论文

贵州省关岭县土地利用/土地覆被变化及土壤侵蚀效应研究

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  • 1. 中国环境规划院, 北京 100012;
    2. 北京大学资源与环境地理学系, 北京 100871

收稿日期: 2003-09-15

  修回日期: 2004-05-08

  网络出版日期: 2004-09-20

基金资助

国家自然科学基金项目(40335046)资助.

Land Use/Land Cover Change and Soil Erosion Impact of Karst Area In Guanling County, Guizhou Province

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  • 1. Chinese Academy for Environmental Planning, Beijing 100012;
    2. Department of Resources Environment and Geography, Peking University, Beijing 100871

Received date: 2003-09-15

  Revised date: 2004-05-08

  Online published: 2004-09-20

摘要

以贵州省关岭县为例,利用1987和1999年两个时段TM影象和相关资料,分析研究区12年间的土地利用/土地覆被变化及其土壤侵蚀风险。发现:(1)研究区土地利用动态变化较大,年均土地利用综合动态指数为1.36%;(2)旱地和草地互相转化比例高,草地开垦为旱地和旱地弃耕为草地的动态变化幅度远远超过旱地和草地最终面积变化的幅度;(3)山区土地利用的空间变化主要体现在垂直方向;(4)研究区裸土面积下降,一部分被植被覆盖,另一部分由于土壤流失殆尽,形成裸露基岩,故植被覆盖率和基岩出露率上升;(5)石漠化程度加剧,其中旱地石漠化发展速度最快;(6)土壤侵蚀形势严峻。

本文引用格式

万军, 蔡运龙, 张惠远, 饶胜 . 贵州省关岭县土地利用/土地覆被变化及土壤侵蚀效应研究[J]. 地理科学, 2004 , 24(5) : 573 -579 . DOI: 10.13249/j.cnki.sgs.2004.05.573

Abstract

There is a very serious ecology degradation caused by overuse of land in the Karst area, which is one of the main ecology fragile in southwest of China. This article focuses on a local site—Guanling County, Guizhou province —as a background, and land use/ land cover change as well as its ecology environment impact of the past 12 years in that area is fully researched based on 1987 and 1999 TM images and other relative data. There are some conclusions below: ① Land use has been changed dynamically and obviously, indicated by LUDC (Land Use Dynamic Change) index, which is 1.36% per year; ② The dynamic changes of dry land and grass land are main forms. The dynamic change of reclaimed and abandoned dry land is wilder than that of static change of increased dry land drastically; ③ Land use condition in mountain area is effectively evaluated by the LB (Land Center) index created by the author; ④ The ratio of bare soil is decreased, while the ratios of vegetation cover and naked rock are increased. Besides, the decrease of bare soil is caused partly by the plantation and the soil loss, the latter can make the bare soil turn into naked rock; ⑤ The staggering soil loss contributes the desertification from 22.50% to 26.58%, especially in the dry land where there is a fastest development; ⑥The antierosion life of the bare soil isn't longer than 45.5a by the erosion velocity during 1987-1999 and all the soil will be corroded completely in 86.5a.

参考文献

[1] 袁道先, 蔡桂鸿. 岩溶环境学[M]. 重庆: 重庆出版社, 1988.
[2] 国家计划委员会. 国家科学技术委员会中国21世纪议程——中国21世纪人口. 环境与发展白皮书[M]. 北京: 中国环境科学出版社,1994.
[3] 蔡运龙,蒙吉军. 退化土地的生态重建:社会工程途径[J]. 地理科学, 1999, 19(13):198~204.
[4] 张惠远, 蔡运龙. 喀斯特贫困山区的生态重建:区域范型[J].资源科学, 2000, 22(5):21~26.
[5] 万 军, 蔡运龙. 喀斯特生态脆弱区的土地退化与生态重建——以贵州省关岭县为例[J]. 中国人口·资源与环境,2003, 13(2): 52~56.
[6] 周 斌.针对土地覆盖变化的多时向遥感探测方法[J]. 矿物学报, 2000, 20(2):165~171.
[7] 王秀兰,包玉海. 土地利用动态变化研究方法探讨[J].地理科学进展, 1999,18(1): 81~87.
[8] 张镱鋰,阎建忠,刘林山,等.青藏公路对区域土地利用和景观格局的影响——以格尔木至唐古拉山段为例[J].地理学报, 2002,57(3): 253~266.
[9] 高志强, 刘纪远, 庄大方. 中国耕地面积重心及耕地生态背景质量的动态变化[J]. 自然资源学报, 1998, 13(1):92~96.
[10] 许学工,杜巧玲,郭洪海,等. 黄河三角洲土地利用和土地覆被质量变化[J]. 地理学报, 2001,56(6): 640~648.
[11] 韦中亚. 石家庄市土壤侵蚀定量评价研究[J]. 水土保持研究, 1999,6(4):41~44.
[12] 马超飞, 马建文, 布和敖斯尔. USLE模型中植被覆盖因子的遥感数据定量估算[J]. 水土保持通报, 2001,21(4):6~9.
[13] Metternicht G I ,Fermont A. Estimating erosion surface features by linear mixture modeling [J]. Emote Sens. Environ, 1998, 64:254~265
[14] 赵英时. 美国中西部沙山地区环境变化的遥感研究[J]. 地理研究, 2001, 20(2):213~219.
[15] Smith O M, Ustin L S, Adams B J ,et al. A. Vegetation in Deserts: I. A regional measure of abundance from multispectral images [J].Remote Sens. Environs,1990, 31:1~26.
[16] 万 军, 蔡运龙. 应用线性光谱分离技术研究喀斯特地区土地覆被变化[J].地理研究,2003,22(4): 439~446.
[17] 周忠发, 安裕伦. 贵州省水土流失遥感现状调查及空间变化分析[J]. 水土保持通报, 2000,20(6):23~26.
[18] 安裕伦, 蔡广鹏, 熊书益. 贵州高原水土流失及其影响因素研究[J]. 水土保持通报, 1999, 19(3): 47~52.
[19] 彭 建, 杨明德. 贵州花江喀斯特峡谷水土流失状态分析[J]. 山地学报, 2001, 19(6):511~515.
[20] 柴宗新. 试论广西岩溶区土壤侵蚀[J]. 山地研究, 1987, 7(4):255~259.
[21] 周 斌,杨柏林,洪业汤. 基于GIS的岩溶地区水土流失遥感定量监测研究——以贵州省(原)安顺市为例[J].矿物学报, 2000, 20(1): 13~21.
[22] 万 军, 蔡运龙, 路云阁,等. 基于石漠化扩展速度的喀斯特地区土壤侵蚀风险评价[J]. 水土保持研究,2003, 10(3): 148~153.
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