Integrated Use of GCM, RS, and GIS for the Assessment of Hillslope and Gully Erosion in the Mushi River Sub-Catchment, Northeast China
Integrated Use of GCM, RS, and GIS for the Assessment of Hillslope and Gully Erosion in the Mushi River Sub-Catchment, Northeast China
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综合利用 GCM、RS 和 GIS 评估东北牧石河流域山坡沟壑侵蚀
DOI：
10.3390/su8040317
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发表时间：
2016-03
期刊：
影响因子：
3.9
通讯作者：
Bu, Kun
中科院分区：
文献类型：
--
作者：
Yang, Chaobin;Yu, Lingxue;Chang, Liping;Bu, Kun
东北黑土区水土流失严重。侵蚀类型以坡面侵蚀和沟道侵蚀为主。利用遥感（RS）和地理信息系统（GIS）等技术对木石河流域坡面和沟道侵蚀进行综合评价，探讨坡面和沟道侵蚀的空间耦合关系。采用改进的通用土壤流失方程（RUSLE）模型和卫星影像解译方法，分别对坡面和沟道侵蚀进行了评价。结果表明：（1）研究区整体上以细沟和片蚀为主，但沟蚀较为严重，主要发生在耕地上;（2）GCM模型有助于提高土壤侵蚀评价的整体水平，但RUSLE模型可能高估了旱地的侵蚀速率;（3）阳坡坡面和沟道侵蚀强度大于阴坡，且主要发生在中海拔地区。当坡度大于15 °时，坡度不是限制侵蚀的主要因素，而在坡度较陡时，优势林地显著减少了土壤侵蚀量;（4）沟道侵蚀强度和沟道密度的变化趋势与土壤侵蚀强度的变化趋势不一致。据我们所知，这项研究是第一个试图整合沟蚀和山坡侵蚀的流域尺度。研究结果有助于更好地理解坡沟侵蚀的空间耦合关系，同时也表明GCM、RS和GIS可以有效地应用于东北黑土丘陵区的坡沟侵蚀评价。
The black soil region of Northeast China has suffered from severe soil erosion by water. Hillslope and gully erosion are the main erosion types. The objective of this research was to integrate the assessment of hillslope and gully erosion and explore spatial coupling relations between them in the Mushi River sub-catchment using geographical conditions monitoring (GCM) including remote sensing (RS) and geographic information system (GIS) techniques. The revised universal soil loss equation (RUSLE) model and visual satellite image interpretation were used to evaluate hillslope and gully erosion, respectively. The results showed that (1) the study area as a whole had slight erosion due to rill and sheet erosion, but suffered more serious gully erosion, which mainly occurs in cultivated land; (2) GCM contributed to the overall improvement of soil erosion assessment, but the RUSLE model likely overestimates the erosion rate in dry land; (3) the hillslope and gully erosion were stronger on sunny slopes than on shady slopes, and mainly occurred at middle elevations. When the slope was greater than 15 degrees, the slope was not the main factor restricting the erosion, while at steeper slopes, the dominant forest land significantly reduced the soil loss; (4) trends of gully erosion intensity and density were not consistent with the change in soil erosion intensity. To our knowledge, this study was one of the first that attempted to integrate gully erosion and hillslope erosion on a watershed scale. The findings of this study promote a better understanding of the spatial coupling relationships between hillslope and gully erosion and similarly indicate that GCM, RS, and GIS can be used efficiently in the hilly black soil region of Northeast China to assess hillslope and gully erosion.
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影响因子：
5.5
作者：
Yan Yechao
通讯作者：
Yan Yechao
DOI：
--
发表时间：
1978
期刊：
--
影响因子：
--
作者：
W. H. Wischmeier;D. Smith
通讯作者：
W. H. Wischmeier;D. Smith
影响因子：
6.4
作者：
Soyoung Park;C. Oh;S. Jeon;H. Jung;Chuluong Choi
通讯作者：
Soyoung Park;C. Oh;S. Jeon;H. Jung;Chuluong Choi
DOI：
--
发表时间：
1992
期刊：
--
影响因子：
--
作者：
L. R. Oldeman
通讯作者：
L. R. Oldeman
影响因子：
6.2
作者：
Hajer Bouchnak;Mennoubi Sfar Felfoul;M. R. Boussema;M. H. Snane
通讯作者：
Hajer Bouchnak;Mennoubi Sfar Felfoul;M. R. Boussema;M. H. Snane