近30 年来青海三江源地区草地退化的时空特征
收稿日期: 2007-10-23
修回日期: 2007-12-24
网络出版日期: 2008-04-25
基金资助
中国科学院西部行动计划项目(KZCX2-XB2-06-03); 国家科技支撑计划项目(2006BAC08B00)
The Spatial and Temporal Characteristics of Grassland Degradation in the Three- River Headwaters Region in Qinghai Province
Received date: 2007-10-23
Revised date: 2007-12-24
Online published: 2008-04-25
Supported by
The CAS Action-plan for West Development, No.KZCX2-XB2-06-03; National Key Project of Scientific and Technical Supporting Programs, No.2006BAC08B00
在20 世纪70 年代中后期MSS 图像、90 年代初期TM 图像和2004 年TM/ETM 图像支 持下, 通过三期遥感影像的直接对比分析, 获得了三江源地区草地退化空间数据集, 并在此 基础上分析了70 年代以来青海三江源地区草地退化的主要时空特征。结果表明: 三江源地区 草地退化是一个在空间格局上影响范围大, 在时间过程上持续时间长的连续变化过程。研究 发现, 三江源草地退化的格局在70 年代中后期已基本形成, 70 年代中后期至今, 草地的退 化过程一直在继续发生, 总体上不存在90 年代至今的草地退化急剧加强现象。草地退化的过 程在不同区域和地带有明显不同的表现, 如在湿润半湿润地带的草甸类草地上, 发生着草地 破碎化先导, 随后发生覆盖度持续降低, 最后形成黑土滩的退化过程; 在干旱、半干旱地带 的草原类草地上, 发生着覆盖度持续降低, 最后形成沙地和荒漠化草地的退化过程。三江源 地区草地退化具有明显的区域差异, 草地退化可以分为7 个区, 各区草地退化在类型、程度、 范围与时间过程方面具有明显不同的特点。
刘纪远, 徐新良, 邵全琴 . 近30 年来青海三江源地区草地退化的时空特征[J]. 地理学报, 2008 , 63(4) : 364 -376 . DOI: 10.11821/xb200804001
Using MSS images in the middle and late 1970s, TM images in the early 1990s and TM/ETM images in 2004, grassland degradation in the Three-River Headwaters Region is interpreted through analysis on RS images in two time series, then the spatial and temporal characteristics of grassland degradation since the 1970s in the Three-River Headwaters Region are analyzed. The results show that grassland degradation in the Three-River Headwaters Region is a continuous changing process which has large area of influence and long time scale, and the drastic intensification phenomenon does not exist in the 1990s as a whole. Grassland degradation pattern in the Three-River Headwaters Region took shape initially in the middle and late 1970s, since the 1970s, this degradation process has taken place continuously, characterizing obviously different rules in different regions. Such as, in humid and sub-humid meadow grassland, grassland firstly fragmentizes, then the degree of vegetation coverage decreases continuously, and finally "black-soil-patch" degraded grassland formed. But in semiarid and arid steppe regions, the degree of grassland vegetation coverage decreases continuously, and finally desertification formed. Because grassland degradation has obvious regional diversity, grassland degradation in the Three-River Headwaters Region could be classified into seven regions, and each region has different characteristics in type, grade, scale and time process of grassland degradation.
[1] Li Bo. The degradation and countermeasure of grassland in North China. Chinese Agriculture Science, 1997, 6(2): 1-9.
[李博. 中国北方草地退化及其防治对策. 中国农业科学, 1997, 30(6): 1-9.]
[2] Zhao Xinquan, Zhou Huakun. Eco-environmental degradation, vegetation regeneration and sustainable development in the headwaters of Three Rivers on Tibetan Plateau. Bulletin of the Chinese Academy of Sciences, 2005, 20(6): 471-476.
[赵新全, 周华坤. 三江源区生态环境退化、恢复治理及其可持续发展. 中国科学院院刊, 2005, 20(6): 471-476.]
[3] Chen Guoming. The status of the degraded pasture and its strategies of management in black beach of the headwater region of the Three Rivers. Sichuan Caoyuan, 2005, (10): 37-44.
[陈国明. 三江源地区“黑土滩” 退化草地现状及治 理对策. 四川草原, 2005, (10): 37-44.]
[4] Wang Genxu, Cheng Guodong. Characteristics of grassland and ecological changes of vegetations in the source regions of Yangtze and Yellow River. Journal of Desert Research, 2001, 21(2): 101-107.
[王根绪, 程国栋. 江河源区的草地资 源特征与草地生态变化. 中国沙漠, 2001, 21(2): 101-107.]
[5] Liu Linshan. Alpine grassland degradation in the source region of the Yellow River: A case study in Dalag county. Doctor Dissertation of Graduate School of the Chinese Academy of Sciences, 2006.
[刘林山. 黄河源地区高寒草地退化 研究: 以达日县为例. 中国科学院研究生院博士学位论文, 2006.]
[6] Zhang Yili, Liu Linshan, Bai Wanqi et al. Grassland degradation in the source region of the Yellow River. Acta Geographica Sinica, 2006, 61(1): 3-14.
[张镱锂, 刘林山, 摆万奇等. 黄河源地区草地退化空间特征. 地理学报, 2006, 61(1): 3-14.]
[7] Liu Linshan, Zhang Yili, Bai Wanqi et al. Characteristics of grassland degradation and driving forces in the source region of the Yellow River from 1985 to 2000. J Geographical Sciences, 2006, 16(2): 131-142.
[8] Chen Quangong, Liang Tiangang, Wei Yaxing. Causes of grassland degradation in Dari county of Qinghai province. Acta Prataculturae Sinica, 1998, 7(4): 44-48.
[陈全功, 梁天刚, 卫亚星. 青海省达日县退化草地研究(II): 退化草地成 因分析与评估. 草业学报, 1998, 7(4): 44-48.]
[9] Chen Quangong, Wei Yaxing, Liang Tiangang. The investigation of grassland degradation in Dari county of Qinghai province (I): Remote sensing and mapping. Acta Prataculturae Sinica, 1998, 7(2):58-63.
[陈全功, 卫亚星, 梁天刚. 青海 省达日县退化草地研究(I): 退化草地遥感调查. 草业学报, 1998, 7(2): 58-63.]
[10] Tu Jun, Xiong Yan, Shi Dejun. Study on alpine meadow and grassland degradation with remote sensing techniques in Qinghai. Chin. J. Appl. Environ. Biol., 1999, 5(2): 131-135.
[涂军, 熊燕, 石德军. 青海高寒草甸草地退化的遥感技 术调查分析. 应用与环境生物学报, 1999, 5(2): 131-135.]
[11] Wang G, Qian J, Cheng G et al. Eco-environmental degradation and causal analysis in the source region of the Yellow River. Environmental Geology, 2001, 40(7): 884-890.
[12] Yang Jianping, Ding Yongjian, Chen Rensheng. Spatial and temporal of variations of alpine vegetation cover in the source regions of the Yangtze and Yellow rivers of the Tibetan Plateau from 1982 to 2001. Environ. Geol., 2006, 50: 313-322.
[13] Feng Jianmin, Wang Tao, Qi Shanzhong et al. Land degradation in the source region of the Yellow River, northeast Qinghai-Xizang Plateau: Classification and evaluation. Environ. Geol., 2005, 47: 459-466.
[14] Zhong Cheng, He Xiaorong, Li Huixia. Application of remote sensing technology to grassland degradation assessment in Naqu, Tibet. Remote Sensing Technology and Application, 2003, 18(2): 99-102.
[ 钟诚, 何晓蓉, 李辉霞. 遥感技术 在西藏那曲地区草地退化评价中的应用. 遥感技术与应用, 2003, 18(2): 99-102.]
[15] Li Huixia, Liu Shuzhen. A model of grassland degradation assessment based on NDVI. Journal of Mountain Science, 21(suppl.): 69-71.
[李辉霞, 刘淑珍. 基于NDVI 的西藏自治区草地退化评价模型. 山地学报, 2003, 21(增刊): 69-71]
[16] Dai Jiguang, Guo Wanqin, Yang Taibao. An analysis of grassland change and human factor function in headwater region of Yellow River based on NOAA-AVHRR data. Scientific and Technological Management of Land and Resources, 2006, 23: 109-112.
[戴激光, 郭万钦, 杨太保. 基于NOAA-AVHRR 的黄河源地区草地变化与人文因素 作用分析. 国土资源科技管理, 2006, 23: 109-112.]
[17] Shi Dejun, Qiao Anhai, Sa Wenjun et al. Applied research of using remote sensing technology to investigate alpine meadow grassland resource and degradation. Qinghai Prataculture, 1999, 8(1): 1-6.
[石德军, 乔安海, 洒文君等. 遥感 技术在高寒草甸及其退化草地上的应用研究. 青海草业, 1999, 8(1): 1-6.]
[18] Liu Xiaoling. The investigation for degenerate grassland of "degenerated meadow" in Sanjiangyuan Nature Reserve. Journal of Qinghai Normal University (Natural Science), 2007, (1): 93-96.
[刘晓玲. 三江源自然保护区“黑土滩”退化草地调查. 青海师范大学学报(自然科学版), 2007, (1): 93-96.]
[19] General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China. National Standard of the People's Republic of China: Parameters for Degradation, Sandification and Salification of Rangelands. Beijing: Standards Press of China, 2004.
[中华人民共和国国家质量监督检验检疫总局. 中华人民共和国国家标准: 天然草地退化、沙化、盐渍化的分机指标. 北京: 中国标准出版社, 2004.]`
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