自然资源学报 ›› 2011, Vol. 26 ›› Issue (1): 58-65.doi: 10.11849/zrzyxb.2011.01.006

• 资源生态 • 上一篇    下一篇

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

韩永伟, 拓学森, 高吉喜, 刘成程, 高馨婷   

  1. 中国环境科学研究院 生态所, 北京 100012
  • 收稿日期:2010-06-07 修回日期:2010-08-24 出版日期:2011-01-30 发布日期:2011-01-30
  • 作者简介:韩永伟(1973- ),男,内蒙古人,副研究员,博士,主要从事农村生态保护与可持续发展研究。E-mail:hanyw@craes.org.cn
  • 基金资助:

    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)。

Assessment on the Sand-fixing Function and Its Value of the Vegetation in Eco-function Protection Areas of the Lower Reaches of the Heihe River

HAN Yong-wei, TUO Xue-sen, GAO Ji-xi, LIU Cheng-cheng, GAO Xin-ting   

  1. Chinese Research Academy of Environmental Sciences, Beijing 100012, China
  • Received:2010-06-07 Revised:2010-08-24 Online:2011-01-30 Published:2011-01-30

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9 056×104 t、4 972×104 t和6 296×104 t;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。

关键词: 植被, 防风固沙, 重要生态功能区, 黑河下游

Abstract: Assessing the ecosystem service function and its value was a hot topic in ecology and economics research, and the establishment of the key eco-function protection areas had great effect on the national security and the socio-economic development in China. This study offered a theoretical basis for the protection and construction of the key eco-function areas. The eco-function protection areas of the lower reaches of the Heihe River were located in Ejinaqi, Inner Mongolia, with an area of 5.1×104 km2. Supported by the techniques of RS and GIS, based on the RS data of 1986, 1996 and 2006, using the sand transport flux models, the sand-fixing function of vegetation and its economic value were assessed in the eco-function protection areas. The results showed that the amounts of the sand-fixing were 9056×104 t, 4972×104 t and 6296×104 t in 1986,1996 and 2006 respectively; the sand-fixing ability of different vegetation covers differed greatly, the forest land was the highest(9532 t/km2), shrubbery land was the second(9494 t/km2), and the low cover grassland was the smallest(5182 t/km2); the sand-fixing function decreased during the period of 1986-1996 and increased during 1996-2006; the spatial difference of sand-fixing function was obvious and the areas having higher sand-fixing ability spread sparsely in the high vegetation fraction areas around rivers and lakes; and the value of the sand-fixing function was higher, reaching 53.1×108 yuan in 2006, which was 5.1 times the value of the GDP in 2006.

Key words: vegetation, sand-fixing, eco-function protection areas, lower reaches of the Heihe River

中图分类号: 

  • F062.2