黑河下游重要生态功能区植被防风固沙功能及其价值初步评估

发布时间：2018-03-11 04:09

本文选题：植被　切入点：防风固沙　出处：《自然资源学报》2011年01期 　论文类型：期刊论文

【摘要】：在遥感和地理信息系统支持下,利用风蚀输沙率模型,对1986—2006年期间黑河下游重要生态功能区植被的防风固沙功能及其价值进行了估算。结果表明:1986、1996和2006年研究区植被防风固沙量分别为9 056×104t、4 972×104t和6 296×104t;不同植被覆盖的土地类型中,有林地防风固沙能力最强,其次为灌木林,低覆盖度草地最小;1986—2006年,区域植被生态系统的防风固沙功能呈现出先减弱后增强的趋势;植被防风固沙功能的空间分布差异性明显,防风固沙能力较高的区域主要零散分布在河流、湖泊沿岸等植被覆盖状况较好的区域;研究区域植被生态系统的防风固沙功能价值较大,2006年达到53.1×108元,明显高于当年研究区的GDP。
[Abstract]:With the support of remote sensing and geographic information system, using the wind erosion sediment transport rate model, The wind and sand fixation function and value of vegetation in the important ecological functional areas of the lower reaches of Heihe River from 1986 to 2006 were estimated. The results showed that the amount of wind and sand fixation of vegetation in the study area in 1996 and 2006 was 9 056 脳 10 4 t 4 972 脳 10 4 t and 6 296 脳 10 4 t, respectively. The ability of windbreak and sand fixation was the strongest in forestland, followed by shrubbery, and the minimum of grassland with low coverage was the smallest in 1986-2006. The function of wind and sand fixation in regional vegetation ecosystem showed the tendency of weakening first and then strengthening, and the spatial distribution difference of the function of wind and sand fixation of vegetation was obvious. The area with high wind and sand fixation ability is mainly scattered in the areas with better vegetation coverage along the rivers and lakes, and the value of the function of the vegetation ecosystem in the study area is greater, reaching 53.1 脳 10 ~ 8 yuan in 2006, which is obviously higher than that of the GDP in the current study area.
【作者单位】：中国环境科学研究院生态所;
【基金】：科技部环保公益性行业科研专项(200709007) 国家“十一五”科技支撑计划课题(2009BADC2B03)
【分类号】：F062.2

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