我国北方农牧交错带不同土地利用格局下生态效应研究
首发时间:2011-12-09
摘要:无论是在全球还是区域尺度上,人类对土地利用的改变在不断地导致地表覆盖的加速变化,在我国的农牧交错区进行土地利用变化下的生态系统效应研究,能够更好的进行全球生态环境的恢复和建设工作,保证区域的生态安全,对实现全球可持续发展有着重要的科学意义,本文利用模型模拟的方法,对我国北方农牧交错带的不同土地利用情景下的生态效应进行了模拟,发现不同的土地利用模式下,净第一性生产力、土壤侵蚀量、土壤有机质含量等都有较大的区别,在适宜性的模式下较其它几种模式下对于生态环境的保护和恢复都有较好的效果,现状模式以及耕地增加模式下的生态环境效应都相对较差,认为目前的土地利用结构和空间的分布上存在一定的可优化空间。
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The ecological effect under different Patterns of Land Use for the Farming-pastoral Zone in North China
Abstract:Whether in global or regional scale, human impact on land use change is constantly accelerating changes in land cover, the research of ecosystem effect under different land use change has better knowing to global ecological environmental restoration and construction, ensure regional ecological security, and has important scientific significance for achieving global sustainable development, Using the model simulation method, this paper simulated ecological effects of China's northern farming-pastoral zone under different land use scenarios, the result is the net primary productivity, soil erosion, soil organic matter content, etc. have a large difference between different land use patterns, the environment protection and recovery have better results under the suitability than other land use scenarios, under the status scenario and cropland increasing scenario eco-environmental effects are relatively poor, so the paper found the current land use structure and spatial distribution can be optimized on a certain space.
Keywords: Ecological effect Patterns of Land use The farming-pastoral zone in North China simulation model
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