干旱区生态环境知识资源中心(Arid): 陕西省植被退化及其驱动因素分析

Arid

	陕西省植被退化及其驱动因素分析
其他题名	Analysis of vegetation degradation and its driving factors in Shaanxi Province
	李登科; 范建忠; 权文婷
来源期刊	生态学杂志
ISSN	1000-4890
出版年	2015
卷号	34 期号:10 页码:2907-2913
中文摘要	基于20002013年250 m分辨率MODIS NDVI数据,运用混合像元分解模型计算植被覆盖度,评价陕西植被退化情况,分析引起植被退化的主要因素,为进一步开展生态、城镇建设规划提供依据。结果表明: 1)陕西省植被退化区域主要分布在以西安市为主的关中城市群和榆林市以北的沙漠地带。植被退化面积最多的市是西安市,其次是榆林市,最少的是安康市。2)植被变化以改善和变化不明显为主,分别占土地总面积的48.03%和49.10%; 植被退化面积较少,占土地总面积2.87%,其中轻度退化、中度退化和重度退化的面积分别占总土地面积的1.39%、0.56%和0.92%。3)植被退化主要发生在农田,占总退化面积的54.36%。4)植被退化面积与新增建成区面积的关系达到极显著程度,说明随着城镇化的不断发展,城镇用地不断扩张,大量农田、森林、草地等植被覆盖度高的土地被占用,直接导致植被退化,因此在城镇规划中应重视绿地园林建设; 榆林市以北的沙漠地带局部区域植被仍在退化,应继续保护治沙成果和治理裸露沙地。
英文摘要	Based on the MODIS NDVI data of 250-m resolution during the period of 2000-2013, the mixed pixel decomposition model was employed to calculate vegetation coverage and evaluate vegetation degradation situation in Shaanxi Province,in order to analyze the main factors causing the degradation of vegetation and to provide a basis for ecological construction and the planning of urban construction. The results showed that: 1) The degradation areas of vegetation in Shaanxi Province were mainly distributed in the Guanzhong urban agglomeration,especially in Xian City and the desert belt in the north of Yulin City. Xian City was the city with the greatest vegetation degradation area,followed by Yulin City,and Ankang City had the least area. 2) The vegetation was mainly improved or not significantly changed,accounting for 48.03% and 49.10% of the total land area,respectively. The vegetation degradation area was smaller,accounting for 2.87% of the total land area,of which the areas of mild,moderate and severe degradation accounted for 1.39%,0.56% and 0.92% of the total land area,respectively. 3) Vegetation degradation occurred mainly in the farmland,accounting for 54.36% of the total degradation area. 4) The relationship between the vegetation degradation area and newly increased built area reached a significant level,indicating that the continuous development of urbanization came with the occupation of the farmland,forest and grassland with high degrees of vegetation coverage,thus directly leading to the degradation of vegetation. Therefore,attention should be paid on green space landscape construction in urban planning. Some vegetation in the desert region of the north of Yulin City continued to degrade,and desertification control should be continuously maintained.
中文关键词	植被退化 ; 植被覆盖度 ; 混合像元分解模型 ; 陕西省
英文关键词	MODIS vegetation degradation vegetation coverage mixed pixel decomposition model MODIS Shaanxi Province
语种	中文
国家	中国
收录类别	CSCD
WOS类目	PLANT SCIENCES
WOS研究方向	Plant Sciences
CSCD记录号	CSCD:5540993
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/233242
作者单位	陕西省农业遥感信息中心, 西安, 陕西 710014, 中国
推荐引用方式 GB/T 7714	李登科,范建忠,权文婷. 陕西省植被退化及其驱动因素分析[J],2015,34(10):2907-2913.
APA	李登科,范建忠,&权文婷.(2015).陕西省植被退化及其驱动因素分析.生态学杂志,34(10),2907-2913.
MLA	李登科,et al."陕西省植被退化及其驱动因素分析".生态学杂志 34.10(2015):2907-2913.