Impact of Climate on Vegetation Phenology on Loess Plateau in Shaanxi-Gansu-Ningxia Region During 1999-2010

WEI Zhen-feng; REN Zhi-yuan; ZHANG Chong; LI Xiao-yan; ZHANG Jia-qi

doi:10.13961/j.cnki.stbctb.2014.05.049

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Impact of Climate on Vegetation Phenology on Loess Plateau in Shaanxi-Gansu-Ningxia Region During 1999-2010

- Impact of Climate on Vegetation Phenology on Loess Plateau in Shaanxi-Gansu-Ningxia Region During 1999-2010
- Bulletin of Soiland Water Conservation Vol. 33, Issue 5, Pages: 232-236(2014)
- 作者机构：
  
  1. 陕西师范大学旅游与环境学院,陕西,西安,710062
  2. 广西财经学院,广西,南宁,530003
  3. 陕西理工学院历史文化与旅游学院,陕西,汉中,723000
- 作者简介：
- 基金信息：
- DOI：10.13961/j.cnki.stbctb.2014.05.049
  CLC：
- Published：2014
- 稿件说明：
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WEI Zhen-feng, REN Zhi-yuan, ZHANG Chong, et al. Impact of Climate on Vegetation Phenology on Loess Plateau in Shaanxi-Gansu-Ningxia Region During 1999-2010[J]. Bulletin of Soiland Water Conservation, 2014, 33(5): 232-236.
DOI：

WEI Zhen-feng, REN Zhi-yuan, ZHANG Chong, et al. Impact of Climate on Vegetation Phenology on Loess Plateau in Shaanxi-Gansu-Ningxia Region During 1999-2010[J]. Bulletin of Soiland Water Conservation, 2014, 33(5): 232-236. DOI： 10.13961/j.cnki.stbctb.2014.05.049.

摘要

基于Spot Vegetation数据

采用植被物候分析、Hurst指数及偏相关系数等方法

分析了1999-2010年陕甘宁黄土高原区植被物候的时空变化特征、未来趋势及其驱动因素。结果表明:(1) 1999-2010年陕甘宁黄土高原区多年平均物候呈纬度地带性。随着纬度増高

生长季始期逐渐推迟

生长季长度缩短

生长季末期提前

反之

生长季始期呈提前

生长季长度延长

生长季末期推迟。(2)近12 a陕甘宁黄土高原区多年物候Hurst指数变化表现为同向持续性面积大于反持续性面积

呈较弱的持续性变化

分布规律大致都呈东西走向。(3)受降水影响

陕甘宁黄土高原区多年物候同时与纬度以及河流网有关。低纬度温度高

可促进植被对水分的吸收

因此在低纬度或者水资源丰富地区

植被返青提前

生长周期延长;相反

干旱低温的高纬度地区

植被生长停滞提前

生长周期缩短。

Abstract

Based on Spot Vegetation data

using the methods of vegetation phenology analysis

Hurst index and partial correlation coefficient

the spatial and temporal variation characteristics of vegetation phenology

developing trends and driving factors on Loess Plateau in Shaanxi-Gansu-Ningxia region during 1999-2010 were analyzed. The results showed that:(1) The average phenology in the region from 1999 to 2000 showed the characteristics of the latitudinal zonality. At the higher latitude area

the start of growth(SOG) was delayed

the long of growth season(LOG)was shorten

and the end of growth season(EOG) was advanced. On the contrary

the SOG was advanced

and the LOG was extended

and EOG was delayed.(2) The Hurst index of the phenology in the region during 12 years was showed that the synthetic sustainability area was greater than the anti-continuity area

with the weaker sustainability changing

and the area was general distributed in east-west orientation.(3) The phenology in the region was affected by rainfall

and related to the latitude and river network. The temperature in the lower latitude was higher

it could promote the vegetation to absorb more moisture

thus

the vegetation turning-green was advanced and the growth cycle was extended in the area of lower latitude or rich in water resource; On the contrary

the temperature in drought and higher latitudes was lower

the stagnation of vegetation growth was advanced

and the growth cycle was shorten.

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Keywords

references

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