干旱区生态环境知识资源中心(Arid): 贵州土地石漠化类型时空演变过程及其评价

Arid

	贵州土地石漠化类型时空演变过程及其评价
其他题名	Spatio-temporal Evolution Process and Its Evaluation Method of Karst Rocky Desertification in Guizhou Province
	白晓永 1; 王世杰2 ; 陈起伟 3; 程安云 2; 倪雪波 2
ISSN	0375-5444
出版年	2009
卷号	64 期号:5 页码:609-618
中文摘要	构建了贵州20世纪80年代、90年代和21世纪初等3期历史石漠化数据,利用其空间变换和数学模型详细探讨和评价了石漠化的时空演变过程,研究发现:(1)研究时段内贵州省石漠化总面积变化不明显,但石漠化内部类型之间的相互演变非常显著,各类型之间的演变具有转移、多变、"此消彼长"的特点.(2)石漠化的时空演变过程可分为单变方式、层变方式、返变方式等3种基本类型,其中以层变方式为主.单变方式为辅.返变方式较少.(3)石漠化正向演变与逆向演变并存,治理速度赶不上恶化速度,两者的比值为82.29%,局部治理,整体恶化.(4)各石漠化类型总的演变速率是398.31 km~2·a~(-1),石漠化等级越高,演变速率越慢.(5)石漠化演变频率最快的是中度石漠化和潜在石漠化.轻度石漠化的演变频率明显低于中度石漠化.对石漠化的空间演变区域特征和影响因子做了宏观的定性分析、并根据石漠化演变特点对综合治理提出了相应的建议.
英文摘要	In this paper the spatial-temporal evolution processes of KRD land in Guizhou Province was analyzed mathematically by using 1:100000 scale digital-distribution maps of KRD land obtained by user-computer interactive interpreting method from Landsat images in 1986, 1995 and 2000. The following conclusions are obtained: (1) From 1986 to 2000, the change in total area of KRD land in Guizhou was not obvious, but the mutual transformation of different KRD types is extremely remarkable. (2) The change patterns of KRD land are divided into three kinds: simple change mode, continuous change mode and returned change mode, and characterized by continuous change mode. (3) The forward and reversion evolution processes coexist, with the ratio of the former to the latter being 82.29%, demonstrating that the situation is getting better partially and on the whole it is worsening. (4) The rate of the KRD evolution is 398.31 km~2 per year, and the change rate of different type KRD land is inverse proportion to its degree of degradation. (5) The change frequencies of moderate and potential KRD land is highest and obviously higher than that of light KRD land. The regional characteristics of KRD spatial evolution and its influencing factors are analyzed, and some suggestions on comprehensive control of KRD land are put forward.
中文关键词	石漠化 ; 时空演变 ; 贵州
英文关键词	karst rocky desertification spatial-temporal evolution Guizhou
语种	中文
国家	中国
收录类别	CSCD
WOS类目	GEOSCIENCES MULTIDISCIPLINARY
WOS研究方向	Geology
CSCD记录号	CSCD:3570027
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/223373
作者单位	1.中国科学院、水利部成都山地灾害与环境研究所, 成都, 四川 610041, 中国; 2.中国科学院地球化学研究所, 环境地球化学国家重点实验室, 贵阳, 贵州 550002, 中国; 3.贵州教育学院, 贵阳, 贵州 550003, 中国
推荐引用方式 GB/T 7714	白晓永,王世杰,陈起伟,等. 贵州土地石漠化类型时空演变过程及其评价[J],2009,64(5):609-618.
APA	白晓永,王世杰,陈起伟,程安云,&倪雪波.(2009).贵州土地石漠化类型时空演变过程及其评价.,64(5),609-618.
MLA	白晓永,et al."贵州土地石漠化类型时空演变过程及其评价".64.5(2009):609-618.