Geomorphological Differentiation Characteristics of Land Use Change in Karst Rocky Desertification Area—A Case of Guanling-Zhenfeng Huajiang Rocky Desertification Comprehensive Demonstration Zone in Guizhou Province

Yin Linjiang; Zhou Zhongfa; Zhu Changli; Shang Mengjia

doi:10.13961/j.cnki.stbctb.2020.02.006

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Geomorphological Differentiation Characteristics of Land Use Change in Karst Rocky Desertification Area—A Case of Guanling-Zhenfeng Huajiang Rocky Desertification Comprehensive Demonstration Zone in Guizhou Province

- Geomorphological Differentiation Characteristics of Land Use Change in Karst Rocky Desertification Area—A Case of Guanling-Zhenfeng Huajiang Rocky Desertification Comprehensive Demonstration Zone in Guizhou Province
- Bulletin of Soiland Water Conservation Vol. 40, Issue 2, Pages: 37-46(2020)
- 作者机构：
  
  1. 贵州师范大学喀斯特研究院/地理与环境科学学院,贵州,贵阳,550001
  2. 国家喀斯特石漠化防治工程技术研究中心,贵州,贵阳,550001
- 作者简介：
- 基金信息：
- DOI：10.13961/j.cnki.stbctb.2020.02.006
  CLC： P951;F301.2
- Published：2020
- 稿件说明：
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Yin Linjiang, Zhou Zhongfa, Zhu Changli, et al. Geomorphological Differentiation Characteristics of Land Use Change in Karst Rocky Desertification Area—A Case of Guanling-Zhenfeng Huajiang Rocky Desertification Comprehensive Demonstration Zone in Guizhou Province[J]. Bulletin of Soiland Water Conservation, 2020, 40(2): 37-46.
DOI：

Yin Linjiang, Zhou Zhongfa, Zhu Changli, et al. Geomorphological Differentiation Characteristics of Land Use Change in Karst Rocky Desertification Area—A Case of Guanling-Zhenfeng Huajiang Rocky Desertification Comprehensive Demonstration Zone in Guizhou Province[J]. Bulletin of Soiland Water Conservation, 2020, 40(2): 37-46. DOI： 10.13961/j.cnki.stbctb.2020.02.006.

摘要

[目的] 探讨石漠化地区土地利用变化的地貌分异特征，揭示不同地貌条件下的土地利用时空变化的特征和规律，为石漠化地区土地的合理利用提供科学参照。[方法] 以贵州省关岭贞丰花江石漠化综合示范区为例，运用GIS和RS技术，基于2005，2010和2013年3个时期的土地利用数据、石漠化数据和地貌数据，运用地形分布指数、土地利用程度综合指数，对研究区土地利用变化的地貌分异进行研究。[结果] ①在2005-2013年间，喀斯特地区草地、建设用地、林地、未利用地和水域的面积有所增加，耕地、园地的面积在减少；石漠化的面积有所减少，石漠化程度正在逐渐减轻。②不同地貌条件下，每一个土地利用类型都有其存在的优势分布区；各土地利用类型的地貌分异基本稳定。③土地利用程度的地貌分异特征趋于稳定；2005-2013年，土地利用程度大小表现为：侵蚀台地 > 峰丛洼地 > 丘峰台地 > Ⅴ型峡谷 > 溶蚀-侵蚀陡坡。④不同地貌条件下不同石漠化等级在各土地类型中的分布方面，由侵蚀台地、峰丛洼地、丘峰台地、Ⅴ型峡谷、溶蚀-侵蚀陡坡地貌的石漠化土地类型分布来看，石漠化主要发生在耕地、林地、园地和未利用地4种土地利用上，水域不存在石漠化现象；2005-2013年，石漠化在不同地貌条件的地类中总体呈较好转变。[结论] 每一土地利用类型都有其分布的优势地貌区；不同地貌条件下，石漠化在不同土地利用类型上的分布存在差异，主要发生在耕地、林地、园地和未利用地4种土地利用类型区域。

Abstract

[Objective] The geomorphic differentiation characteristics of land use change in rocky desertification areas was explored

and the spatial-temporal change of land use under different geomorphologic conditions was investigated

in order to provide references for the rational use of land in rocky desertification areas.[Methods] Taking Guanling-Zhenfeng Huajiang rocky desertification comprehensive demonstration zone

Guizhou Province as a case study

the land use data

rocky desertification data

and geomorphic data in three periods of 2005

2010

and 2013 were collected. The topographic distribution index and the comprehensive index of land use degree were derived by using GIS and RS technology

to study the geomorphic changes of the land use change.[Results] ① From 2005 to 2013

the area of grassland

construction land

forest land

unused land and water area in the karst areas was increased

while the area of cultivated land and garden land was decreased. The area of rocky desertification was decreased and the degree of rocky desertification was gradually reduced. ② Under different geomorphologic conditions

each land use type had its own dominant distribution area

the geomorphic differentiation of each land use type was basically stable. ③ The geomorphic differentiation of land use degree tended to be stable. From 2005 to 2013

the degree of land use showed as follows:erosion platform > peak-cluster depression > hill peak plateau > V-shape valley > dissolution-erosion of steep slope. ④ In terms of the distribution of different rocky desertification levels in different land types under the same geomorphologic conditions

rocky desertification mainly occurred in cultivated land

forest land

garden land and unused land

according to the distribution of rocky desertified land types in erosion platform

peak-cluster depression

hill-peak platform

V-shape valley

and dissolution-erosion of steep slope. There was no rocky desertification in the water area. From 2005 to 2013

rocky desertification in different geomorphologic conditions of the land type generally showed good transformation.[Conclusion] Each land use type has its dominant geomorphic area. Under different geomorphologic conditions

the distribution of rocky desertification vary in different land use types

mainly occurred in cultivated land

forest land

garden land and unused land.

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