ECO-ENVIRONMENT CHANGE AND SOIL EROSION PROCESS IN THE RECLAIMED FORESTLAND OF THE LOESS PLATEAU

ZHA Xiao-chun; TANG Ke-li

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ECO-ENVIRONMENT CHANGE AND SOIL EROSION PROCESS IN THE RECLAIMED FORESTLAND OF THE LOESS PLATEAU

ZHA Xiao-chun, TANG Ke-li

文章导航 > Chinese Geographical Science > 2003 > 13(3): 232-237

ZHA Xiao-chun, TANG Ke-li. ECO-ENVIRONMENT CHANGE AND SOIL EROSION PROCESS IN THE RECLAIMED FORESTLAND OF THE LOESS PLATEAU[J]. 中国地理科学, 2003, 13(3): 232-237.

引用本文:

ZHA Xiao-chun, TANG Ke-li. ECO-ENVIRONMENT CHANGE AND SOIL EROSION PROCESS IN THE RECLAIMED FORESTLAND OF THE LOESS PLATEAU[J]. 中国地理科学, 2003, 13(3): 232-237.

ZHA Xiao-chun, TANG Ke-li. ECO-ENVIRONMENT CHANGE AND SOIL EROSION PROCESS IN THE RECLAIMED FORESTLAND OF THE LOESS PLATEAU[J]. Chinese Geographical Science, 2003, 13(3): 232-237.

Citation:

ZHA Xiao-chun, TANG Ke-li. ECO-ENVIRONMENT CHANGE AND SOIL EROSION PROCESS IN THE RECLAIMED FORESTLAND OF THE LOESS PLATEAU[J]. Chinese Geographical Science, 2003, 13(3): 232-237.

ECO-ENVIRONMENT CHANGE AND SOIL EROSION PROCESS IN THE RECLAIMED FORESTLAND OF THE LOESS PLATEAU

ZHA Xiao-chun¹,
TANG Ke-li²

1.
College of Tourism and Environment Science, Shaanxi Normal University, Xi'an 710062, P. R. China;
2.
Institute of Soil and Water Conservation, Chinese Academy of Sciences and Ministry of Water Resources, Yangling 712100, P. R. China

基金项目: Under the auspices of the National Natural Science Foundation of China(No.19832060)

详细信息

作者简介:
ZHA Xiao-chun(1972- ), male, a native of Nanzheng County of Shaanxi Province, master of science, specialized in soil erosion change and control. E-mail:xiaochzh@sina.com

中图分类号: S157;S152.9

ECO-ENVIRONMENT CHANGE AND SOIL EROSION PROCESS IN THE RECLAIMED FORESTLAND OF THE LOESS PLATEAU

ZHA Xiao-chun¹,
TANG Ke-li²

1.
College of Tourism and Environment Science, Shaanxi Normal University, Xi'an 710062, P. R. China;
2.
Institute of Soil and Water Conservation, Chinese Academy of Sciences and Ministry of Water Resources, Yangling 712100, P. R. China

摘要: Serious soil erosion has made the eco-environment fragile in the Loess Plateau. Based on the 10-year data observed from 1989 to 1998 in the Ziwuling Survey Station in loess hilly region, the eco-environment change and soil erosion process in reclaimed forestland were studied in this paper. The results showed that the intensity of man-made soil erosion caused by forestland reclamation was 1000 times more than that of the natural erosion. From the analysis of soil physical and mechanical properties, in the 10th year after forestland was reclaimed, the clay content and physical clay content decreased 2.74 percentage point and 3.01 percentage point respectively, the >0.25mm waterstable aggregate content decreased 31.59 percentage point, the soil bulk density increased and soil shear strength decreased, all of which were easier to cause soil erosion. The correlation analysis showed that >0.25mm waterstable aggregate content was the key factor affecting soil erosion, and the secondary factors were soil coarse grain and soil shear strength. The relation between the >0.25mm waterstable aggregate content, the soil sheer strength and the soil erosion intensity were analyzed, which showed that the first year and the seventh erosion year were the turn years of the soil erosion intensity after the forestland was reclaimed, revealed that the change of eco-environment was the main cause to accelerate soil erosion, and the worse environment caused soil erosion to be serious rapidly.
- loess hilly region /
- reclaimed forestland /
- soil erosion /
- eco-environment change
Abstract: Serious soil erosion has made the eco-environment fragile in the Loess Plateau. Based on the 10-year data observed from 1989 to 1998 in the Ziwuling Survey Station in loess hilly region, the eco-environment change and soil erosion process in reclaimed forestland were studied in this paper. The results showed that the intensity of man-made soil erosion caused by forestland reclamation was 1000 times more than that of the natural erosion. From the analysis of soil physical and mechanical properties, in the 10th year after forestland was reclaimed, the clay content and physical clay content decreased 2.74 percentage point and 3.01 percentage point respectively, the >0.25mm waterstable aggregate content decreased 31.59 percentage point, the soil bulk density increased and soil shear strength decreased, all of which were easier to cause soil erosion. The correlation analysis showed that >0.25mm waterstable aggregate content was the key factor affecting soil erosion, and the secondary factors were soil coarse grain and soil shear strength. The relation between the >0.25mm waterstable aggregate content, the soil sheer strength and the soil erosion intensity were analyzed, which showed that the first year and the seventh erosion year were the turn years of the soil erosion intensity after the forestland was reclaimed, revealed that the change of eco-environment was the main cause to accelerate soil erosion, and the worse environment caused soil erosion to be serious rapidly.
- loess hilly region /
- reclaimed forestland /
- soil erosion /
- eco-environment change

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ECO-ENVIRONMENT CHANGE AND SOIL EROSION PROCESS IN THE RECLAIMED FORESTLAND OF THE LOESS PLATEAU

ZHA Xiao-chun¹,
TANG Ke-li²

1. College of Tourism and Environment Science, Shaanxi Normal University, Xi'an 710062, P. R. China;

2. Institute of Soil and Water Conservation, Chinese Academy of Sciences and Ministry of Water Resources, Yangling 712100, P. R. China

基金项目: Under the auspices of the National Natural Science Foundation of China(No.19832060)

作者简介:
ZHA Xiao-chun(1972- ), male, a native of Nanzheng County of Shaanxi Province, master of science, specialized in soil erosion change and control. E-mail:xiaochzh@sina.com

收稿日期: 2002-10-24
刊出日期: 2003-09-20

中图分类号: S157;S152.9

关键词:

loess hilly region /

reclaimed forestland /

soil erosion /

eco-environment change

摘要: Serious soil erosion has made the eco-environment fragile in the Loess Plateau. Based on the 10-year data observed from 1989 to 1998 in the Ziwuling Survey Station in loess hilly region, the eco-environment change and soil erosion process in reclaimed forestland were studied in this paper. The results showed that the intensity of man-made soil erosion caused by forestland reclamation was 1000 times more than that of the natural erosion. From the analysis of soil physical and mechanical properties, in the 10th year after forestland was reclaimed, the clay content and physical clay content decreased 2.74 percentage point and 3.01 percentage point respectively, the >0.25mm waterstable aggregate content decreased 31.59 percentage point, the soil bulk density increased and soil shear strength decreased, all of which were easier to cause soil erosion. The correlation analysis showed that >0.25mm waterstable aggregate content was the key factor affecting soil erosion, and the secondary factors were soil coarse grain and soil shear strength. The relation between the >0.25mm waterstable aggregate content, the soil sheer strength and the soil erosion intensity were analyzed, which showed that the first year and the seventh erosion year were the turn years of the soil erosion intensity after the forestland was reclaimed, revealed that the change of eco-environment was the main cause to accelerate soil erosion, and the worse environment caused soil erosion to be serious rapidly.

English Abstract

ECO-ENVIRONMENT CHANGE AND SOIL EROSION PROCESS IN THE RECLAIMED FORESTLAND OF THE LOESS PLATEAU

ZHA Xiao-chun¹,
TANG Ke-li²

1. College of Tourism and Environment Science, Shaanxi Normal University, Xi'an 710062, P. R. China;

2. Institute of Soil and Water Conservation, Chinese Academy of Sciences and Ministry of Water Resources, Yangling 712100, P. R. China

Received Date: 2002-10-24
Publish Date: 2003-09-20

Keywords:

Abstract: Serious soil erosion has made the eco-environment fragile in the Loess Plateau. Based on the 10-year data observed from 1989 to 1998 in the Ziwuling Survey Station in loess hilly region, the eco-environment change and soil erosion process in reclaimed forestland were studied in this paper. The results showed that the intensity of man-made soil erosion caused by forestland reclamation was 1000 times more than that of the natural erosion. From the analysis of soil physical and mechanical properties, in the 10th year after forestland was reclaimed, the clay content and physical clay content decreased 2.74 percentage point and 3.01 percentage point respectively, the >0.25mm waterstable aggregate content decreased 31.59 percentage point, the soil bulk density increased and soil shear strength decreased, all of which were easier to cause soil erosion. The correlation analysis showed that >0.25mm waterstable aggregate content was the key factor affecting soil erosion, and the secondary factors were soil coarse grain and soil shear strength. The relation between the >0.25mm waterstable aggregate content, the soil sheer strength and the soil erosion intensity were analyzed, which showed that the first year and the seventh erosion year were the turn years of the soil erosion intensity after the forestland was reclaimed, revealed that the change of eco-environment was the main cause to accelerate soil erosion, and the worse environment caused soil erosion to be serious rapidly.

ZHA Xiao-chun, TANG Ke-li. ECO-ENVIRONMENT CHANGE AND SOIL EROSION PROCESS IN THE RECLAIMED FORESTLAND OF THE LOESS PLATEAU[J]. 中国地理科学, 2003, 13(3): 232-237.

引用本文:

ZHA Xiao-chun, TANG Ke-li. ECO-ENVIRONMENT CHANGE AND SOIL EROSION PROCESS IN THE RECLAIMED FORESTLAND OF THE LOESS PLATEAU[J]. 中国地理科学, 2003, 13(3): 232-237.

ZHA Xiao-chun, TANG Ke-li. ECO-ENVIRONMENT CHANGE AND SOIL EROSION PROCESS IN THE RECLAIMED FORESTLAND OF THE LOESS PLATEAU[J]. Chinese Geographical Science, 2003, 13(3): 232-237.

Citation:

ZHA Xiao-chun, TANG Ke-li. ECO-ENVIRONMENT CHANGE AND SOIL EROSION PROCESS IN THE RECLAIMED FORESTLAND OF THE LOESS PLATEAU[J]. Chinese Geographical Science, 2003, 13(3): 232-237.

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ECO-ENVIRONMENT CHANGE AND SOIL EROSION PROCESS IN THE RECLAIMED FORESTLAND OF THE LOESS PLATEAU

作者简介: ZHA Xiao-chun(1972- ), male, a native of Nanzheng County of Shaanxi Province, master of science, specialized in soil erosion change and control. E-mail:xiaochzh@sina.com

ECO-ENVIRONMENT CHANGE AND SOIL EROSION PROCESS IN THE RECLAIMED FORESTLAND OF THE LOESS PLATEAU

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ECO-ENVIRONMENT CHANGE AND SOIL EROSION PROCESS IN THE RECLAIMED FORESTLAND OF THE LOESS PLATEAU

1. College of Tourism and Environment Science, Shaanxi Normal University, Xi'an 710062, P. R. China; 2. Institute of Soil and Water Conservation, Chinese Academy of Sciences and Ministry of Water Resources, Yangling 712100, P. R. China

作者简介: ZHA Xiao-chun(1972- ), male, a native of Nanzheng County of Shaanxi Province, master of science, specialized in soil erosion change and control. E-mail:xiaochzh@sina.com

English Abstract

ECO-ENVIRONMENT CHANGE AND SOIL EROSION PROCESS IN THE RECLAIMED FORESTLAND OF THE LOESS PLATEAU

1. College of Tourism and Environment Science, Shaanxi Normal University, Xi'an 710062, P. R. China; 2. Institute of Soil and Water Conservation, Chinese Academy of Sciences and Ministry of Water Resources, Yangling 712100, P. R. China

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作者简介:
ZHA Xiao-chun(1972- ), male, a native of Nanzheng County of Shaanxi Province, master of science, specialized in soil erosion change and control. E-mail:xiaochzh@sina.com

1. College of Tourism and Environment Science, Shaanxi Normal University, Xi'an 710062, P. R. China;

2. Institute of Soil and Water Conservation, Chinese Academy of Sciences and Ministry of Water Resources, Yangling 712100, P. R. China

作者简介:
ZHA Xiao-chun(1972- ), male, a native of Nanzheng County of Shaanxi Province, master of science, specialized in soil erosion change and control. E-mail:xiaochzh@sina.com

1. College of Tourism and Environment Science, Shaanxi Normal University, Xi'an 710062, P. R. China;

2. Institute of Soil and Water Conservation, Chinese Academy of Sciences and Ministry of Water Resources, Yangling 712100, P. R. China