{'fraction_non_alphanumeric': 0.013146362839614373, 'fraction_numerical': 0.013146362839614373, 'mean_word_length': 4.738693467336684, 'pattern_counts': {'":': 0, '<': 0, '<?xml version=': 0, '>': 0, 'https://': 0, 'lorem ipsum': 0, 'www.': 0, 'xml': 0}, 'pii_count': 0, 'substrings_counts': 0, 'word_list_counts': {'cursed_substrings.json': 0, 'profanity_word_list.json': 0, 'sexual_word_list.json': 0, 'zh_pornsignals.json': 0}}
Estimation of methane emission from a North-Indian subtropical wetland

Methane emission from wetlands and its upscaling is a frontier area of research in global biogeochemical cycling including global warming. Though process based models are needed to account for variability in various types of wetland ecosystems, due to lack of required field data, it is till in infancy especially in the tropical countries. An attempt has been made through this study to estimate the quantitative and temporal variation of 4 CH emission from a subtropical wetland of North India dominated by Scirpus littoralis. A wide variation in rate of 4 CH emission was observed in an annual cycle with maximum rate reaching up to 129.82± 19.08 mg m -2 h -1 during March to April and negative emission rates were observed in hot and dry summer months between May to July. This finding suggests that tropical wetlands act both as source and sink of 4 CH emission depending upon the specific ecological and environmental conditions. Therefore, extrapolation of single value of rate of emission for the entire year is not correct in estimating total annual 4 CH flux.