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中国沙漠 ›› 2010, Vol. 30 ›› Issue (1): 154-160.

• 生物土壤与生态 • 上一篇    下一篇

玛曲退牧还草工程生态效果的遥感监测

郭 铌1, 韩天虎2, 王 静1, 韩 涛3, 孙 斌2   

  1. 1.中国气象局 兰州干旱气象研究所 甘肃省干旱气候变化与减灾重点实验室, 中国气象局 干旱气候变化与减灾重点实验室, 甘肃 兰州 730020; 2.甘肃省草原技术推广总站, 甘肃 兰州 730020; 3.兰州区域气候中心, 甘肃 兰州 730020
  • 收稿日期:2008-10-23 修回日期:2009-07-13 出版日期:2010-01-20 发布日期:2010-01-20

Ecological Effects of “Restoring Grazing to Grassland Project” in Maqu County

GUO Ni1, HAN Tian-hu2, WANG Jing1, HAN Tao3, SUN Bin2   

  1. 1.Lanzhou Institute of Arid Meteorology, CMA; Key Laboratory of Arid Climatic Change and Reducing Disaster; Key Open Laboratory of Arid Climate Change and Disaster Reduction of CMA, Lanzhou 730020, China; 2.Central Station for Popularizing Grassland Techniques of Gansu Province, Lanzhou 730020, China; 3.Lanzhou Regional Meteorological Center of CMA, Lanzhou 730020, China
  • Received:2008-10-23 Revised:2009-07-13 Online:2010-01-20 Published:2010-01-20

摘要: 为了了解退牧还草工程对玛曲草地生态恢复的效果,利用MODIS卫星遥感资料、地面草地调查资料、退牧还草工程围栏资料和乡行政边界,分别从地面草地监测、不同退牧还草措施的遥感监测对比、玛曲各乡退牧还草效果的遥感监测以及玛曲植被空间变化等方面,对退牧还草工程对玛曲草地恢复的效果进行了研究。结果表明:①退牧还草后的2005年和2006年,工程区内植被盖度较工程区外提高6.8%和5.6%,高度提高69.2%和61.5%,生物量提高30.2%和30.6%。②2005和2006年禁牧区的平均NDVI分别较退牧前提高了3.4%和2.6%,休牧区提高了3.0%和0.9%。③植被的空间分布显示,退牧后2005年和2006年大多数退牧还草围栏内植被指数较2004年高,围栏内NDVI较2004年增加5%~50%,以2005年增加最为显著。④退牧还草工程对玛曲草地生态环境恢复效果均是明显的,其中禁牧的效果较退牧更为显著。

关键词: 玛曲, 退牧还草, MODIS, 植被指数, 草地

Abstract: The ecological effects of Restoring Grazing to Grassland Project in Maqu County are studied with MODIS data and field investigation data. The results showed that: ①The coverage, the height and the biomass in the project region increased 6.8%, 69.2% and 30.2% in 2005, parallelly 5.6%, 61.5% and 30.6% in 2006, respectively. ②The mean NDVI index in prohibition-grazing and rest-grazing regions increased 3.4% and 3.0% in 2005, and 2.6% and 0.9% in 2006, respectively. ③The NDVI index in enclosure increased 5%~50% in 2005 and 2006 more than 2004, obviously in 2005. In a word, the effects of Restoring Grazing to Grassland Project in Maqu County are obvious, especially in prohibition-grazing region.

Key words: Maqu county, restoring grazing to grassland, MODIS, vegetation index, grassland

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