| 基于耗散结构理论的黄土丘陵区耕地利用变化分析 |
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| 引用本文： | 郝仕龙,曹连海,李春静.基于耗散结构理论的黄土丘陵区耕地利用变化分析[J].中国生态农业学报,2010,18(1):170-174. |
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| 作者姓名： | 郝仕龙 曹连海 李春静 |
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| 作者单位： | 1. 华北水利水电学院资源与环境学院,郑州,450011;中国科学院水利部水土保持研究所
2. 华北水利水电学院资源与环境学院,郑州,450011 |
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| 基金项目： | 华北水利水电学院高层次人才科研启动项目、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开放基金(10501-232) |
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| 摘 要： | 耕地利用和保护是关系我国国民经济和社会可持续发展的全局性战略问题。针对黄土高原耕地利用和保护面临的问题,根据耗散结构理论,以黄土丘陵区耕地资源为研究对象,通过分析黄土丘陵区耕地资源利用的特点,构建了耕地系统的熵流模型,耕地利用效益、光合转化效益及生态效益是影响该区域耕地系统有序性的关键。以上黄试区为例,分析了该试区不同时期耕地系统熵流变化的规律。结果表明,从"六五"时期至"十五"时期,通过对该试区耕地系统进行综合治理,耕地系统的熵值逐步减少,其不同时期的熵变值分别为-0.6524、-0.1988、-0.3421、-0.2664和-0.2900,表明耕地系统的有序性、稳定性逐步提高。
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| 关 键 词： | 耕地利用 耗散结构理论 熵流变化 黄土丘陵区 |
| 收稿时间： | 2009/2/10 0:00:00 |
Analysis of cultivated land utilization change in Loess Hilly and Gully regions based on dissipative structure theory |
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| HAO Shi-Long,CAO Lian-Hai and LI Chun-Jing.Analysis of cultivated land utilization change in Loess Hilly and Gully regions based on dissipative structure theory[J].Chinese Journal of Eco-Agriculture,2010,18(1):170-174. |
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| Authors: | HAO Shi-Long CAO Lian-Hai and LI Chun-Jing |
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| Institution: | 1. School of Resources and Environment, North China University of Water Conservancy and Electric Power, Zhengzhou 450011, China; 2. State Key Laboratory of Soil Erosion and Dryland Farming on the Loess Plateau, Institute of Water and Soil Conservation, Ch;School of Resources and Environment, North China University of Water Conservancy and Electric Power, Zhengzhou 450011, China;School of Resources and Environment, North China University of Water Conservancy and Electric Power, Zhengzhou 450011, China |
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| Abstract: | Cultivated land protection plays an important role on sustainable social-economic development in China.For the severe situation of land use and protection in the Loess Hilly and Gully region,a dissipative structure theory was used to set up an entropy change model in accordance with the characteristics of cultivated land utilization.Three factors including changes in benefits of cultivated land utilization,photosynthetic transformation and environment play key role in orderliness of cultivated land.Shanghua... |
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| Keywords: | Cultivated land utilization Dissipative structure theory Entropy change Loess Hilly and Gully region |
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