Changes of Vegetation Cover and Carbon Fixation in Wuding River Basin During 2000-2013

WEI Hejie; ZHANG Yanfang; DONG Xiaobin; HU Xiaohuan; WANG Xuechao; LU Nachuan; ZHAO Yanan

doi:10.13961/j.cnki.stbctb.2016.01.009

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Changes of Vegetation Cover and Carbon Fixation in Wuding River Basin During 2000-2013

- Changes of Vegetation Cover and Carbon Fixation in Wuding River Basin During 2000-2013
- Bulletin of Soiland Water Conservation Vol. 36, Issue 1, Pages: 44-50(2016)
- 作者机构：
  
  1. 北京师范大学地表过程与资源生态国家重点实验室,北京,100875
  2. 北京师范大学资源学院,北京,100875
  3. 陕西师范大学旅游与环境学院,陕西,西安,710062
- 作者简介：
- 基金信息：
- DOI：10.13961/j.cnki.stbctb.2016.01.009
  CLC：
- Published：2016
- 稿件说明：
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WEI Hejie, ZHANG Yanfang, DONG Xiaobin, et al. Changes of Vegetation Cover and Carbon Fixation in Wuding River Basin During 2000-2013[J]. Bulletin of Soiland Water Conservation, 2016, 36(1): 44-50.
DOI：

WEI Hejie, ZHANG Yanfang, DONG Xiaobin, et al. Changes of Vegetation Cover and Carbon Fixation in Wuding River Basin During 2000-2013[J]. Bulletin of Soiland Water Conservation, 2016, 36(1): 44-50. DOI： 10.13961/j.cnki.stbctb.2016.01.009.

摘要

[目的

]

评估2000—2013年无定河流域水土保持和退耕还林(草)的成效

为评估无定河流域生态修复工程成效提供数据支撑. [方法

]

采用线性回归、相关系数和偏相关系数等方法

分析无定河流域2000—2013年NDVI(归一化植被指数)与NPP(净初级生产力)的变化及影响因素. [结果

]

(1) 2000—2013年

无定河流域植被覆盖增长率3.39%/a

远高于1999—2008年黄土高原植被覆盖增长率0.99%/a

且植被覆盖呈现阶段性的变化特征

其中有2次持续增长期.(2) 无定河流域植被覆盖变化以明显增加趋势为主

集中分布于黄土丘陵沟壑区

退化区域仅占3.95%

"线状"分布于植被覆盖基数较好的河谷两岸.(3) 2000—2013年

无定河流域植被累计固碳增加量1.96×10

相当于2010年陕西省能源消费碳排放的22.82%

累计固碳价值增加量2.36×10

元

相当于2010年陕西省GDP的2.33%. [结论

]

无定河流域植被覆盖与固碳持续增加

主要驱动因素为人类活动

尤其是水土保持和退耕还林(草)等工程的实施.

Abstract

[Objective] The objective of this study is to evaluate the effects of "soil and water conservation project" and "grain for green project" in Wuding river basin during 2000—2013 in order to provide data support for ecological rehabilitation project in this region. [Methods] By using linear regression

correlation and partial correlation

this paper analyzed the variations of NDVI and NPP and its driving factors in Wuding river basin during 2000—2013. [Results] (1) From 2000 to 2013

the growth rate of vegetation cover was 3.39%/a in the study area

which was faster than that in Loess Plateau (0.99%/a) from 1999 to 2008. The vegetation cover showed periodical characteristics

with two sustainable growth periods. (2) The vegetation cover was significantly increased in most area

especially the area distributed in the loess hilly-gully region in the southeast of the study area. The degradation area only accounted for 3.95%

and distributed on the both sides of the valley. (3) From 2000 to 2013

the accumulative total carbon sequestration was 1.96×107 t

which equated to 22.82% of carbon emissions from energy consumption in Shaanxi Province in 2010. The value of accumulative carbon sequestration was 2.36×1010 CNY

which equated to 2.33% of GDP in Shaanxi Province in 2010. [Conclusion] Human activity was the main driving force that influence the changes of vegetation cover and carbon sequestration

especially the implementation of "soil and water conservation project" and "grain for green project".

关键词

Keywords

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