Light heterogeneity shapes contrasting ecological responses to photovoltaic arrays in Tibetan alpine grasslands - Lei Chen; Rui Weng; Wenhao Cong; Shuaihao Bai; Wenping Qin; Qiong Zhao; Saida Li; Yuhan Song; Jingxue Zhao; Lihua Tian (Journal of Environmental Management, 2026)