400715,China;College of Resources and Environment,and Southwest University,Key Laboratory of Eco-environments in Three Gorges Region( Ministry of Education),Southwest University,Chongqing 400715,China;State Key Laboratory of Soil Erosion and Dryland Farming on the Loess Plateau,Institute of Water and Soil Conservation,Chinese Academy of Sciences and Ministry of Water Resources,Yangling,Shaanxi 712100,China;Chongqing Research & Design Institute of Sino-Coal International Engineering Group (CCCD),Chongqing 400016 ,China |
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| Abstract: | In the management of sloping farmland in Tielugou small watershed in the Three Gorges Reservoir Region,measures such as terracing and forest were taken. In order to find out the measures with the best ecological benefits,19 runoff plots adopting 7 kinds of measures were established in the area by taking longitudinal farming (corn) as the contrast measure. Experimental results showed that terracing (peach + perennial ryegrass) gave the best ecological benefits. Other investigations also revealed that terracing (peach + perennial ryegrass) gave the best economic benefits,about 13 950 yuan/hm2. Therefore,terracing (peach + perennial ryegrass) was completely worthy of promotion in sloping land management in the Three Gorges Reservoir Resion. |
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| Keywords: | soil and water conservation sloping farmland control measures ecological benefits |
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