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| 近50年来重庆南川市三泉镇喀斯特区农田生态系统的演替分析 | |
| 引用本文： | 罗怀良,袁道先,陈浩.近50年来重庆南川市三泉镇喀斯特区农田生态系统的演替分析[J].中国岩溶,2007,26(3):230-236. |
| 作者姓名： | 罗怀良 袁道先 陈浩 |
| 作者单位： | 1. 西南大学地理科学学院,重庆,北碚,400715;四川师范大学地理与资源科学学院,四川,成都,610066 2. 西南大学地理科学学院,重庆,北碚,400715;中国地质科学院岩溶地质研究所、国土资源部岩溶动力学重点实验室,广西,桂林,541004 3. 四川师范大学地理与资源科学学院,四川,成都,610066 |
| 基金项目： | 西南大学校科研和校改项目 |
| 摘 要： | 农田生态系统是受人类生产活动影响显著的一种半自然人工生态系统,其演化过程是自然与人类活动共同作用的结果。喀斯特区农田生态系统具有空间分布上的破碎性、受水分限制明显、对外界影响既敏感又脆弱、人口压力巨大等特征。近50年来,南川市三泉镇农田生态系统由单纯的粮食生产系统向多种经营生态系统发展,复种指数不断上升,水田比例不断提高。随着农田生态系统组分的增多,其结构日趋复杂,农田生态环境逐步改善,农田生态系统正向良性方向发展。该区今后应因地制宜发展农业生产,加强农田基本建设,实施农业综合开发,促进农田生态系统稳定持续发展。 |
| 关 键 词： | 农田生态系统 喀斯特区 演替 南川市三泉镇 |
| 文章编号： | 1001-4810（2007）03-0230-07 |
| 收稿时间： | 2006-08-20 |
| 修稿时间： | 2006年8月20日 |
Evolution of farmland ecosystem in Sanquan town karst area,Nanchuan city, Chongqing Municipality |
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| LUO Huai-liang,YUAN Dao-xian and CHEN Hao.Evolution of farmland ecosystem in Sanquan town karst area,Nanchuan city, Chongqing Municipality[J].Carsologica Sinica,2007,26(3):230-236. | |
| Authors: | LUO Huai-liang YUAN Dao-xian and CHEN Hao |
| Institution: | 1.College of Geographical Sciences, Southwest University 2.College of Geography and Resources Science, Sichuan Normal University 3.Institute of Karst Geology , CAGS& Karst Dynamics Laboratory, MLR,1.College of Geographical Sciences, Southwest University 2.College of Geography and Resources Science, Sichuan Normal University 3.Institute of Karst Geology , CAGS& Karst Dynamics Laboratory, MLR and 1.College of Geographical Sciences, Southwest University 2.College of Geography and Resources Science, Sichuan Normal University 3.Institute of Karst Geology , CAGS& Karst Dynamics Laboratory, MLR |
| Abstract: | Farmland ecosystem is a semi-natural and artificial ecosystem that is deeply affected by human activity.The evolving process of farmland ecosystem reflects the joint effect of human activity and nature.The farmland ecosystem is of some characteristics in karst area,such as fragmentary sections,strictly restricted by water,very sensitive and frail to external impact,heavy population pressure.In the recent 50 years,farmland ecosystem in Sanquan town develops from simple food production to diversification ecosystem with continuous increasing in multiple crop index and continuous expanding in paddy field area.With the increase in farmland component,the structure of the farmland ecosystem becomes more and more complex;eco-environment is gradually improved and develops in a good way.In the future,some measures should be taken into account in the region,such as developing agriculture in the light of local conditions,enhancing farmland capital construction,carrying out agricultural comprehensive development,and promoting stable and sustainable development for the farmland ecosystem. |
| Keywords: | farmland ecosystem karst area evolution Sanquan town Nanchuan city |
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