GAO Yanjing,XIE Yuchu,QIAN Dawen,et al.Dynamic Variations of Vegetation Coverage and Landscape Pattern in Bailongjiang Basin of Southern Gansu[J].Research of Soil and Water Conservation,2015,22(01):181-187.
甘肃白龙江流域植被覆盖度及景观格局变化
- Title:
- Dynamic Variations of Vegetation Coverage and Landscape Pattern in Bailongjiang Basin of Southern Gansu
- Keywords:
- Bailongjiang Basin; NDVI; vegetation coverage; spatiotemporal variation; landscape pattern
- 分类号:
- X171.4
- 摘要:
- 基于1998—2012年SPOT NDVI数据，采用像元二分模型和景观格局分析方法，对甘肃白龙江流域植被覆盖度及景观格局时空变化及影响因素进行分析。结果表明：（1）1998—2012年白龙江流域植被覆盖度明显增加，高植被覆盖度面积增加量最大（737.30 km2），2012年中高和高植被覆盖度面积比例达70.7%，植被覆盖度增加区域主要分布在宕昌县北部、岷江东岸、舟曲—武都段白龙江两岸及其以北区域。（2）研究期间，白龙江流域植被覆盖整体改善、局地退化，植被覆盖度显著增加和轻度增加的总面积和比例分别为4 675.90 km2，25%，显著减少的面积仅占3.84%。（3）1998—2012年景观破碎度增大，斑块密度增加了58.23%；景观形状趋于复杂化，LSI，AWMPFD和IJI分别增大到25.14，1.128，80.01；香农多样性和均匀度指数分别减少到1.342，0.834。（4）白龙江流域植被覆盖度增加是自然因素和人为因素共同作用的结果，退耕还林、天然林保护等一系列生态工程的实施是植被覆盖度增加的主要原因。
- Abstract:
- Based on the SPOT NDVI during the period 1998—2012, this paper analyzes the fractional vegetation coverage temporal-spatial variation and landscape pattern in Bailongjiang Basin of southern Gansu by using the methods of dimidiate pixel model and landscape pattern analysis. Results are shown as the following: (1) from 1998 to 2012, fractional vegetation coverage of the study area increased, the area of high vegetation coverage increased apparently (about 737.30 km2), the ratio of high vegetation coverage to intermediate vegetation coverage was 70.7%, and the increased region mainly distributed in the northern Tanchang, the eastern riverside of Minjiang River, both sides of Bailongjiang River from Zhouqu to Wudu and north of it; (2) though the vegetation coverage presented an overall increase, it locally degraded in some areas, during that period, the areas and ratio of obviously increased region to slightly increased region were 4 675.90 km2, 25%, respectively, and the ratio of obviously decreased region only accounted for 3.84%; (3) from 1998 to 2012, the landscape fragmentation increased, with patch density increased by 58.23%; landscape shape was prone to be more complicated; LSI, AWMPFD, and IJI increased to 25.14, 1.128, and 80.01, respectively. In addition, SHDI and SHEI reduced to 1.342 and 0.834, respectively. (4) the improvement of the fractional vegetation coverage in Bailongjiang Basin was the interactive effect of natural factors and human activities, but the main cause was the implementation of the series of ecological projects, such as ‘Grain for Green Project’ and ‘Natural Forest Protection’.
参考文献/References:
[1] 孙红雨,王长耀,牛铮,等.中国地表植被覆盖变化及其与气候因子关系[J].遥感学报,1998,2(3):204-210.
[2] 胡良军,邵明安.论水土流失研究中的植被覆盖度量指标[J].西北林学院学报,2001,16(1):40-43.
[3] Sellers P J, Los S O, Tucker C J. A revised land surface parameterization(SiB2)for atmospheric GCMs. PartⅡ:the generation of global fields of terrestrial biophysical parameters from satellite data[J]. Journal of Climate,1996,9(4):706-737.
[4] 陈云浩,李晓兵,史培军,等.北京海淀区植被覆盖的遥感动态研究[J].植物生态学报,2001,25(5):588-593.
[5] 吴云,曾源,吴炳方,等.基于MODIS数据的三北防护林工程区植被覆盖度提取与分析[J].生态学杂志,2009,28(9):1712-1718.
[6] Samir M A, Mohamed A H. Vegetation dynamic in semi arid Butana Plain, Sudan[J]. Journal of Geography and Regional Planning, 2011(4):183-198.
[7] 李登科,范建忠,王娟.陕西省植被覆盖度变化特征及其成因[J].应用生态学报,2010,21(11):2896-2903.
[8] 陈效逑,王恒.1982-2003年内蒙古植被带和植被覆盖度的时空变化[J].地理学报,2009,64(1):84-94.
[9] 甘春英,王兮之,李保生,等.连江流域近18 a来植被覆盖度变化分析[J].地理科学,2011,31(8):1019-1024.
[10] 邓飞,全占军,于云江,等.20 a来乌兰木伦河流域植被盖度变化及影响因素[J].水土保持研究,2011,18(3):137-140.
[11] 王兮之,陆龙,梁钊雄,等.青海湟水流域植被覆盖度时空变化分析[J].水土保持研究,2010,17(6):172-176.
[12] 庞吉林,张克斌,乔娜,等.基于RS的盐池县近10 a植被覆盖度动态变化研究[J].水土保持研究,2012,19(4):112-115,121.
[13] 陈冠,孟兴民,乔良,等."7·22"岷县漳县地震地质灾害分布、特征及与影响因子间关系分析[J].工程地质学报,2013,21(5):750-760.
[14] 李苗苗,吴炳方,颜长珍,等.密云水库上游植被覆盖度的遥感估算[J].资源科学,2004,26(4):153-159.
[15] 王冬梅,孟兴民,邢钊,等.基于RS的武都区植被覆盖度动态变化及其驱动力分析[J].干旱区资源与环境,2012,26(11):92-97.
[16] 邬建国.景观生态学:格局、过程、尺度与等级[M].北京:高等教育出版社,2007.
[17] 陈文波,肖笃宁,李秀珍,等.景观指数分类、应用及构建研究[J].应用生态学报,2002,13(1):121-125.
[18] McGarigal K, Cushman S A, Neel M C, et al. FRAGSTATS:Spatial Pattern Analysis Program for Categorical Maps[M]. Massachusetts:University of Massachusetts, Amherst, 2002.
[19] 刘宪锋,杨勇,任志远,等.2000-2009年黄土高原地区植被覆盖度时空变化[J].中国沙漠,2013,33(4):1244-1249.
[20] 赵彩霞.甘肃白龙江流域生态风险评价[D].兰州:兰州大学,2013.
[21] 谢余初,巩杰,赵彩霞.甘肃白龙江流域水土流失的景观生态风险评价[J].生态学杂志,2014,33(3):702-708.
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备注/Memo
收稿日期:2014-02-24;改回日期:2014-04-10。
基金项目:国家自然科学资助项目（41271199）；国家科技支撑计划项目（2011BAK12B06）
作者简介:高彦净(1987-),女,河南南乐人,硕士研究生,研究方向:环境遥感与景观生态学。E-mail:gaoyj12@lzu.edu.cn
通讯作者:巩杰(1975-),男,甘肃宁县人,副教授,主要从事土地变化科学、景观生态学、生态评价与规划等科研教学工作。E-mail:jgong@lzu.edu.cn