Impact of soil conservation measures on soil properties in Sukhna Lake catchment
DOI:
https://doi.org/10.53550/Keywords:
Chemical soil properties, Impact of soil conservation measures, Physical, Siltation of Lake, Soil moistureAbstract
Sukhna, a recreational Lake of Chandigarh suffered from rapid siltation as its catchment at Shivalik hills are affected by severe soil erosion. Intensive soil conservation measures taken for three decades reduced silt loads but ameliorative effects in terms of soil properties were not evaluated. Comparing with an untreated comparable adjoining control watershed, the ameliorative impacts of 30 years of closure and intensive soil conservation measures were evaluated during 2008-09. The catchment was divided into 27 slopes and elevation based classes in 560 ha micro watershed. The enumeration of vegetation cover and soil analysis from each plot was carried out using standard methodology. The data on impact of soil properties is presented in this paper. The mean soil pH in treated area decreased from 8.19 to 7.72 but EC increased from 0.11 to 0.15 dsm . The overall soil organic carbon increased from 0.44 to 0.70%. The available phosphorus was 22.23kg ha in control against 32.56 kg ha in the surface soil of treated Sukhna Lake catchment. The status of available soil potassium was 116.63 kg ha in control against almost double i.e. 219.71 kg ha in the treated area. The leaf litter increased from2.04t ha yr to 4.49 t ha yr . The growth of Sorghum plants raised in pots filled with soil taken from plots of control and treated under conditions of no water stress was 15.1 and 19.3 cm and survival as 86.4 and 100% in one month. However, when water stress was applied in a separate set of pots, the plant growth was 8.0 and 11.2 cm and survival percentage as 43.2 and 70.8% in one month in control and treated pots. In case of control area, the soil moisture in 0-120 cm profile varied from 4.1 to 11.0% before rain and 5.0 to 11.4% after the monsoon rain. However, in case of treated area, the soil moisture varied from 5.6 to 13.6% before and from 6.5 to 15.0% after the monsoon rains. The soil profile of Sukhna Lake catchment stored 2.9 cm more water up to 0-120 cm depth as compared to the control area which over 2540 ha catchment area would mean 73.66 ha-m of additional water stored in the soil profile. Such an improvement in soil fertility and moisture regime was responsible for rejuvenation of the vegetation cover.
References
Bansal, R.C. and Grewal, S.S. 1990. Studies on Sedimentation of Sukhna Lake: Corrective Measures and Hydrology. Annual Report 1990. Central Soil and Water Conservation Research and Training Institute Research Centre, Chandigarh. pp. 1-6.
Bhumbla, D.R. 1976. Soil Conservation in Shivaliks. Indian Farm 25(12): 3&5.
Das, K., Deb, S. and Arunachalam, A. 2011. Effect of earthworm and plant residues on soil enrichment under agroforestry system of north-east India. Ind. J. Soil Cons 39(1): 73-79.
Dhar, S.K. 1994. Rehabilitation of degraded tropical forest watersheds with people's participation. AMBIO, 23(3): 216-221.
Grewal, S.S. and Juneja, M.L. 1984. Studies on the erosional behaviour of the soil in the catchment of a rapidly silting lake at Chandigarh. Soil Conserv ., 12(1): 58-65.
Grewal, S.S. and Abrol, I.P. 1986. Agroforestry on alkali soils: Effect of some management practices on initial growth, biomass accumulation and chemical composition of selected tree species. Agroforestry Systems 4: 222-232.
Grewal, S.S., Mittal S.P. and Singh, Gurmel. 1990. Rehabilitation of degraded lands in Himalayan Foot-Hills: People's participation. AMBIO, 19(1): 45 48.
Grewal, S.S., Juneja, M.L. Mittal, S.P., Agrihotri, Yand Bansal, R.C. 1990. Effect of some hydro physical soil properties on erosion, seepage and grass yield from a Shivalik watershed. Ind. J. Soil Cons., 18(1&2): 48-55.
Grewal, S.S. 1995. Hoshiarpur torrents, their extent, causes, characteristics and control measures. In: Sastry, G., Sharda, V.N., Guyal, G.P. and Samra, J.S. (eds.). Torrent Menace, Challenges and Opportunities. Publication of the Central Soil andWater Conservation Research and Training Institute Dehra Dun, India.
Jain,T.C., Grewal, S.S. and Dogra, A.S. 1998. Rehabilitation of degraded Shiwalik ecosystem through integrated watershed management. In Principles and Practices of Integrated Watershed Management in India, published by Indo-German Bilateral Project, NewDelhi.
Murthy, R.S. and Shankaranaryana, H.S. 1977. Utility of soil maps for watershed treatment in Shivaliks. J. Ind. Soc. Soil Sci., 25(3): 313-316.
Sharma, P., Sharma, H.C., Singh, P. and Prasad, R. 2013. Vermicompost and biofertilizers for improved tomato productivity and soil properties in degraded soils of lower Himalayas. Ind. J. Soil Cons.,41(3): 274-278.
Sohal, H.S. 2000. Soil and water conservation measures for sediment control in Sukhna Lake, Chandigarh. In: Mittal, S.P., Aggarwal, R.K. and Samra, J.S. (eds) 2000. Fifty Years of Research on Sustainable Resource Management in Shivaliks. Publication of the Central Soil and Water Conservation Research and Training Institute, Research Centre, Chandigarh 160018. India. pp. 259-266.
Tajeda, M., Gomez, I., Hernandez, T. and Garcia, C. 2010. Utilization of Vermicomposts in soil restoration; effects on soil biological properties. Soil Sci. Sco.Am. J.,74: 525-532.
Verma, Y.S., Murthy, R.C., Satyanarayana, K.V.S and Erasmus I.I. 1965. Ecology of soils of the Soil Conservation Research Station Chandigarh Punjab. Indian For., 91(6): 377-386.
