三峡库区重庆段水土流失的时空格局特征

doi:10.11821/xb200805006

Abstract

Abstract:

The soil and water loss (SWL) has been the most serious eco-environmental problem in the Three Gorges Reservoir area of Chongqing. In this paper the authors analyze the spatiotemporal features of SWL from 1999 to 2004 based on RS and GIS. The results are shown in the following aspects. (1) The SWL area in the Three Gorges Reservoir area presents a decreasing trend from 1999 to 2004, and the intensity of acute and extremely intense SWL reduces evidently. (2) The SWL mainly exists in purple soil, yellow soil, limestone soil, paddy soil and yellow brown soil distributed areas. The moderate (quite obvious SWL), intense (relatively high SWL), extremely intense (relatively obvious SWL) and acute SWL (high SWL) are mainly distribuited in purple soil and yellow soil areas. (3) The dry slope land and sparse woodland that are influenced intensively by human activities are hit by most serious SWL. The total SWL area exceeds 70%. About 90% of the high intense SWL happens on the dry slope land. (4) The SWL in the study area shows an obvious vertical differentiation characteristic. The SWL mainly occurs in the low mountain and hilly regions with an elevation of 200-1500 m, being more than 90% of the total area. The SWL types are mainly intense and extremely intense. There is almost no SWL in the regions of river valleys and terraces where the elevation is lower than 200 m, or in regions where the elevation is higher than 1500 m with high vegetation coverage . (5) SWL is well correlated with slope. About 70% of SWL happens on the steep slope greater than 15^o and high intense SWL does as well, especially, above extremely intense SWL occupies over 80%. (6) There is no obvious correlation between SWL and aspect. The affected areas and intensity are similar in different aspects. (7) The SWL concentrates mainly in the regions where the values of R are between 300 and 340. The area of SWL in the regions where the values of R are from 340 to 357 is small, but the extremely intense SWL is relatively well correlated with the high R values.

Key words: soil and water loss, Chongqing, Three Gorges Reservoir area

LI Yuechen, LIU Chunxia, ZHAO Chunyong, HUANG Jianhui. Spatiotemporal Features of Soil and Water Loss in the Three Gorges Reservoir Areaof Chongqing[J].Acta Geographica Sinica, 2008, 63(5): 502-513.

References

[1] Gu Shengzu, Hou Weili. Countermeasure of water and soil erosion in upper reaches of Changjiang River. Resources and Environment in the Yangtze Basin, 2000, 9(2): 260-264.
[辜胜阻, 侯伟丽. 治理长江上游水土流失的对策. 长江流域资源与环境, 2000, 9(2): 260-264.]

[2] Zhou Tinggang, Zhang Qiliang. Factors contributing to soil erosion in upper reaches of the Changjiang River. Resources and Environment in the Yangtze Basin, 2004, 13(1): 89-93.
[周廷刚, 张其良. 长江上游水土流失成因及治理模式研究. 长江流域资源与环境, 2004, 13(1): 89-93.]

[3] Wu Jianguo, Huang Jianhui, Han Xingguo et al. Three-Gorges dam-experiment in habitat fragmentation? Science, 2003, 300: 1239-1240.

[4] Zhang Sheng, Zhu Cheng. Soil loss and its effect on flooding catastrophe in Yangtze drainage basin. Journal of Soil and Water Conservation, 2001, 15(6): 9-13.
[张生, 朱诚. 长江流域水土流失及其对洪灾的影响. 水土保持学报, 2001, 15 (6): 9-13.]

[5] Zhan Xiaoguo, Tan Debao. Research on rapid and dynamical supervision on water and soil erosion in Three Gorges Reservoir area based on RS and GIS. Journal of Yangtze River Scientific Research Institute, 2003, 20(1): 44-46.
[詹小国, 谭德宝. 基于RS 和GIS 的三峡库区水土流失快速动态监测研究, 长江科学院院报, 2003, 20(1): 44-46.]

[6] Liao Xiaoyong, Chen Zhijian, Liu Shaoquan et al. Study on soil losses in different land use types of purple slope cropland in the Three Gorges Reservoir area. Journal of Soil and Water Conservation, 2005, 12(1): 159-161.
[ 廖小勇, 陈治谏, 刘邵权等. 三峡库区紫色土破耕地不同利用方式的水土流失特征. 水土保持学报, 2005, 12(1): 159-161.]

[7] Fu Tao, Ni Jiupai, Wei Chaofu et al. Research on nutrient loss from Terra Gialla soil in Three Gorges region under different rainfall intensity. Journal of Soil and Water Conservation, 2002, 16(2): 33-35.
[傅涛, 倪九派, 魏朝富等. 雨强对三峡库区黄色石灰土养分流失的影响. 水土保持学报, 2002, 16(2): 33-35.]

[8] Li Hongwei, Peng Buzhuo. Traits of soil and water loss, environmental harmfulness and countermeasures in the forthcoming Three-Gorge Reservoir area. Resources and Environment in the Yangtze Basin, 1993, 2(4): 331-339.
[李红卫, 彭补拙. 三峡库区水土流失特定及其环境危害防治措施探讨. 长江流域资源与环境, 1993, 2(4): 331-339.]

[9] Du Zuohua, Yan Guoan. Soil and water conservation and improving ecological environment in the Three-Gorge Reservoir area. Resources and Environment in the Yangtze Basin, 1999, 8(3): 299-304.
[杜佐华, 严国安. 三峡库区水土保持与生态环境改善. 长江流域资源与环境, 1999, 8(3): 299-304.]

[10] He Chunyang, Shi Peijun, Chen Jin et al. A study on land use/cover change in Beijing area. Geographical Research, 2001, 20(6): 679-687.
[ 何春阳, 史培军, 陈晋等. 北京地区土地利用/ 覆盖变化研究. 地理研究, 2001, 20(6): 679-687.]

[11] Li Yuechen, Liu Chunxia. Land use/cover dynamic changes in the northern China. Scientia Geographica Sinica, 2007, 27(1): 45-52.
[李月臣, 刘春霞. 北方13 省土地利用/ 覆盖动态变化分析. 地理科学, 2007, 27(1): 45-52.]

[12] Shi Deming, Shi Xuezheng, Liang Yin et al. The problems of soil and water loss and conservation in subtropics of China. Subtropical Soil and Water Conservation, 2005, 17(3): 1-5.
[史德明, 史学正, 梁音等. 我国亚热带的水土流失与水土保持问题. 亚热带水土保持, 2005, 17(3): 1-5.]

[13] Zhou Fujian, Chen Minghua. The rainfall erosivity index in Fujian province. Journal of Soil and Water Conservation, 1995, 9(1): 13-18.
[周伏建, 陈明华. 福建省降雨侵蚀力指标R 值. 水土保持学报, 1995, 9(1): 13-18.]

[14] http://www.cqates.com/newstxt/ 重庆市耕地资源分等定级土种等级结果体系(旱作土).doc.

[15] Ni Jinren, Li Yingkui. Dynamic assessment of soil erosion based on land-use structure change. Acta Geographica Sinica, 2001, 56(5): 611-621.
[倪晋仁, 李英奎. 基于土地利用结构变化的水土流失动态评估. 地理学报, 2001, 56 (5): 611-621.]

[16] Fu Bojie, Qiu Yang, Wang Jun et al. Effect simulations of land use change on the runoff and erosion for a gully catchment of the Loess Plateau, China. Acta Geographica Sinica, 2002, 57(6): 717-722.
[傅伯杰, 邱扬, 王军等. 黄土丘陵小流域土地利用变化对水土流失的影响. 地理学报, 2002, 57(6): 717-722.]

[17] Rai S C, Sharma E. Comparative assessment of runoff characteristics under different land use patterns within a Himalayan watershed. Hydrological Processes, 1998, 12: 2235-2248.

[18] Swanson F J, Kratze T K, Caine N. Landform effects on ecosystem patterns and processes. Bioscience, 1988, 38:92-98.

[19] Wear D N, Bolstad P. Land-use changes in southern Appalachian landscapes. Ecosystems, 1998, 1(6): 575-594.

[20] Shen Zehao, Zhang Quanfa, Yue Chao et al. The spatial pattern of land use/land cover in the water supplying area of the middle-route of the South-to-North Water Diversion (MR-SNWD) Project. Acta Geographica Sinica, 2006, 61(6): 633-644.
[沈泽昊, 张全发, 岳超等. 南水北调中线水源区土地利用/ 土地覆被的空间格局. 地理学报, 2006, 61(6): 633-644.]

[21] Shi Minjun, Wang Tao. An application of bio-economic household model to analysis on man-land relationship behavior in ecologically fragile land of China. Acta Geographica Sinica, 2005, 60(1): 165-174.
[石敏俊, 王涛. 中国生态脆弱带人地关系行为机制模型及应用. 地理学报, 2005, 60(1): 165-174.]

Spatiotemporal Features of Soil and Water Loss in the Three Gorges Reservoir Areaof Chongqing

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