| 放牧草地健康管理的生理指标 |
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| 引用本文： | 侯扶江,李广,常生华.放牧草地健康管理的生理指标[J].应用生态学报,2002,13(8):1049-1053. |
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| 作者姓名： | 侯扶江 李广 常生华 |
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| 作者单位： | 1. 兰州大学草地农业科技学院,甘肃草原生态研究所,兰州,730020
2. 甘肃农业大学,兰州,730070 |
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| 基金项目： | 国家重点基础研究发展规划项目 (G2 0 0 0 0 1860 2 )，国家自然科学基金西部重大研究计划项目 (90 10 2 0 11)，国家自然科学基金重点资助项目 (3 963 0 2 5 0 ) . |
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| 摘 要： | 依据草地对席子和牧的生理响应，用牧草生理低限（PLL），生理上限（PUL）和再生长期（R期）长度/放牧期（G期）长度的比值（R/G）等指标。构建了放牧草地健康评价的生理阈限双因子法，并以光合作用及其相关参数分析了多年生黑麦草轮牧草地的健康指标。维持草地适宜的双因子生理阈限的R/G比值，旨在放牧后草地功能与健康的完全恢复，是放牧草地可持续经营的目标。
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| 关 键 词： | 放牧草地 健康管理 生理指标 |
| 文章编号： | 1001-9329(2002)08-1049-05 |
| 修稿时间： | 2002年4月7日 |
Physiological indices of grazed grassland under health management |
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| HOU Fujiang ,LI Guang ,CHANG Shenghua.Physiological indices of grazed grassland under health management[J].Chinese Journal of Applied Ecology,2002,13(8):1049-1053. |
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| Authors: | HOU Fujiang LI Guang CHANG Shenghua |
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| Institution: | College of Pastoral Agriculture Science and Technology, Lanzhou University. |
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| Abstract: | Evaluation of the function and health of grazed grassland is an important aspect of grazing ecology.Based on analyzing the physiological response of grassland to grazing,a double factor method of physiological threshold was developed.Physiological low limit (PLL),physiological ultimate limit (PUL), and duration ratio of regrowth to grazing stage (R/G ratio) were feasible to evaluate the sustainable management on the function and health of grazed grasslands. The reasonable threshold values of PLL, PUL and R/G ratio could play an important role on the complete recovery of the function and health of grassland after grazing, which was the goal of sustainable management of grassland ecosystems. |
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| Keywords: | Grazed grassland Health evaluation Double factor method of physiological threshold |
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