Correlation of eco-hydrographic benefit and height increment of Robinia pseudoacacia stand with climatic environmental factors in Yellow River Delta Wetland of China

Abstract

The relationship between eco-hydrographic benefit of forest vegetation and climatic environmental factors is one of the focuses in the research on environmental protection and ecosystem countermeasures in Wetland. The runoff, sediment and soil moisture rate dynamics in Robinia pseudoacacia plantation and its clearcut area were investigated in the natural runoff experiment plots in Yellow River Delta Wetland, Shandong Province, China. The correlation of height increment of R. pseudoacacia with nine climate factors such as light, water, heat, etc. was analyzed by stepwise regression analysis. The results showed that the amounts of runoff and sediment in clearcut area of R. pseudoacacia were 53.9%–150.8% and 172.8%–387.1% higher than that in Robinia pseudoacacia plantation, respectively. The runoff peak value in R. pseudoacacia stand was obviously lower than that in clerarcut area, meantime, the occurrence of runoff peak in R. pseudoacacia stand was 25 min later than in its clerarcut area. The soil moisture rates in R. pseudoacacia stand and its clearcut varied periodically with annual rainfall precipitation in both dry season and humid season. The annual mean soil moisture rate in R. pseudoacacia stand was 23.3%–25.6% higher than that in its clearcut area. Meanwhile, a regression model reflecting the correlation between the height increment of R. pseudoacacia and climatic factors was developed by stepwise regression procedure method. It showed that the light was the most important factor for the height increment of R. pseudoacacia, followed by water and heat factors.

Keywords

Yellow River Delta wetland / Robinia pseudoacacia stand / Eco-hydrographic benefit / height increment / climatic factors

References

[1] Closset K.D., Schnitzler A., Aran D. Dynamics in natural mixed-beech forest of the Upper Vosges Biodiversity and Conservation, 2006, 15(3): 1063-1093.

[2] Fan A., Chen X., Li Z. Effects of intercropping systems of trees with soybean on soil physicochemical properties in juvenile plantations Journal of Forestry Research, 2006, 17(3): 226-230.

[3] Feldhake C.M. Microclimate of a natural pasture under planted Robinia pseudoacacia in central Appalachia, West Virginia Agroforestry Systems, 2001, 53(5): 297-303.

[4] Gi J.K., Bo A.L., Jong M.N., Jae G.K. The relationship of vegetation to environmental factors in Wangsuk stream and Gwarim reservoir in Korea: II. Soil environments Ecol Res., 2007, 22(6): 75-86.

[5] Han R., Hou Q. Soil water changing of artificial Robinia persudoscacia at different site conditions in Yan’an experimental area Journal of Northwest Forestry University, 2003, 18(1): 74-76.

[6] Hristo T., Alexander A. Growth of Robinia persudoscacia L. on areclaimedterrain in Bulgaria studied over a period of climatic anomalies ProQuest Agriculture Journals, 2005, 32(1): 1-5.

[7] Lu W. SPSS10.0 for windows statistics analysis, 2002 Beijing: Electron Industry Press 1-135.

[8] Chowdhury M.S.H., Halim M.A., Biswas S. Comparative evaluation of physical properties in soils of orange orchard and bushy forest in chittagong hill tracts, Banglandesh Journal of Forestry Research, 2007, 18(3): 245-248.

[9] Wang K., Wang B. Study on thinning to Robina pseudoacacia forest on the Loess Plateau Chinese Journal of Applied Ecology, 2002, 13(1): 11-15.

[10] Wang W. The application of Excel in statistics, 2003 Beijing: Chinese Railway Press 1-67.

[11] Wang Y., Wang Z. Study on the Runoff Generation Process on hillside fields on the Loess Plateau Journal of Soil and Water Conservation, 1991, 2(2): 35-40.

[12] Wang Y., Liu B. Ecological characteristics of Shelter Forest on the Loess Plateau, 1994 Beijing: Chinese Forestry Publishing House 105-132.

[13] Yu D., Gu h., Wang J. Relationships of climate change and tree ring of Betula ermanii tree line forest in Changbai Mountain Journal of Forestry Research, 2005, 16(3): 187-192.

[14] Zhang J., Zhang B., Bi H. Soil erosion resistance of different land types in Loess Plateau area Journal of Beijing Forestry University, 2002, 26(6): 25-29.

[15] Zhang S., Wang G. Soil hydro-physical properties of Robinia pseudoacacia plantation forestland in Loess Plateau Journal of Northwest Forestry University, 2004, 19(3): 11-14.