1. 陕西师范大学旅游与环境学院,陕西,西安,710062
2. 陕西理工学院秦岭与蜀道地理研究所,陕西,汉中,723001
纸质出版:2015
移动端阅览
马彩虹, 任志远. 陕西黄土台塬区植被-土壤系统碳收支估算[J]. 水土保持通报, 2015,35(3):231-234.
MA Caihong, REN Zhiyuan. Evaluation of Carbon Source or Sink of Vegetation and Soil System in Shaanxi Loess Platform Region[J]. Bulletin of Soiland Water Conservation, 2015, 35(3): 231-234.
马彩虹, 任志远. 陕西黄土台塬区植被-土壤系统碳收支估算[J]. 水土保持通报, 2015,35(3):231-234. DOI: 10.13961/j.cnki.stbctb.2015.03.049.
MA Caihong, REN Zhiyuan. Evaluation of Carbon Source or Sink of Vegetation and Soil System in Shaanxi Loess Platform Region[J]. Bulletin of Soiland Water Conservation, 2015, 35(3): 231-234. DOI: 10.13961/j.cnki.stbctb.2015.03.049.
[目的] 为土地利用的低碳战略提供决策依据。[方法] 基于GIS和RS分析与处理NDVI数据和Landsat遥感影像数据源
采用CASA光能利用模型对陕西黄土台塬区植被-土壤系统的碳收支进行估算。[结果] 1990-2010年陕西黄土台塬区植被-土壤系统碳源效应明显。其中
咸阳台塬区、宝鸡台塬区和西安台塬区有所减弱
但渭南台塬区和铜川台塬区有所增强。研究时段内
陕西黄土台塬区的高碳源区的面积由38.22%缩减为21.13%
中碳源区由57.40%扩大为67.71%
低碳塬区由3.43%扩大为7.76%;碳汇区由0.96%扩大为3.40%。[结论] 1990-2010年该区建设用地占用耕地、林地、草地
土地利用结构变化不利于碳固定
提高复种指数有利于降低植被-土壤系统的碳排放。
[Objective] To provide a decision basis for low-carbon strategy of land use and land cover change. [Methods] Based on RS and GIS
taking the data source of NDVI and Landsat
the carbon of vegetation and soil system in Shaanxi Loess platform region during 1990-2010 was calculated by the Carnegie-Ames-Stanford Approach(CASA) model. [Results] Large part in the research area was carbon source
however
the carbon sink area were small and mainly distributed in the northern part in Weinan loess platform. During the research period
the carbon source degree in Xianyang loess platform
Baoji loess platform and Xi'an loess platform decreased
whereas
of which in Weinan loess platform and Tongchuan platform increased in some degree. From 1990 to 2010
the high degree carbon source area decreased from 38.22% to 21.13%
middle degree carbon source area were the largest and improved from 57.40% to 67.71%
and the area of low degree carbon source increased from 3.43% to 7.76%.At the same period
the area of carbon sink enlarged from 0.96% to 3.40%. [Conclusion] Cultivated land
forest land and grass land were changed into built-up land were not benefit to the carbon sink
and the enhancing of cropping index benefit to the carbon sink of vegetation and soil system.
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