| 草地植被净第一性生产力及固碳释氧量的估算 |
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| 引用本文： | 徐茜,王晓峰,任志远,李晶.草地植被净第一性生产力及固碳释氧量的估算[J].测绘科学,2012,37(5):132-134,144. |
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| 作者姓名： | 徐茜 王晓峰 任志远 李晶 |
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| 作者单位： | 1. 陕西师范大学旅游与环境学院,西安,710062
2. 长安大学资源学院,西安,710054 |
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| 基金项目： | 国家自然科学基金项目(41001388,41071057,41040011) |
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| 摘 要： | 草地植被净第一性生产力表征了草地生态系统的物质量,是评价草地生态系统物质生产能力的重要指标。本文基于ERDAS和ArcMap软件平台,由1990、2000和2007年ETM+影像数据提取出NDVI值,结合相应时段的气候数据,对陕北农牧交错带草地生态系统净第一性生产力及固碳释氧量进行测算,研究并分析了1990-2007年间其NPP及固碳释氧量的时空变化特征。
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| 关 键 词： | 陕北农牧交错带 NDVI 光能利用率模型 NPP 固碳释氧量 |
Estimation of NPP and fitting CO2 and releasing O2 of vegetation |
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| XU Qian
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WANG Xiao-feng
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REN Zhi-yuan
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LI Jing.Estimation of NPP and fitting CO2 and releasing O2 of vegetation[J].Science of Surveying and Mapping,2012,37(5):132-134,144. |
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| Authors: | XU Qian WANG Xiao-feng REN Zhi-yuan LI Jing |
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| Institution: | ①(①College of Tourism & Environment Science,Shaanxi Normal University,Xi’an 710062,China;②College of Earth and Land Resources,Chang’an University,Xi’an 710054,China) |
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| Abstract: | Grass NPP characters the physical quantity of grass ecosystem.It is the most important indicator when evaluating the material production capacity of grass ecological system.Based on ERDAS and ArcMap software platforms,the study estimated NPP and fitting CO2 and releasing O2 based on NDVI which were extracted from remote sensing data（ETM+） in 1990s,2000s,2007s and the relevant climate data in the farming-pastoral ecotone in North Shaanxi Province.Temporal and spatial dynamics change of NPP and fitting CO2 and releasing O2 were studied and analyzedfrom 1990a to 2007a as well. |
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| Keywords: | farming-pastoral ecotone in North Shaanxi Province NDVI light utility efficiency model NPP fitting CO2 and releasing O2 |
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