[1]ZHANG Tianyu,HAO Yanfang.Spatial Distribution of Sloping Croplands in Northeast China and Its Implication on Soil and Water Conservation[J].Research of Soil and Water Conservation,2018,25(02):190-194.
Copy
Spatial Distribution of Sloping Croplands in Northeast China and Its Implication on Soil and Water Conservation
Research of Soil and Water Conservation[ISSN 1005-3409/CN 61-1272/P] Volume:
25
Number of periods:
2018 02
Page number:
190-194
Column:
Public date:
2018-04-03
- Title:
- Spatial Distribution of Sloping Croplands in Northeast China and Its Implication on Soil and Water Conservation
- CLC:
- S157
- DOI:
- -
- Abstract:
- Soil erosion is causing damage to the sloping croplands of northeast China and threatening the food security of China. However, little is known about them at macro scale. This study aims to investigate the area and slope gradient in different geomorphologic regions, soil types, watersheds and administrative divisions of the northeast region in order to guide the implementation of conservation management practices. The results indicate that:(1) sloping cropland of northeast China is characterized by large area with gentle slope gradients, the total area is about 195 000 km2, with a mean slope of 3.4 degrees, the total area is about 195 000 km2, with a mean slope of 3.4 degrees, the total area of sloping cropland of northeast China is about 14% of the total cropland area of China; therefore, management of these sloping croplands is important; (2) contour farming is suitable to most of the sloping croplands; Therefore, technologies, conservation practices and management systems related to sloping cropland deserve more attention; sloping croplands steeper than 15 degree, those located in the aeolian sandy soil, and some other soil types contribute little to grain production and exhibit a high erosion hazard, therefore, these croplands should be reused for the other purposes; the Changbaishan mountainous region and the dark-brown earth region are the key regions and difficult regions of management, and more attention should be paid to these regions; (3) the work load and difficulty of conservation management vary widely among counties, therefore, each county should be dealt with on its individual merits and not by the macroscale management decisions across counties, the load and difficulty of the management work of each county should not be evaluated by land area and cropland area.
- References:
-
[1] Williams J R, Allmaras R R, Renard K G, et al. Soil erosion effects on soil productivity:a research perspective[J]. Journal of Soil and Water Conservation, 1981,36(2):82-90.
[2] Lal R, Moldenhauer W C. Effects of soil erosion on crop productivity[J]. Critical Reviews in Plant Sciences, 2008,5(4):303-367.
[3] 刘兴土,阎百兴.东北黑土区水土流失与粮食安全[J].中国水土保持,2009(1):17-19.
[4] 王志强,刘宝元,王旭艳,等.东北黑土区土壤侵蚀对土地生产力影响试验研究[J].中国科学:D辑地球科学,2009,39(10):1397-1412.
[5] Fang H, Sun L, Qi D, et al. Using 137 Cs technique to quantify soil erosion and deposition rates in an agricultural catchment in the black soil region, Northeast China[J]. Geomorphology, 2012,169/170:142-150.
[6] 刘育成.中国土地资源调查数据集[M].北京:全国土地资源调查办公室,2000.
[7] 水利部.第一次全国水利普查水土保持情况公报[R].北京:水利部,2013.
[8] 刘宝元,刘瑛娜,张科利,等.中国水土保持措施分类[J].水土保持学报,2013,27(2):80-84.
[9] Chen J, Chen J, Liao A, et al. Global land cover mapping at 30 m resolution:A POK-based operational approach[J]. Isprs Journal of Photogrammetry and Remote Sensing, 2014,103:7-27.
[10] Yu L, Wang J, Clinton N, et al. FROM-GC:30 m global cropland extent derived through multisource data integration[J]. International Journal of Digital Earth, 2013,6(6):521-533.
[11] 中华人民共和国地貌图集编委会.中华人民共和国地貌图集[M].北京:科学出版社,2009.
[12] 高燕,张延玲,何小雷.东北黑土区耕地分布解译的遥感数据源对比[J].中国水土保持,2016(7):61-65.
[13] 中国农业年鉴编辑委员会.中国农业年鉴2015[M].北京:中国农业出版社,2016.
[14] 陈雪,蔡强国,王学强.典型黑土区坡耕地水土保持措施适宜性分析[J].中国水土保持科学,2008,6(5):44-49.
[15] 和继军,蔡强国,王学强.北方土石山区坡耕地水土保持措施的空间有效配置[J].地理研究,2010,29(6):1017-1026.
[16] 郭乾坤,刘宝元,朱少波,等.中国主要水土保持耕作措施因子[J].中国水土保持,2013(10):22-26.
- Similar References:
Memo
-
Last Update:
1900-01-01