Study on Land Degradation Characteristics of Different Types in Mountain Areas in Southwest China

  • Institute of Mountain Hazards and Environment, Chinese Academy of Sciences & Ministry of Water Conservancy, Chengdu, Sichuan 610041

Received date: 2000-07-29

  Revised date: 2000-11-22

  Online published: 2001-05-20


Land degradation is not only a great environmental problem at present, but a great economic and social problem. Land degradation in southwest China is mainly formed by water erosion. This paper, briefly descibed the land degradation status (slight, moderate and severe degraded land area is respectively 188852.5, 48128.81 and 16.393.62 km2, and respectively makes up 14.30%,3.50% and 1.10% of the total area of southwest China)in southwest China, analyzed different land degradation types of 4 choosed areas(Chuxiong City in Yunnan Plateau(degraded area is 1159.44 km2 and makes up 26.17% of the total area), Suining City in hilly area in middle Sichuan Basin(degraded area is 3188.51 km2, makes up 59.93% of the total area), Bijie Prefecture in lime stone area in Guizhou Province(degraded area is 9055.30 km2, makes up 33.70% of the total area) and Yuanmou County in dry-hot valley in Yunnan Province (degraded area below 1350m of altitude is 1006.02 km2, makes up 70.15% of the total area)),discussed land degradation process(The land degradation process is under fragile eco-environment(great height difference, steep slope, frequent heavy rain and rainstorm),human unreasonable social-economic activity (reclaim slope land, cut forest, over grazing, etc.) caused the process of land degradation), proposed ways(prevention and control of land degradation by the law; strictly control population with the N range of the equation: 0.2113K <0.7887 K (K is the environment bearing capacity); strengthen agricultural basic construction and adjust agricultural structure; strengthen forest protection and afforestation; control livestock quantity and grazing intensity) to control and regulate land degradation.

Cite this article

ZHANG Jian-ping . Study on Land Degradation Characteristics of Different Types in Mountain Areas in Southwest China[J]. SCIENTIA GEOGRAPHICA SINICA, 2001 , 21(3) : 236 -241 . DOI: 10.13249/j.cnki.sgs.2001.03.236


[1] 刘淑珍,等.云南元谋土地荒漠化特征及原因分析[J].中国沙漠,1996,16(1):1~8.
[2] 张信宝,等.中国西南地区脆弱环境类型初探.赵桂久,刘燕华等.生态环境综合整治与恢复技术研究(第二集).北京:北京科学技术出版社,1995,2:135~139.
[3] 张建平. 中国西南地区的土地退化及其调控.中国科学技术学会.中国西部生态重建与经济协调发展学术研讨会论文集. 四川科学技术出版社,1999,7:386~390.
[4] 张建平,等.楚雄市土地退化分析.水土保持通报[J],1998,18(3):16~19.
[5] Zhang Jian-ping.Soil erosion in Guizhou province of China:a case study in Bijie prefecture[J].Soil Use and Management,1999,15(1):68-70.
[6] 张建平.元谋干热河谷区土地退化研究[J].云南地理环境研究,2000,12(1):1~8.
[7] 张建平. 元谋干热河谷土地退化的人为影响[J].山地研究,1997, 15(1):53~56.
[8] 张建平.攀枝花市土地退化过程[J].山地研究,1997,15(4):308~310.
[9] 艾南山,岳天祥.持续发展的熵模型.喻传赞,彭匡远等编,熵、信息与交叉科学——迈向21世纪的探索和应用.昆明:云南大学出版社,1994.90~101.
[10] 张建平,等. 元谋干热河谷区生态环境变迁探讨[J]. 地理科学,2000,20(2):148~152.